How to use this unit converter
- Pick a category: Length (meters, feet, inches, miles…), Weight (kilograms, pounds, ounces…), or Temperature (Celsius, Fahrenheit, Kelvin).
- Type a value in the From field and select the source unit.
- Choose the target unit in the second dropdown — the converted value appears instantly.
- Click the ⇄ button to swap the two units without retyping.
Common conversions
- Length: inch to cm, foot to meter, mile to kilometer, yard to meter.
- Weight: kilogram to pound, ounce to gram, pound to kilogram.
- Temperature: Celsius to Fahrenheit, Fahrenheit to Celsius, Kelvin to Celsius.
FAQ
- Is this tool free? Yes — no sign-up, no ads, runs entirely in your browser.
- Does it work offline? After the page loads, all conversions run locally, so it keeps working without a connection.
- Are the results precise? Conversions use standard factors (e.g. 1 inch = 2.54 cm exactly). Results are rounded to 8 significant digits for readability.