What does this calculator calculate?
Convert m, cm, km, in, ft and mi; kg, g, lb and oz; and °C, °F and K. Length and weight use defined factors; temperature uses conversion formulas.
Worked examples
These examples use fixed sample inputs, separately from your current calculation. Displayed numbers are rounded.
South Korea units
- Measurement
- Length
- Value
- 1
- Units
- m → ft
- Result
- 3.28084 ft
US units
- Measurement
- Length
- Value
- 1
- Units
- ft → m
- Result
- 0.3048 m
Frequently asked questions
How many centimeters are in one inch?
One inch is exactly 2.54 centimeters. One foot is 0.3048 meters and one pound is 0.45359237 kilograms.
How do you convert Fahrenheit to Celsius?
Celsius = (Fahrenheit − 32) × 5 ÷ 9. Thus 32°F is 0°C. Temperatures below absolute zero, −273.15°C, are rejected.
Method and references
The displayed mathematical formula and input conditions apply. Results are rounded for display after internal calculation; check the assumptions for your use case.
NIST · SI conversion factorsCalculation methods, precision and data storage
Content updated: