Unit Converter
Convert between metric and imperial units for length, weight, temperature and volume. Pick a category, type a value and read every equivalent instantly.
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- Choose a category (length, weight, temperature, volume).
- Type the value to convert.
- Pick the "from" and "to" units.
- The result appears instantly; use swap to reverse.
Metric and imperial in one place
This converter covers the four categories people search for most: length (meters, feet, miles, inches), weight (kilograms, pounds, ounces), temperature (Celsius, Fahrenheit, Kelvin) and volume (liters, gallons, cups). Everything is computed in your browser from exact reference factors, so results are consistent and instant.
Why temperature is special
Length, weight and volume convert by simple multiplication, but temperature uses formulas with an offset: °F = °C × 9/5 + 32, and K = °C + 273.15. That offset is why 0 °C is 32 °F, not zero — a common source of mistakes that this tool handles correctly.
Handy everyday conversions
1 meter ≈ 3.28 feet · 1 mile ≈ 1.61 km · 1 kg ≈ 2.20 lb · 1 inch = 2.54 cm · 1 US gallon ≈ 3.79 L · 20 °C = 68 °F. Cooking (cups, ounces), travel (miles, Fahrenheit) and shipping (pounds, inches) are the most common reasons people convert.
Frequently asked questions
Which gallon does it use?
The US gallon (≈ 3.785 L). The UK imperial gallon is larger (≈ 4.546 L); if you need it, convert to liters and note the difference.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. Example: 25 °C × 9/5 = 45, + 32 = 77 °F. This tool does it automatically.
Are the conversions exact?
They use standard reference factors (e.g. 1 inch = 2.54 cm exactly). Displayed results are rounded for readability.
Is anything sent to a server?
No. All conversions run in your browser.