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Free Website & Network Tools

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Domain Availability Checker

SSL Certificate Checker

DNS Lookup

Domain Age Checker

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SSL Tools 3 DNS Tools 13 Domain Tools 12 Website Tools 23 Security Tools 14 Email Tools 9 Performance Tools 12 SEO Tools 14 API & Developer Testing Tools 15 Git & GitHub Tools 18 DevOps Tools 16 Linux & System Administration Tools 17 Database & SQL Tools 20 AWS & Cloud Tools 16 Kubernetes Tools 14 Programming Language Tools 22 Frontend / CSS Tools 20 Image / SVG Developer Tools 18 Security & Authentication Tools 14 File & Data Conversion Tools 20 Data / Number / Computer Science Tools 20

Website Tools

Run All Checks

Check the live status, HTTP headers, and technical health of any website.

Website Status Checker

Instantly check any website's uptime status, HTTP status code, and response time...

IP Address Lookup

Look up a website's server IP address, IPv4/IPv6, and reverse DNS.

HTTP Status Checker

Check the HTTP status code any website returns.

HTTP Headers Checker

View every HTTP response header a website sends.

Redirect Checker

Check whether a website redirects and where it ends up.

Website Response Time Checker

Check how fast a website responds to a request.

Robots.txt Checker

Check whether a website has a robots.txt file and view its contents.

Sitemap Checker

Check whether a website has an XML sitemap.

Favicon Checker

Check whether a website has a favicon set up correctly and see exactly where it'...

Website Technology Checker

Detect the CMS, JavaScript framework, analytics tools, and server technology a w...

HTML Validator

Check a webpage's HTML for structural errors, missing tags, and accessibility is...

CSS Validator

Check a webpage's CSS (inline and linked stylesheets) for common syntax issues.

JSON Formatter

Instantly format and pretty-print any JSON, right in your browser.

JSON Validator

Instantly check whether your JSON is valid, right in your browser.

JSON Minifier

Instantly minify JSON by removing whitespace, right in your browser.

URL Encoder / Decoder

Instantly encode or decode URLs and query strings, right in your browser.

Base64 Encoder / Decoder

Instantly encode or decode Base64 text, right in your browser.

Unix Timestamp Converter

Instantly convert Unix timestamps to human-readable dates, and back, right in yo...

Broken Link Checker

Check a page for broken outbound links.

Website Charset Checker

Check a website's declared character encoding (charset) - HTTP header and HTML m...

HTML Minifier

Instantly minify HTML by removing unnecessary whitespace and comments, right in...

JavaScript Minifier

Instantly compact JavaScript by removing unnecessary whitespace, right in your b...

URL Parser

Instantly break a URL down into its protocol, host, path, query parameters, and...

API & Developer Testing Tools

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Build, test, and debug HTTP/API requests - request builders, cURL tools, JSON/OpenAPI utilities, and reference lookups.

API Request Builder

Build an HTTP/API request visually - method, URL, query parameters, headers, and...

REST API Tester

Send a real HTTP request to any API endpoint from your browser and see the live...

HTTP Request Builder

Construct an HTTP request - method, headers, query parameters, and body - and ge...

cURL Generator

Generate a valid, copyable cURL command from a method, URL, query parameters, he...

cURL to Code Converter

Paste a cURL command and convert it into JavaScript fetch, Axios, Python request...

API Response Formatter

Paste a raw API response and format or minify it - built specifically for inspec...

JSONPath Tester

Enter JSON data and a JSONPath expression to see the matching values, with clear...

JSON Pointer Tester

Test a JSON Pointer (RFC 6901) against your JSON data and see the exact selected...

HTTP Status Code Lookup

Look up any HTTP status code and get an accurate description of what it means, o...

User-Agent Parser

Paste a User-Agent string and extract the browser, browser version, operating sy...

Webhook Tester

Generate a temporary, unique webhook URL and inspect every incoming request sent...

OpenAPI / Swagger Validator

Paste an OpenAPI 3.x document in JSON or YAML and check it against the common re...

