Free Online Tools
93 free tools for developers, writers, and everyday tasks. Everything runs in your browser — no uploads, no sign-ups, no tracking.
Popular Tools
JSON Formatter
Format, beautify, and validate JSON data instantly. Free online JSON formatter for developers.
Base64 Encoder / Decoder
Encode and decode Base64 strings online. Supports UTF-8 text and binary data.
Regex Tester
Test and debug regular expressions online. Real-time matching with highlights and capture groups.
Markdown Preview
Live Markdown preview with GitHub-flavored rendering. Write and preview in real-time.
Word Counter
Count words, characters, sentences, and paragraphs in your text. Real-time statistics.
Case Converter
Convert text between lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, and more.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text. Choose paragraphs, sentences, or words — perfect for design mockups.
Color Converter
Convert colors between HEX, RGB, HSL, and HSV formats. Interactive color picker included.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
UUID Generator
Generate random UUIDs (v4). Generate single or bulk UUIDs with one click.
Password Generator
Generate strong, random passwords. Customize length, character sets, and exclude ambiguous characters.
QR Code Generator
Generate QR codes from text, URLs, or any data. Download as PNG image.
URL Encoder / Decoder
Encode and decode URL-encoded strings. Handle special characters, query parameters, and percent-encoding.
URL Parser
Parse and analyze URL components: protocol, hostname, path, query parameters, hash, and port.
Image Compressor
Compress JPEG, PNG, and WebP images online. Adjust quality and see the file size reduction in real-time.
🛠️ Developer Tools
View all →JSON Formatter
Format, beautify, and validate JSON data instantly. Free online JSON formatter for developers.
Base64 Encoder / Decoder
Encode and decode Base64 strings online. Supports UTF-8 text and binary data.
Regex Tester
Test and debug regular expressions online. Real-time matching with highlights and capture groups.
Markdown Preview
Live Markdown preview with GitHub-flavored rendering. Write and preview in real-time.
HTML Entity Encoder
Encode and decode HTML entities. Convert special characters like <, >, & to their entity equivalents.
JWT Decoder
Decode JWT tokens and inspect header, payload, and signature. No server needed.
Code Minifier
Minify CSS, JavaScript, and HTML code. Remove whitespace and comments to reduce file size.
SQL Formatter
Format and beautify SQL queries. Keywords are automatically uppercased and indentation is applied.
Diff Checker
Compare two texts line by line. See added, removed, and unchanged lines with color highlighting.
Cron Expression Parser
Parse and explain cron expressions. Understand what each field means in human-readable language.
HTTP Status Code Reference
Browse all HTTP status codes with descriptions. Search by code number, name, or description.
Morse Code Translator
Translate text to Morse code and vice versa. Supports letters, numbers, and common punctuation.
Binary to Text
Convert text to binary and binary to text. Each character is represented as 8-bit binary.
HEX to Text
Convert text to hexadecimal and hexadecimal to text. Each character is two hex digits.
📝 Text Tools
View all →Word Counter
Count words, characters, sentences, and paragraphs in your text. Real-time statistics.
Case Converter
Convert text between lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, and more.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text. Choose paragraphs, sentences, or words — perfect for design mockups.
Text Deduplicator
Remove duplicate lines from text. Optionally show only duplicates or keep the original order.
Text Line Sorter
Sort lines of text alphabetically, numerically, randomly, or by length. Reverse order supported.
Find and Replace
Find and replace text with support for case-sensitive and regex matching. See match count in real-time.
Text to Slug
Convert any text to a URL-friendly slug. Lowercase, remove special characters, and replace spaces with hyphens.
Text Reverser
Reverse text, words, or lines. Choose from full reversal, word order reversal, or line order reversal.
Remove Extra Spaces
Clean up text by removing extra spaces, tabs, and blank lines.
Random Line Picker
Pick a random line from a list of text. One item per line.
🔄 Converters
View all →Color Converter
Convert colors between HEX, RGB, HSL, and HSV formats. Interactive color picker included.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal. Live conversion as you type.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin. Instant conversion as you type.
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers. Supports numbers 1 through 3999.
CSV to JSON
Convert CSV data to JSON format. Automatically detects headers and creates an array of objects.
JSON to CSV
Convert JSON array to CSV format. Extracts keys as headers and values as rows.
YAML to JSON
Convert simple YAML to JSON format. Supports key-value pairs, numbers, and booleans.
XML to JSON
Convert XML to JSON format. Parses XML structure into nested JSON objects.
🎲 Generators
View all →UUID Generator
Generate random UUIDs (v4). Generate single or bulk UUIDs with one click.
Password Generator
Generate strong, random passwords. Customize length, character sets, and exclude ambiguous characters.
QR Code Generator
Generate QR codes from text, URLs, or any data. Download as PNG image.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text input.
Random Number Generator
Generate random numbers within a range. Uses cryptographically secure randomness.
