Unit Converter
Convert length, weight, temperature and volume.
A general-purpose unit converter for length (m/ft/in/km/mi), weight (kg/lb/oz), temperature (°C/°F/K) and volume (L/gal/cup). Type in any field and the others update live.
Common use cases
- Convert kilometres to miles for trip planning and running pace
- Switch recipes between metric (g, kg, ml) and imperial (oz, lb, cups)
- Convert °C ↔ °F for travel weather forecasts
- Translate between US and UK gallons (they're different) for fuel economy
Frequently asked questions
Are the conversion factors exact?▾
Yes — we use the international definitions (1 inch = 2.54 cm exactly, 1 lb = 0.45359237 kg).
Does it support US and UK gallons?▾
Yes — select 'US gallon' (3.785 L) or 'UK / imperial gallon' (4.546 L) explicitly. They differ enough to matter for fuel economy and recipes.
Related tools
%
Percentage Calculator
Compute percent of a number, percent change, and inverse percent.
🎂
Age Calculator
Calculate exact age in years, months and days from a birthdate.
⚖
BMI Calculator
Calculate body mass index in metric or imperial units.
💵
Tip & Bill Splitter
Calculate tip and split a bill across any number of people.