OpenAPI to JSON Converter

Paste an OpenAPI document in YAML (or JSON) and get it converted to clean, forma...

OpenAPI to YAML Converter

Paste an OpenAPI document in JSON (or YAML) and get it converted to clean, forma...

API Mock Response Generator

Define a simple response shape and generate a realistic mock JSON response - use...

Git & GitHub Tools

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Generate Git commands, branch names, commit messages, .gitignore files, GitHub Actions workflows, changelogs, and README files.

Git Command Generator

Pick a common Git task - clone, commit, branch, merge, rebase, and more - and ge...

Git Command Builder

A flexible builder for constructing Git commands from a subcommand, flags, and a...

Git Branch Name Generator

Turn a short task description into a clean, conventional Git branch name.

Git Commit Message Generator

Generate a Conventional Commits-style message from a change type, optional scope...

.gitignore Generator

Generate a .gitignore file for your stack - Laravel, Node.js, React, Python, and...

Gitignore Checker

Test whether a specific file or folder path would be ignored by your .gitignore...

Git Diff Viewer

Paste two versions of a text and see a clear, color-coded line-by-line compariso...

Git Merge Conflict Helper

Paste a merge conflict block and clearly see the current (HEAD) side vs. the inc...

Git URL Parser

Parse a Git repository URL (HTTPS or SSH) and extract the host, owner, and repos...

GitHub URL Parser

Parse a GitHub URL and identify the owner, repository, branch, file path, issue,...

GitHub Repository URL Generator

Build common GitHub URLs - repository, branch, file, issue, or pull request - fr...

GitHub Actions YAML Generator

Generate a starting GitHub Actions workflow YAML for common scenarios like Node....

GitHub Actions Validator

Paste a GitHub Actions workflow YAML and check it for common structural problems...

GitHub Actions Cron Helper

Build and understand the cron schedule expression used by GitHub Actions' schedu...

Git Tag Generator

Generate a clean Git tag name for a release, in v1.0.0, 1.0.0, or release-1.0.0...

Semantic Version Generator

Assemble a valid SemVer version from major, minor, patch, prerelease, and build...

Changelog Generator

Turn a list of changes into a structured, Markdown-formatted CHANGELOG entry.

README Generator

Generate a clean, well-structured Markdown README from your project's basic info...

DevOps Tools

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Generate and validate Dockerfiles, Docker Compose files, CI/CD pipelines, Terraform, Ansible, and CloudFormation configuration.

Dockerfile Generator

Generate a clean Dockerfile from a base image, working directory, dependencies,...

Docker Compose Generator

Generate a docker-compose.yml with an application service plus optional database...

Docker Compose Validator

Paste a docker-compose.yml and check it for common structural problems before ru...

Docker Run to Docker Compose Converter

Paste a docker run command and convert its supported flags into a docker-compose...

Docker Command Generator

Pick a common Docker operation - pull, run, build, logs, exec, and more - and ge...

.dockerignore Generator

Generate a .dockerignore file for your stack to keep unnecessary files out of yo...

Docker Compose Environment Validator

Paste your Docker Compose environment variables and check for missing values, du...

GitLab CI Generator

Generate a .gitlab-ci.yml for common build, test, and deploy pipelines.

Jenkinsfile Generator

Generate a declarative Jenkinsfile with build, test, and deploy stages for commo...

CI/CD Pipeline Generator

Define generic pipeline stages - checkout, build, test, deploy - and export them...

Terraform Formatter

Paste Terraform/HCL code and get it cleanly indented and consistently formatted.

Terraform Configuration Generator

Generate a starting Terraform configuration - provider, resource, variables, and...

Ansible Playbook Generator

Generate a YAML Ansible playbook for common tasks like package installation, ser...

Ansible Inventory Generator

Generate an Ansible inventory file in INI or YAML format with groups, hosts, and...

CloudFormation Template Generator

Generate a basic AWS CloudFormation template (YAML or JSON) for a common resourc...

Infrastructure Config Generator

Define an application's environment, services, ports, domains, and deployment st...

Linux & System Administration Tools

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Calculate file permissions and generate common Linux, Nginx, Apache, SSH, and cron configuration and commands.

chmod Calculator

Convert between numeric (755) and symbolic (rwxr-xr-x) Linux file permissions in...

Chown Command Generator

Generate a safe chown command from an owner, group, and file path - with an opti...

Linux Command Generator

Pick a common Linux task - files, permissions, processes, networking, disk usage...

Linux Command Cheat Sheet

A searchable reference of common Linux commands, organized by category, each wit...

Cron Expression Builder

Build a standard 5-field cron expression from a friendly schedule picker, with a...

Crontab Generator

Build one or more complete crontab entries - schedule, command, and comments - r...

systemd Service Generator

Generate a systemd .service unit file with description, working directory, exec...

Nginx Config Generator

Generate an Nginx server block for a static site, PHP/Laravel app, or reverse pr...

Apache .htaccess Generator

Generate common Apache .htaccess rules - HTTPS redirect, www/non-www redirect, c...

Nginx Redirect Generator

Generate Nginx redirect rules - 301/302, HTTP to HTTPS, www to non-www, or old p...

Nginx Reverse Proxy Generator

Generate an Nginx reverse proxy configuration with backend host/port, proxy head...

SSH Command Generator

Generate SSH connection commands - custom port, identity file, jump host, or por...

SSH Config Generator

Generate an SSH client config block (~/.ssh/config) with Host alias, HostName, U...

SCP Command Generator

Generate an scp command for copying files to or from a remote server, with recur...

Rsync Command Generator

Generate rsync commands for local or remote synchronization, with archive mode,...

Linux Path Converter

Normalize a Linux path - resolve . and .. segments, collapse repeated slashes, a...

Environment Variable Formatter

Clean up and normalize a list of KEY=value environment variable definitions - ha...

Database & SQL Tools

Run All Checks

Format, validate, and generate SQL queries and schema - plus MongoDB, Redis, and database data type references.

SQL Query Formatter

Format messy SQL into clean, readable, properly indented SQL - SELECT, INSERT, U...

SQL Query Validator

Check SQL syntax for common structural errors - unbalanced parentheses/quotes, a...

SQL Minifier

Minify SQL by removing unnecessary whitespace and comments, while preserving exa...

SQL to JSON Converter

Convert SQL INSERT statements or a simple result-set-style table into a JSON arr...

JSON to SQL Converter

Convert a JSON array of objects into SQL INSERT statements, with an optional CRE...

CSV to SQL Converter

Convert CSV data into SQL INSERT statements, with the first row used as column n...

SQL INSERT Generator

Generate a SQL INSERT statement from a table name, columns, and one or more rows...

SQL UPDATE Generator

Generate a SQL UPDATE statement from a table, columns to set, and a WHERE condit...

SQL DELETE Generator

Generate a SQL DELETE statement with a required WHERE condition and a clear warn...

SQL Table Generator

Visually define columns, types, and constraints, then generate a CREATE TABLE st...

SQL WHERE Builder

Visually build a SQL WHERE clause with common operators and AND/OR grouping - co...

SQL JOIN Builder

Visually build an INNER, LEFT, RIGHT, FULL OUTER, or CROSS JOIN between two tabl...

SQL Query Generator

Build a complete SELECT statement visually - table, columns, WHERE, JOIN, GROUP...

Database Schema Designer

Visually design a multi-table database schema - tables, columns, primary keys, a...

MySQL Data Type Reference

A searchable reference of MySQL data types - numeric, string, date/time, JSON, a...

PostgreSQL Data Type Reference

A searchable reference of PostgreSQL data types - numeric, character, date/time,...

SQL Server Data Type Reference

A searchable reference of SQL Server data types - numeric, character, date/time,...

MongoDB Query Formatter

Format a MongoDB query/filter document into clean, readable, properly indented J...

MongoDB Query Generator

Generate common MongoDB operations - find, insertOne/Many, updateOne/Many, delet...