Random Color Generator
Generate random hex colors. Click to generate and copy the hex code.
Coin Flip
Flip a virtual coin. Heads or tails — perfect for making quick decisions.
Dice Roller
Roll virtual dice. Choose from d4, d6, d8, d10, d12, d20, and d100.
Random Choice Picker
Pick a random item from a list. Enter one item per line and let chance decide.
🖼️ Image Tools
View all →Image Compressor
Compress JPEG, PNG, and WebP images online. Adjust quality and see the file size reduction in real-time.
Image to Base64
Convert any image to a Base64 data URI. Copy the code or preview the result.
Image Resizer
Resize images by specifying new width and height in pixels. Download the resized image.
Image Cropper
Crop images by specifying X, Y coordinates and width/height. Download the cropped result.
EXIF Data Viewer
View EXIF metadata from JPEG photos: camera make, model, exposure, ISO, date taken, and more.
Image Color Picker
Upload an image and click any pixel to get its hex color code. Copy with one click.
🌐 Network Tools
View all →URL Encoder / Decoder
Encode and decode URL-encoded strings. Handle special characters, query parameters, and percent-encoding.
URL Parser
Parse and analyze URL components: protocol, hostname, path, query parameters, hash, and port.
IP Lookup
Look up IP address information including location, ISP, and timezone. Query your own IP or any other.
User Agent Parser
Parse browser User Agent strings. Identify OS, browser, and device.
HTTP Headers Checker
Fetch and display HTTP response headers from any URL.
MIME Type Reference
Browse and search MIME types by category and file extension.
Meta Tag Extractor
Extract SEO meta tags from any webpage. View title, OG tags, canonical.
DNS Lookup
Query DNS records: A, AAAA, CNAME, MX, NS, TXT via Google DNS-over-HTTPS.
🧮 Math & Utility
View all →Percentage Calculator
Calculate percentages instantly. Find what percent one number is of another, or calculate a percentage of a number.
BMI Calculator
Calculate your Body Mass Index (BMI). Supports metric (cm/kg) and imperial (in/lbs) units.
Age Calculator
Calculate your exact age in years, months, and days. Also shows total months, weeks, and days lived.
Days Between Dates
Calculate the number of days, weeks, and months between two dates.
Add / Subtract Days
Add or subtract days from a date. See the resulting date instantly.
Day of Week Calculator
Find out what day of the week a given date falls on.
📐 Unit Converters
View all →Length Converter
Convert between meters, kilometers, miles, feet, inches, centimeters, and more.
Weight Converter
Convert between kilograms, grams, pounds, ounces, tons, and more.
Speed Converter
Convert between km/h, mph, m/s, knots, and ft/s.
Area Converter
Convert between square meters, acres, hectares, square feet, and more.
Volume Converter
Convert between liters, gallons, milliliters, cups, and more.
Data Storage Converter
Convert between bytes, KB, MB, GB, TB, and PB.
Time Unit Converter
Convert between seconds, minutes, hours, days, weeks, and years.
Angle Converter
Convert between degrees, radians, gradians, arcminutes, and arcseconds.
🎨 CSS & Design
View all →CSS Gradient Generator
Create beautiful CSS gradients visually.
Box Shadow Generator
Generate CSS box-shadow with visual preview.
Border Radius Previewer
Preview and generate CSS border-radius.
Text Shadow Generator
Create CSS text-shadow effects with live preview.
CSS Filter Playground
Experiment with CSS filters: blur, brightness, contrast, grayscale.
CSS Transform Previewer
Preview CSS transforms: rotate, scale, skew, translate.
🔤 Encoders
View all →ROT13 Encoder
Encode and decode text with ROT13 cipher.
Unicode Escape Converter
Convert Unicode characters to \uXXXX escape sequences.
ASCII Code Converter
Convert text to ASCII decimal codes and back.
Punycode Converter
Convert international domain names to Punycode.
UUencode / UUdecode
Encode and decode text with UUencoding.
Quoted-Printable Encoder
Encode and decode quoted-printable text.
💪 Health
View all →BMR Calculator
Calculate Basal Metabolic Rate with Mifflin-St Jeor equation.
Body Fat Calculator
Estimate body fat using U.S. Navy method.
Ideal Weight Calculator
Calculate ideal weight using five established formulas.
Calorie Calculator
Calculate daily calorie needs for maintenance, loss, or gain.
Water Intake Calculator
Calculate recommended daily water intake by weight.
⏱️ Date & Time
View all →Countdown Timer
Set a countdown timer with start, stop, and reset.
Stopwatch
Precise online stopwatch with centisecond accuracy.
Time Zone Converter
Convert time between UTC offsets.
Work Days Calculator
Calculate working days (Mon-Fri) between two dates.
Week Number Calculator
Find the ISO week number for any date.
World Clock
View current time in major cities worldwide.