UnitCalc — Instant Unit Conversions
Fast, accurate conversions with zero clutter. Built for speed and SEO — and for humans.
Browse categories
View Top 50 →Length
Convert between common length units instantly with accurate formulas and reference tables.
Weight
Convert between common mass units using standard SI and imperial conversion factors.
Temperature
Convert Celsius, Fahrenheit, and Kelvin using the correct formulas.
Volume (Cooking)
Convert cooking and household volume units instantly.
Speed
Convert mph, km/h, and m/s for travel, sports, and science.
Top 50 Unit Conversions
The most commonly searched conversions — fast, accurate, and instant.
- Meters to FeetConvert m → ft
- Kilograms to PoundsConvert kg → lb
- Celsius to FahrenheitConvert °C → °F
- Fahrenheit to CelsiusConvert °F → °C
- Pounds to KilogramsConvert lb → kg
- Feet to MetersConvert ft → m
- Cups to MillilitersConvert cup → mL
- Miles per Hour to Kilometers per HourConvert mph → km/h
- Kilometers per Hour to Miles per HourConvert km/h → mph
- Kilometers to MilesConvert km → mi
- Milliliters to CupsConvert mL → cup
- Miles to KilometersConvert mi → km
- Inches to CentimetersConvert in → cm
- Centimeters to InchesConvert cm → in
- Grams to OuncesConvert g → oz
- Tablespoons to TeaspoonsConvert tbsp → tsp
- Ounces to GramsConvert oz → g
- Celsius to KelvinConvert °C → K
- Kelvin to CelsiusConvert K → °C