About the unit converter
Choose a category, type a value and pick the units to convert from and to. Every category is converted through one base unit (meters, kilograms, square meters, liters, meters per second or seconds), so any unit pair works and the results are consistent.
Temperature is different because the scales have different zero points, not only different sizes. Celsius, Fahrenheit and Kelvin are converted with offsets, and temperatures below absolute zero are rejected. A table shows common values in both directions.
Formula
- Result = value × (from factor ÷ to factor)
- °F = °C × 9/5 + 32
- K = °C + 273.15
Example
1 kilometer is 0.621371 miles, 1 kilogram is 2.204623 pounds and 25 °C is 77 °F, which is 298.15 K.