Calculators
Various calculators and converters
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
Length Converter
Convert between different length units
Weight Converter
Convert between different weight units
Area Converter
Convert between different area units
Volume Converter
Convert between different volume units
Data Size Converter
Convert between bytes, KB, MB, GB, TB
Number Base Converter
Convert between binary, decimal, hex, octal
Roman Numeral Converter
Convert between Roman and Arabic numerals
Timestamp Converter
Convert Unix timestamps to dates
Unit Converter
Convert between various units
Timestamp Converter
Convert Unix timestamps to dates
Date Calculator
Calculate date differences and add/subtract
Date Difference Calculator
Calculate the difference between two dates
Percentage Calculator
Calculate percentages
PX to REM Converter
Convert between pixels and rem/em
Number Base Converter
Convert between binary, decimal, hex, octal
Aspect Ratio Calculator
Calculate aspect ratios and dimensions
Byte Counter
Calculate string byte size in different encodings
Loan Calculator
Calculate loan payments and interest
Discount Calculator
Calculate discounts and savings
GCD/LCM Calculator
Calculate greatest common divisor and least common multiple
Prime Number Checker
Check if a number is prime
Factorial Calculator
Calculate factorial of a number
Compound Interest Calculator
Calculate compound interest
Fuel Cost Calculator
Calculate fuel costs for trips
Sales Tax Calculator
Calculate sales tax
Calorie Calculator
Calculate daily calorie needs
Tip Calculator
Calculate tips and split bills
Age Calculator
Calculate age from birthdate
BMI Calculator
Calculate Body Mass Index
Countdown Timer
Countdown to a specific date/time
Stopwatch
Simple stopwatch with lap times
World Clock
View time in different timezones
Pomodoro Timer
Pomodoro technique timer