All Tools
Browse our complete directory of 142+ free online tools across 17 categories. Every tool runs in your browser.
Encoding & Decoding
8 toolsBase64 Encode & Decode
Encode and decode Base64 strings
URL Encode & Decode
Encode and decode URL/percent-encoded strings
HTML Entity Encode & Decode
Encode and decode HTML entities
XML Escape & Unescape
Escape and unescape XML special characters
Base64 Image Encoder & Decoder
Convert images to Base64 data URIs and decode Base64 strings to images
JWT Decode & Inspect
Decode and inspect JWT tokens
Text to Binary Converter
Convert between text and binary representation
ASCII Table & Converter
ASCII reference table and text converter
Formatters & Beautifiers
8 toolsJSON Formatter & Beautifier
Format, beautify, and validate JSON
JSON to TypeScript
Convert JSON to TypeScript interfaces
Markdown Preview
Live Markdown to HTML preview
SQL Formatter & Beautifier
Format and beautify SQL queries
XML Formatter & Validator
Format, beautify, and validate XML
HTML Formatter & Beautifier
Format and minify HTML code
CSS Formatter & Beautifier
Format and minify CSS code
JavaScript Formatter & Beautifier
Format and minify JavaScript code
Generators
10 toolsUUID Generator
Generate random UUID v4 identifiers
Nano ID Generator
Generate compact, URL-friendly unique IDs
Password Generator
Generate secure random passwords
Lorem Ipsum Generator
Generate placeholder text
Random Number Generator
Generate random numbers in any range
Coin Flip Simulator
Flip a virtual coin - heads or tails
Dice Roller
Roll virtual dice for games and RPGs
JWT Builder & Signer
Build and sign JWT tokens visually
Random String Generator
Generate random strings and tokens
QR Code Generator
Generate QR codes from text or URLs
Hash & Crypto
5 toolsDeveloper Converters
5 toolsJSON to YAML Converter
Convert between JSON and YAML formats
CSV to JSON Converter
Convert between CSV and JSON formats
.env File Parser & Converter
Parse .env files to JSON, YAML, Docker, shell
SQL to MongoDB Query Converter
Convert SQL SELECT to MongoDB find()
HTML to Markdown Converter
Convert HTML to Markdown
Number & Color Converters
3 toolsText Tools
5 toolsRegex Tools
1 toolDate & Time
8 toolsUnix Timestamp Converter
Convert Unix timestamps to dates
Date Difference Calculator
Calculate the difference between two dates
Age Calculator
Calculate exact age from birthdate
Cron Expression Parser
Parse cron expressions to plain English
Crontab Generator
Build cron expressions with a visual UI
Timezone Converter
Convert times between timezones
ISO Date Formatter
Format and parse ISO 8601 dates
Hours Calculator
Calculate hours between times
Math & Science
5 toolsImage & Media
14 toolsImage Format Converter
Convert between PNG, JPG, and WebP
HEIC to JPG/PNG Converter
Convert iPhone HEIC photos to JPG/PNG
Image Compressor
Compress images to reduce file size
Image Resizer
Resize images to any dimensions
Merge PDF
Combine multiple PDFs into one
Split PDF
Split PDF into separate pages
Compress PDF
Reduce PDF file size
Rotate PDF
Rotate PDF pages
JPG to PDF Converter
Convert images to PDF
PDF to Image Converter
Convert PDF pages to JPG/PNG images
PDF to Text Extractor
Extract text from PDF files
SVG to PNG Converter
Convert SVG files to PNG images
Add Page Numbers to PDF
Add page numbers to PDF files
Word to PDF Converter
Convert Word documents to PDF
Validators
7 toolsJSON Validator
Validate and debug JSON syntax
Email Address Validator
Validate email address format
URL Validator
Validate URL format and structure
Credit Card Number Validator
Validate card numbers with Luhn check
YAML Validator
Validate and debug YAML syntax
JSON Schema Validator
Validate JSON data against a JSON Schema
Docker Compose Validator
Validate Docker Compose files for issues
