All Free Tools
40+ free online tools — no registration, no downloads, instant results
Calculators
Basic Calculator
Quick calculations with history
Percentage Calculator
Discounts, increases, ratios
BMI Calculator
Body mass index calculator
Age Calculator
Exact age in years, months, days
Converters & Encoders
Unit Converter
Length, weight, temperature & more
Color Converter
HEX, RGB, HSL conversion
Base64 Encoder
Encode & decode Base64 text
Case Converter
UPPER, lower, Title, camelCase
Generators
Password Generator
Create strong, secure passwords
Lorem Ipsum Generator
Placeholder text for designs
QR Code Generator
Create QR codes for URLs & text
Random Generator
Numbers, dice, coin flip, cards
Developer Tools
Hash Generator
MD5, SHA-1, SHA-256 hashes
JSON Formatter
Pretty print & validate JSON
Text Diff Checker
Compare two blocks of text
Word Counter
Count words, chars, sentences
Productivity
Online Timer
Countdown timer with alarm
Stopwatch
Track time with lap function
Gematria Calculator
9 ciphers, full alphabet values
Number Properties
Prime, factors, roman numerals
Financial & Date Tools
Tip Calculator
Calculate tips & split bills
Loan Calculator
Monthly payments & amortization
Date Calculator
Days between dates & date math
Sale Price Calculator
Calculate discounts & savings