One converter for every common measurement: pick a category, choose your units, and the conversion updates as you type — using exact international definitions.
How it works
- Select the category of measurement you want to convert (e.g., Length or Weight).
- Choose your starting unit and your target unit.
- Enter the value, and the engine calculates the exact conversion instantly.
Frequently asked questions
Are the factors exact?
Yes — they are the international (SI) definitions, not approximations: the inch is defined as exactly 25.4 mm.
US vs UK gallons?
Different units: 1 US gal = 3.785 L, 1 UK gal = 4.546 L. The volume converter lists both.
KB vs KiB?
Decimal (1000-based) vs binary (1024-based). Storage marketing uses decimal; operating systems often report binary.