How it works
Length, weight, and speed are converted through a common base unit using standard conversion factors. Temperature also needs an offset: Celsius to Fahrenheit is C × 9 / 5 + 32. The tool rejects temperatures below absolute zero.
Standard formula
value × source factor / target factorWorked example
1 metre equals about 3.28084 feet. 0°C equals 32°F, and 100 km/h equals about 62.137119 mph.
Frequently Asked Questions
Which mile is used?
The international mile: exactly 1,609.344 metres.
How do I convert temperature?
Choose Temperature, then Celsius, Fahrenheit, or Kelvin as the source and target units.
Can I convert between different measurements?
No. Length cannot be converted to weight without additional physical information.
Why are some results rounded?
The display uses up to six decimal places. Calculations retain more precision internally.