Redis Command Builder

Generate common Redis commands - GET, SET, DEL, EXPIRE, INCR, hash, list, and se...

AWS & Cloud Tools

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Parse and generate AWS ARNs, IAM/S3 policies, and CLI commands - plus region, cost, instance, and resource-naming reference tools.

AWS ARN Parser

Parse an AWS ARN and break it down into partition, service, region, account ID,...

AWS ARN Generator

Build a valid AWS ARN from a service, region, account ID, and resource identifie...

AWS Region Lookup

Look up AWS region codes, names, and locations - search by code or name.

AWS Availability Zone Lookup

Look up how many Availability Zones a given AWS region has, and understand the d...

AWS S3 URL Generator

Generate common S3 object and bucket URL formats - virtual-hosted style, path st...

S3 Policy Generator

Generate an S3 bucket policy JSON document with selectable actions, resources, a...

AWS IAM Policy Generator

Generate an IAM policy JSON document with selectable Effect, Actions, Resources,...

IAM Policy JSON Validator

Paste IAM or S3 bucket policy JSON and check its structure - required fields, va...

AWS Cron Expression Helper

Build and explain AWS EventBridge/CloudWatch-style cron expressions, which use a...

AWS CLI Command Generator

Generate common AWS CLI commands for EC2, S3, Lambda, and IAM - text only, never...

AWS CLI S3 Command Generator

Generate AWS CLI S3 commands - cp, sync, rm, mb, and presigned URLs - text only,...

Cloud Cost Calculator

Estimate monthly cloud infrastructure costs from your own hourly/monthly rate in...

AWS Instance Comparison

Compare common EC2 instance types side by side - vCPU, memory, and architecture...

AWS Region Time Converter

Convert a time between your local timezone and the typical timezone of an AWS re...

Cloud Resource Naming Generator

Generate consistent, convention-following names for cloud and infrastructure res...

Cloud Tag Generator

Generate a consistent set of resource tags (key-value metadata) for cloud resour...

Kubernetes Tools

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Generate and validate Kubernetes manifests - Deployments, Services, ConfigMaps, Secrets, Ingress, CronJobs, and more.

Kubernetes YAML Generator

Pick a Kubernetes resource kind and get a basic, correctly-structured YAML skele...

Kubernetes Deployment Generator

Generate a Kubernetes Deployment manifest with configurable replicas, container...

Kubernetes Service Generator

Generate a Kubernetes Service manifest - ClusterIP, NodePort, or LoadBalancer -...

Kubernetes ConfigMap Generator

Generate a Kubernetes ConfigMap manifest from key-value configuration data.

Kubernetes Secret YAML Generator

Generate a Kubernetes Secret manifest with base64-encoded values - entirely in y...

Kubernetes Ingress Generator

Generate a Kubernetes Ingress manifest with host, path rules, and optional TLS c...

Kubernetes Namespace Generator

Generate a Kubernetes Namespace manifest with optional labels.

Kubernetes Pod Generator

Generate a standalone Kubernetes Pod manifest with container image, ports, and e...

Kubernetes CronJob Generator

Generate a Kubernetes CronJob manifest with a standard cron schedule and contain...

Kubernetes Resource Calculator

Calculate total CPU and memory requests/limits across multiple containers or rep...

Kubernetes Labels Generator

Generate valid Kubernetes labels following recommended naming conventions, with...

Kubernetes Selector Builder

Build a Kubernetes label selector and see which of your sample labels it would m...

Kubernetes Manifest Formatter

Paste a Kubernetes YAML manifest and get it cleanly re-formatted with consistent...

Kubernetes Manifest Validator

Paste a Kubernetes manifest and check its YAML syntax plus basic required struct...

Programming Language Tools

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Format, convert, and inspect JavaScript, PHP, and Python code - plus generic code utilities and JSON-to-code converters.

JavaScript Formatter

Format and beautify JavaScript with consistent indentation, entirely in your bro...

JS Escape/Unescape

Escape a string for safe use inside JavaScript source, or unescape an already-es...

