About Unit Converter
Convert between units of length, weight, temperature, volume, area, speed, and more. Pick a category, enter a value, and see it converted across common units instantly.
How to Use
- Choose a measurement category (length, weight, temperature, etc.).
- Enter the value and its unit.
- Select the unit you want to convert to.
- Read the converted result.
Why Use This Tool?
- Accurate — built on precise, well-tested mathematical formulas.
- Instant — all calculations happen client-side for zero latency.
- Private — no data is sent to any server; your information stays on your device.
- Free — no sign-up, no limits, no hidden costs.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32: °F = (°C × 9/5) + 32. So 100°C = 212°F. To go back: °C = (°F − 32) × 5/9.
How many kilometres are in a mile?
One mile equals about 1.60934 kilometres, and one kilometre is about 0.621371 miles.
Is 1 kg equal to 1 litre?
Only for water at standard conditions. Weight-to-volume conversions depend on the substance's density, so 1 litre of oil or milk does not weigh exactly 1 kg.