UNIT CONVERTER
Length, weight, volume, area, and temperature — convert between units instantly, calculated right here in your browser.
In short
Convert length, weight, volume, area, and temperature between common units instantly. Everything is calculated locally in your browser — no upload, no account needed.
3.2808399
How to convert a unit
- 1
Pick a category: length, weight, volume, area, or temperature.
- 2
Choose the unit you're converting from and enter a value.
- 3
Choose the unit you're converting to — the result updates instantly.
- 4
Use the swap button to flip the two units in one click.
Questions
- Which units are supported?
- Length (mm to miles), weight (milligrams to metric tons), volume (milliliters to gallons), area (square millimeters to hectares and acres), and temperature (Celsius, Fahrenheit, Kelvin).
- How accurate are the conversions?
- Conversions use standard, precise conversion factors (e.g. 1 inch = 2.54 cm exactly) and display up to 8 decimal places, so results are accurate for everyday and most technical use.
- Is my data sent anywhere?
- No. All math runs locally in your browser with JavaScript — nothing is uploaded or logged.
- Why is temperature handled differently from the other categories?
- Temperature scales don't share a common zero point the way length or weight units do, so converting between them needs an offset, not just a multiplier. The tool handles that automatically.
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