JS Object Viewer

Paste a JavaScript object literal or JSON and view it as an interactive, collaps...

JS Regex Tester

Test a JavaScript regular expression against sample text and see matches, groups...

PHP Formatter

Format and beautify PHP code with consistent indentation, entirely in your brows...

PHP Array to JSON

Convert a PHP array literal into valid JSON.

JSON to PHP Array

Convert JSON into an equivalent PHP array literal, ready to paste directly into...

PHP var_dump Formatter

Paste raw PHP var_dump() output and get it displayed in a clean, readable, inden...

PHP Serialized Data Decoder

Safely decode PHP's serialize() string format into readable structured data - ne...

Python Formatter

Format and re-indent Python source code consistently, entirely in your browser.

Python JSON Formatter

Format JSON or Python dict-literal syntax (single quotes, True/False/None) into...

Python Requirements Generator

Build a requirements.txt file from package names and version constraints.

Python Package Name Checker

Check whether a name follows valid PyPI package-naming syntax rules - this check...

Code Indentation Tool

Re-indent code using a configurable number of spaces or tabs.

Code Line Counter

Count total, blank, non-blank, and comment lines in any pasted code.

Code Comment Remover

Strip common single-line and block comments from code in several languages - pat...

Code Beautifier

A multi-language code beautifier - choose JavaScript, PHP, Python, JSON, or SQL...

Code Minifier

A multi-language code minifier - choose JavaScript, CSS, HTML, or JSON and get c...

Code to JSON

Convert a loosely-formatted object/array literal (unquoted keys, single quotes,...

JSON to TypeScript

Generate a TypeScript interface from JSON, inferring property types automaticall...

JSON to Python

Convert JSON into an equivalent Python dict/list literal, ready to paste directl...

JSON to JavaScript

Convert JSON into a JavaScript object/array literal, ready to paste directly int...

Frontend / CSS Tools

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Generate CSS gradients, shadows, flexbox/grid layouts, animations, and color palettes - plus unit converters and a specificity calculator.

CSS Gradient Generator

Build linear or radial CSS gradients visually with multiple color stops and a li...

CSS Box Shadow Generator

Build a CSS box-shadow visually - offset, blur, spread, color, and inset - with...

CSS Border Radius Generator

Set each corner's border radius individually with a live preview, and get clean...

CSS Button Generator

Design a button visually - background, text, border, radius, padding, and hover...

CSS Flexbox Generator

Build a flexbox layout visually - container and item properties both controllabl...

CSS Grid Generator

Build a CSS Grid layout visually - columns, rows, gaps, and item placement - wit...

CSS Transform Generator

Build a CSS transform visually - translate, rotate, scale, and skew - with a liv...

CSS Animation Generator

Build a CSS @keyframes animation visually and get the full animation declaration...

CSS Clip Path Generator

Build a CSS clip-path shape visually - common practical shapes with editable poi...

CSS Filter Generator

Combine CSS filter functions visually - blur, brightness, contrast, grayscale, a...

CSS Text Shadow Generator

Build a CSS text-shadow visually - offset, blur, and color - with a live preview...

CSS Triangle Generator

Build a pure-CSS triangle using the border trick - direction, size, and color -...

CSS Glassmorphism Generator

Generate a frosted-glass CSS card style - background blur, transparency, and bor...

CSS Neumorphism Generator

Generate a soft-UI neumorphism CSS style - dual light/dark shadows on a matching...

CSS Color Palette Generator

Generate a harmonious color palette from one base color - complementary, analogo...

CSS Unit Converter

Convert between CSS units - px, rem, em, pt, vw, vh, and percent - with a config...

PX to REM Converter

Convert pixel values to rem, with a configurable root font size - the common def...

REM to PX Converter

Convert rem values to pixels, with a configurable root font size shown clearly i...

PX to EM Converter

Convert pixel values to em, based on the relevant parent/element font size (not...

CSS Specificity Calculator

Paste a CSS selector and see its specificity broken down as an (inline, ID, clas...

