How to Use the Unit Converter

Fill in the fields above and click calculate. All calculations run instantly in your browser — no data is sent anywhere.

Frequently Asked Questions

What categories are available?

Length (mm to miles), Weight (mg to tons), Temperature (°C/°F/K), Volume (ml to gallons), Area (cm² to acres), and Speed (m/s to knots).

How accurate are conversions?

All conversions use standard SI base unit factors with 7 significant figures — suitable for science, engineering, and everyday use.

Why is temperature different?

Temperature scales have different zero points, requiring formula conversions rather than simple multiplication.