📐 Unit Converter

Free length, weight & temperature converter — instant results as you type.

1. Pick a category

2. Enter a value and choose units

From

Unit

To Unit

—

Tip: the result updates live — just edit the value or change either unit.

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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.