Image / SVG Developer Tools

Run All Checks

Format, minify, and convert SVG and images - Base64/Data URI tools, favicon and ICO generation, and image metadata inspection.

SVG Formatter

Paste SVG markup and get it cleanly re-indented, with malformed XML clearly repo...

SVG Minifier

Remove unnecessary whitespace and comments from SVG markup to reduce its size, w...

SVG Optimizer

Optimize SVG markup more aggressively than minification alone - removes redundan...

SVG to Data URI

Convert SVG markup into a data URI, ready to use directly in CSS background-imag...

Data URI to Image

Paste an image data URI and get a live preview plus a downloadable image file.

Image to Base64

Upload an image and get its raw Base64-encoded content - client-side, nothing is...

Base64 to Image

Paste a raw Base64 string and a MIME type, and get a preview plus downloadable i...

SVG to PNG Converter

Convert SVG to a downloadable PNG image, with configurable output dimensions and...

SVG to JPG Converter

Convert SVG to a downloadable JPG image with a solid background - JPG doesn't su...

Favicon Generator

Upload an image and generate a complete set of common favicon sizes plus the HTM...

ICO Generator

Convert an image into a valid, downloadable .ico file - the multi-resolution ico...

Image Dimension Checker

Upload an image and instantly see its width, height, aspect ratio, and file type...

Image Metadata Viewer

View the file-level metadata a browser can read from an image - dimensions, size...

WebP Converter

Convert an image to WebP using your browser's own encoder, with an adjustable qu...

AVIF Converter

Convert an image to AVIF using your browser's own encoder where available - with...

Image Aspect Ratio Calculator

Calculate an image's simplified aspect ratio from its width and height, and find...

Image Placeholder Generator

Generate a simple placeholder image with configurable dimensions, background col...

BlurHash Generator

Generate a BlurHash string from an image - a compact placeholder representation...

Security & Authentication Tools

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Generate strong passwords and real password hashes - bcrypt, Argon2, PBKDF2, Scrypt - including framework-specific formats for Laravel, Django, and more.

Secure Password Generator

Generate cryptographically random passwords using your browser's secure crypto.g...

Password Entropy Calculator

Estimate a password's entropy in bits based on its length and character set, wit...

Bcrypt Hash Generator

Generate a real bcrypt password hash in your browser, with a configurable cost f...

Argon2 Hash Generator

Generate a real Argon2 (Argon2i) password hash in your browser - the Password Ha...

Argon2id Hash Generator

Generate a real Argon2id password hash in your browser - the hybrid variant reco...

PBKDF2 Hash Generator

Generate a real PBKDF2 hash using your browser's native Web Crypto API - configu...

Scrypt Hash Generator

Generate a real scrypt password hash in your browser - configurable N/r/p cost p...

Laravel Password Hash Generator

Generate a real bcrypt or Argon2id hash compatible with Laravel's Hash::make() -...

PHP Password Hash Generator

Generate a real hash compatible with PHP's password_hash() - bcrypt (PASSWORD_BC...

Django Password Hash Generator

Generate a real Django-format password hash - pbkdf2_sha256, matching Django's e...

Node.js Password Hash Generator

Generate a real bcrypt hash matching what Node.js's bcrypt/bcryptjs packages pro...

Ruby on Rails Password Hash Generator

Generate a real bcrypt hash matching what Rails' has_secure_password (via the bc...

ASP.NET Password Hash Generator

Generate a real ASP.NET Core Identity-format password hash (PBKDF2-HMACSHA256, f...

Htpasswd Generator

Generate a real .htpasswd entry - bcrypt or Apache's own APR1-MD5 format - for A...

File & Data Conversion Tools

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Convert between CSV, JSON, XML, YAML, INI, TOML, Markdown, HTML, and plain text - accurate, client-side data format conversion.

CSV to JSON Converter

Convert CSV data to JSON - handles quoted fields, commas inside values, and mult...

JSON to CSV Converter

Convert a JSON array of objects to CSV - correctly quotes values containing comm...

