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Browse our collection of 118+ free online tools for developers, designers, and content creators.
Convert between different units of length (meters, feet, inches, etc.)
Convert between different units of weight (kg, lbs, ounces, etc.)
Convert between Celsius, Fahrenheit, and Kelvin
Convert between different units of area (sq meters, acres, sq feet, etc.)
Convert between liters, gallons, cups, tablespoons, etc.
Convert between km/h, mph, m/s, knots, etc.
Convert between seconds, minutes, hours, days, years, etc.
Convert between bits, bytes, KB, MB, GB, TB, PB, etc.
Convert between joules, calories, watts, horsepower, etc.
Format, minify, and validate JSON data
Encode and decode Base64 strings
Test JSONPath expressions against your JSON data
Compare and visualize differences between two JSON objects
Create and send HTTP requests to test APIs
Verify SSL certificate validity and expiration
Inspect HTTP response headers for a URL
Perform DNS record lookups for a domain
Generate harmonious color palettes for your designs
Generate MD5, SHA1, SHA256, SHA512 hashes
Generate unique UUIDs
Convert JSON to CSV and vice versa
Test and debug regular expressions
Convert Markdown to HTML and vice versa
Generate QR codes from text or URLs
Generate secure random passwords
Format and beautify SQL queries
Generate placeholder text
Remove comments from code files
Count words, characters, lines, and paragraphs
Split, Join, Trim, Reverse, and Repeat text
Convert text to uppercase, lowercase, camelCase, and more
Find and replace text with regex support
Convert between different character encodings
Compare two text blocks and find differences
Generate random numbers within a range
Shuffle lists, pick winners, and make groups
Flip a digital coin (Heads/Tails)
Roll virtual dice (1-6)
Convert between Hex, RGB, and HSL
Minify CSS code
Calculate age from birth date
Calculate Body Mass Index
Calculate percentages, increases, and decreases
Advanced calculator for scientific operations
Calculate protein, carbs, and fat needs
Generate, customize, and download structured professional payslips in PDF format
Calculate Fixed Deposit returns and maturity value
Calculate Compound Annual Growth Rate
Calculate Goods and Services Tax exclusive and inclusive
Calculate monthly EMIs with amortization
Calculate returns on Systematic Investment Plans
Calculate compound interest with monthly/yearly contributions
Calculate how much to save to reach a goal
Simple income tax calculator
Convert between different currencies
Generate balance sheets
Encode and decode Ethereum ABI data
Validate and checksum Ethereum addresses
Estimate current Ethereum network gas prices
Generate Merkle trees and proofs
Convert between Wei, Gwei, and Ether
Generate random Ethereum wallets (Address, Private Key, Mnemonic)
Stress-test RPC endpoints and analyze network latency on Testnets.
Estimate time based on block number
Get wallet address from Mnemonic or Private Key
Add, subtract, multiply, and divide fractions
Find Greatest Common Divisor and Least Common Multiple
Solve quadratic equations (ax² + bx + c = 0)
Calculate determinant, inverse, transpose with steps
Translate text to 0s and 1s
Convert text and numbers to/from Hex
Crypto-friendly encoding (no 0/O, l/I)
Read the contents of a token
Escape special characters for HTML
Turn images into code strings
Convert Binary numbers to Hexadecimal manually
Convert Binary numbers to Decimal format
Convert Binary code to ASCII Text
Convert Binary numbers into Octal
Convert Hexadecimal into Binary code
Convert Hexadecimal to Decimal base
Decode Hexadecimal strings to ASCII Text
Convert Decimal numbers to Hexadecimal
Convert Decimal base to Octal format
Translate Decimal numbers to Binary
Convert ASCII letters to Binary format
Translate ASCII text to Decimal numbers
Convert ASCII text to Hex characters
Convert Octal numbering to Decimal
Generate Binary representations of Octal
Epoch to Human-readable & vice versa
Compare multiple cities side-by-side
Stopwatch & Countdown Timer
What week of the year is it?
Visual UI to Cron string
Human readable explanation of Cron string
Convert between ISO 8601, RFC 2822, US/UK formats
Calculate difference between two dates
Calculate future or past dates
Decode timestamps found in Hex dumps
Convert Excel files to JSON or CSV
Extract audio track from video files
Check wallet balances across networks
Convert between JPG, PNG, WebP
Compress images to save bandwidth
Resize images with custom dimensions
Convert images to PDF document
Minify SVG code for lighter files
Generate website icons (ICO, PNG)
Remove metadata for privacy
Record your screen directly in browser
Record audio from microphone
Visually trim and cut audio files
Generate pure tones for testing
Check your IP address and get IP information
Look up domain information and ownership
Check if a website is up and running
Calculate token counts and costs for OpenAI, Claude, and Gemini models
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