All Tools

Unit Converter

Convert length, weight, temperature, volume, area and speed between metric and imperial units instantly.

  • No upload
  • Browser-based
  • Free
  • No signup
Result
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—

Calculated in your browser — nothing you enter is uploaded or stored.

Calculated in your browser.

How to use Unit Converter

  1. Choose a category (length, weight, temperature, volume, area or speed).
  2. Enter a value.
  3. Pick the 'from' and 'to' units.
  4. Read the converted result, or hit swap to reverse.

Common use cases

  • Cooking & recipes.
  • Travel.
  • DIY & study.

Tips

  • Use the swap button to flip the conversion without re-picking units.
  • Temperature uses proper formulas, not a simple factor, so it handles negatives correctly.

Troubleshooting

Frequently asked questions

What can it convert?
Length/distance, weight/mass, temperature, volume, area and speed — including everyday pairs like cm↔inches, kg↔lb, °C↔°F, litres↔gallons and km/h↔mph.
How accurate is it?
It uses exact conversion factors (for example 1 inch = 2.54 cm exactly) and real temperature formulas, then rounds the display sensibly. Very large or tiny results switch to scientific notation.
Metric or imperial?
Both. Pick any 'from' and 'to' unit within a category and use the swap button to reverse the direction.
Is anything I enter uploaded?
No. Everything runs entirely in your browser — nothing you enter is uploaded, stored or shared, and no signup is needed.