Free Unit Converter — Length, Weight, Temperature, Volume & Speed
~15 seconds
Convert between the most commonly used units across length, weight, temperature, volume, and speed. Select your conversion type, enter a value, and get the result instantly with the conversion formula.
What this calculator determines
It converts an entered value between units of length, weight, temperature, volume, or speed using fixed conversion factors and shows the formula.
Related calculators
Examples
Miles to kilometers
26.2 miles (marathon) → kilometers
Calculation
- Conversion factor: 1 mile = 1.60934 km
- 26.2 × 1.60934 = 42.16 km
26.2 miles = 42.16 kilometers
Fahrenheit to Celsius
98.6°F (body temperature) → Celsius
Calculation
- Formula: °C = (°F - 32) × 5/9
- (98.6 - 32) × 5/9 = 66.6 × 0.5556 = 37°C
98.6°F = 37.0°C