CSV to XML Converter

Convert CSV data to XML - each row becomes an XML element with column values as...

XML to CSV Converter

Convert XML with repeated sibling elements to CSV - flattens each repeated eleme...

JSON to XML Converter

Convert JSON to well-formed XML - objects become nested elements, arrays become...

XML to JSON Converter

Convert XML to JSON - nested elements become nested objects, attributes are pres...

JSON to YAML Converter

Convert JSON to clean, properly-indented YAML using a real YAML serializer.

YAML to JSON Converter

Convert YAML to JSON using a real YAML parser - handles nested mappings, sequenc...

YAML to XML Converter

Convert YAML to well-formed XML by first parsing the YAML structure, then serial...

XML to YAML Converter

Convert XML to YAML by first parsing the XML into structured data, then serializ...

TSV to CSV Converter

Convert tab-separated values (TSV) to comma-separated values (CSV) - correctly q...

CSV to TSV Converter

Convert comma-separated values (CSV) to tab-separated values (TSV) - properly un...

INI to JSON Converter

Convert INI configuration files to JSON - sections become nested objects, key-va...

JSON to INI Converter

Convert a flat or one-level-nested JSON object to INI format - nested objects be...

TOML to JSON Converter

Convert TOML configuration files to JSON - supports tables, arrays, strings, num...

JSON to TOML Converter

Convert JSON to TOML - objects become tables, arrays of objects become arrays of...

Markdown to HTML Converter

Convert Markdown to clean HTML with a live, sanitized preview - headings, lists,...

HTML to Markdown Converter

Convert HTML to clean Markdown - preserves headings, lists, links, emphasis, cod...

HTML to Text Converter

Strip HTML markup and extract clean, readable plain text - preserves paragraph b...

Text to HTML Converter

Convert plain text to safely-escaped HTML - preserves line breaks and paragraphs...

Data / Number / Computer Science Tools

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Convert number bases, calculate bitwise operations and data storage units, and use everyday calculators - percentage, modulo, and more.

Binary Calculator

Perform addition, subtraction, multiplication, and division directly on binary n...

Binary to Decimal Converter

Convert a binary number to its exact decimal value, with the place-value calcula...

Decimal to Binary Converter

Convert a decimal number to its exact binary representation, with the conversion...

Hex to Decimal Converter

Convert a hexadecimal number to its exact decimal value, handling arbitrarily la...

Decimal to Hex Converter

Convert a decimal number to its exact hexadecimal value, handling arbitrarily la...

Octal Converter

Convert between octal and decimal (and binary/hex) - exact conversion for arbitr...

Number Base Converter

Convert a number between any two bases from 2 to 36 - binary, octal, decimal, he...

Bitwise AND/OR/XOR Calculator

Calculate bitwise AND, OR, XOR, and NOT on two numbers - shows binary and decima...

Bit Shift Calculator

Calculate left and right bit shifts - clearly distinguishes arithmetic (sign-pre...

Byte Converter

Convert between bits, bytes, KB, MB, GB, TB, and PB - decimal (1000-based) and b...

Bits to Bytes Converter

Convert bits to bytes (and back) - the fundamental 8-bits-per-byte conversion, w...

KB/MB/GB/TB Converter

Convert between KB, MB, GB, and TB - decimal and binary conventions clearly sepa...

Data Transfer Speed Calculator

Calculate transfer time from file size and connection speed - correctly distingu...

Download Time Calculator

Estimate download time from file size and connection speed - handles bits/bytes...

Storage Calculator

Calculate total storage needed for a quantity of items at a given size each - e....

File Size Calculator

Estimate raw file size from parameters - image dimensions and color depth, or au...

Percentage Calculator

Calculate percentages - X% of Y, percentage increase/decrease, percentage differ...

Modulo Calculator

Calculate the remainder of a division - clearly explains how negative operands a...

Scientific Notation Converter

Convert between standard decimal numbers and scientific notation - handles very...

Roman Numeral Converter

Convert between Roman numerals and decimal numbers - validates malformed Roman n...

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