All-in-One Free Online Tools
Luna Forge · Professional calculators & utilities · 100% private, no data leaves your browser
📐 Math & Statistics
🔢 Percentage Calculator
Calculate what is X% of Y
🔣 Fraction to Decimal
Convert fraction to decimal number
/
🔢 Decimal to Fraction
Convert decimal to simplified fraction
🧮 Scientific Calculator
Basic scientific operations
📊 Average Calculator
Calculate mean of numbers
⚖️ Ratio Calculator
Simplify and compare ratios
:
📈 Standard Deviation
Population standard deviation
🎲 Probability Calculator
Basic probability (favorable/total)
🔣 Equation Solver
Linear equation: ax + b = c
📐 Matrix Calculator (2×2)
Determinant and inverse
📄 File & Text Utilities
📝 Word & Character Counter
Count words and characters in text
🔠 Case Converter
Convert text case (upper/lower/title)
🔐 Password Generator
Generate strong random passwords
📋 JSON Formatter
Validate and format JSON data
🔐 Base64 Encoder/Decoder
Encode or decode Base64 strings
🔗 URL Encoder/Decoder
Encode or decode URLs
📑 Remove Duplicate Lines
Remove duplicate lines from text
📊 CSV to JSON Converter
Convert CSV data to JSON format
🔍 Regex Tester
Test regular expressions
🎨 Color Converter
HEX to RGB/HSL converter
⏱️ Productivity & Time
🍅 Pomodoro Timer
Focus timer with customizable duration
25:00
💵 Tip Calculator
Calculate tip and total bill
👥 Split Bill Calculator
Split bill among friends
📅 Date Difference
Calculate days between two dates
🎂 Age Calculator
Calculate exact age from birthdate
💼 Hourly ↔ Salary
Convert hourly wage to annual salary
⏰ Work Hours Tracker
Track work hours (local storage)