Unit Converter
Instant conversions across length, weight, temperature, and more — as you type.
How it works
-
Pick a category like length, mass, or temperature.
-
Choose the units to convert from and to.
-
Type a value — the result updates instantly.
-
Use the swap button or quick chips for common conversions.
Frequently asked questions
Which unit categories are supported?
Length, mass, temperature, area, volume, time, and data storage — covering everyday conversions like cm to inches, kg to pounds, and Celsius to Fahrenheit.
How accurate are the conversions?
Conversions use exact internationally defined factors and are shown to up to 10 significant digits, so they're accurate for homework, lab work, and recipes alike.
Is anything sent to a server?
No. All conversions are calculated locally in your browser — your numbers never leave your device.
Related tools
Date Calculator
Count down to exam day, or find what date it will be in N days.
GPA Calculator
Term and cumulative GPA, weighted by credit hours — on 4.0 and 5.0 grading scales.
Hijri Converter
Switch any date between the Umm al-Qura Hijri and Gregorian calendars instantly.
Word Counter
Count words, characters, and sentences as you type — English and Arabic.