Unit Converter – Length, Mass, Area & Temperature
Unit Converter 1 km = 1000 m
Type a number in any field. The other units in the same tab update instantly, together with the conversion factor to the base unit.
The converter above changes values between units of length, mass, area, and temperature and shows the conversion factor it uses.
Formulas used
1 km = 1000 m, 1 m = 100 cm
1 m² = 10,000 cm²
°F = 9/5 · °C + 32
- Area factors are the square of length factors.
- Temperature conversions add an offset, so they are not simple multiplications.
Worked example
Convert 25 °C to Fahrenheit:
9/5 · 25 + 32 = 77 °F
Enter the same values in the calculator above to see every step of the solution.
How to use the calculator
- Choose the quantity, the source unit, the target unit, and enter the value.
- Press the calculate button. The result appears instantly.
- Read the step-by-step solution, rendered with KaTeX, to check your own work.