Unit Converter
Convert length, weight, temperature, and more. Instantly, in your browser.
All conversions happen locally in your browser. Nothing is uploaded or stored.
About this converter
Switching between metric and imperial units comes up constantly — checking a recipe written in cups when your kitchen scale reads grams, converting a US shoe size chart listed in inches, or figuring out how many kilometers a 10-mile run actually covers. This tool covers eight everyday categories (length, weight, temperature, area, volume, speed, data storage, and time) with the common units people actually search for, so you rarely need to open a second tab to double-check a formula.
Common conversions people look up
1 mile
1.609 km
1 kg
2.205 lb
100°F
37.8°C
1 GB
1024 MB
Questions people ask
Why do my results have so many decimal places?
Some conversions (like miles to kilometers) don't land on round numbers, so the tool shows up to six decimal places for accuracy. You can round the displayed value to whatever precision your use case needs.
Is this accurate enough for professional or scientific use?
The conversion factors used here match standard international definitions (e.g. 1 inch = 2.54 cm exactly), so results are accurate for everyday, academic, and most professional purposes. For regulated or legal measurements, always confirm against an official reference.
Does it work without an internet connection?
Once the page has loaded, all math runs locally in your browser using JavaScript — no server call is made for the conversion itself, so it keeps working even on a flaky connection.