Network & Web
3 toolsUtilities
6 toolsDiff Checker
Compare text and find differences
Chmod Calculator
Calculate Unix file permissions
Countdown Timer & Stopwatch
Countdown timer and stopwatch with lap times
Electricity Cost Calculator
Calculate electricity costs for appliances
Dog Age Calculator
Convert dog years to human years
Paint Calculator
Calculate paint needed for a room
Financial
31 toolsUK Take-Home Pay Calculator
UK salary after tax with Scottish rates
VAT Calculator UK
Add or remove UK VAT instantly
Etsy Fee Calculator
Calculate Etsy seller fees and profit
eBay Fee Calculator UK
Calculate eBay UK seller fees by category
Amazon Seller Fee Calculator UK
Calculate Amazon UK seller fees by category
Depop Fee Calculator
Calculate Depop seller fees and profit
Vinted Fee Calculator
Calculate Vinted buyer and seller fees
Stripe vs PayPal Fee Calculator
Compare Stripe and PayPal fees side by side
IR35 Calculator
Inside vs outside IR35 take-home pay
UK Redundancy Pay Calculator
Calculate statutory redundancy pay
Dividend vs Salary Calculator
Salary vs dividends for UK company directors
UK Student Loan Repayment Calculator
Will you ever repay your UK student loan?
Stamp Duty Calculator (SDLT)
Calculate UK stamp duty on property purchases
Mortgage Overpayment Calculator
See how overpayments reduce your mortgage
UK Pension Calculator
How much pension do you need to retire?
Capital Gains Tax Calculator UK
Calculate UK CGT on property and investments
Mortgage Calculator
Calculate mortgage payments and amortization
Loan Calculator
Calculate loan payments and total interest
Compound Interest Calculator
Calculate compound interest over time
Tip Calculator
Calculate tips and split the bill
Discount Calculator
Calculate discounts and savings
Savings Calculator
Calculate savings growth with compound interest
Auto Loan Calculator
Calculate car payments and total cost
Retirement Calculator
Project retirement savings and income
ROI Calculator
Calculate return on investment and CAGR
Paycheck Calculator
Calculate net take-home pay from salary
Debt Payoff Calculator
Compare debt payoff strategies and timeline
Credit Card Payoff Calculator
Calculate credit card payoff time and interest
Rent vs. Buy Calculator
Compare renting vs. buying a home
Home Affordability Calculator
Calculate how much house you can afford
Solar Panel Savings Calculator
Calculate solar panel savings and ROI
Health & Fitness
10 toolsBMI Calculator
Calculate Body Mass Index
Calorie & TDEE Calculator
Calculate daily calorie needs and TDEE
TDEE Calculator
Calculate TDEE and daily calorie needs
Body Fat Calculator
Calculate body fat percentage (US Navy method)
Ideal Weight Calculator
Calculate ideal weight by multiple formulas
Macro Calculator
Calculate daily macros for your diet goals
Pregnancy Due Date Calculator
Calculate pregnancy due date and milestones
Running Pace Calculator
Calculate running pace, finish time, and splits
One Rep Max Calculator
Estimate your 1RM for any lift
Alcohol Units Calculator
Count UK alcohol units and calories in your drinks
Unit Converters
13 toolsUnit Converter
Convert length, weight, temperature, volume
Inches to CM Converter
Convert inches to centimeters
CM to Inches Converter
Convert centimeters to inches
KG to LBS Converter
Convert kilograms to pounds
LBS to KG Converter
Convert pounds to kilograms
Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit
Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius
Miles to KM Converter
Convert miles to kilometers
KM to Miles Converter
Convert kilometers to miles
Feet to Meters Converter
Convert feet to meters
Meters to Feet Converter
Convert meters to feet
Ounces to Grams Converter
Convert ounces to grams
Grams to Ounces Converter
Convert grams to ounces