Unit Converter
Convert between hundreds of units across eight categories — length, weight, temperature, volume, area, speed, time, and data. Results update as you type. Free, no sign-up, nothing leaves your device.
1 Mile (mi) = 1609.344 Metre (m)
How It Works
Pick a category
Tap one of the eight category buttons — Length, Weight, Temperature, Volume, Area, Speed, Time, or Data — to load the right set of units.
Enter your value and units
Type the number you want to convert, then choose your source and target units from the dropdowns. The result updates instantly — no button to press.
Copy or swap
Tap the copy icon next to the result to copy it to your clipboard. Use the swap button between the fields to quickly reverse the conversion direction.
How to Use the Unit Converter
- Select a unit category from the eight tabs at the top of the tool.
- Type your value in the From field.
- Choose your source unit and target unit from the dropdowns.
- Read the result — it updates as you type, instantly.
- Use the ⇅ swap button to reverse the direction, or the copy icon to copy the result.
Common Unit Conversions
Length
| From | To | Multiply by |
|---|---|---|
| 1 mile | km | 1.60934 |
| 1 km | miles | 0.62137 |
| 1 foot | metres | 0.3048 |
| 1 inch | cm | 2.54 |
| 1 yard | metres | 0.9144 |
Weight
| From | To | Multiply by |
|---|---|---|
| 1 kg | pounds | 2.20462 |
| 1 pound | kg | 0.45359 |
| 1 stone | kg | 6.35029 |
| 1 ounce | grams | 28.3495 |
Temperature
| From | Formula | Example |
|---|---|---|
| °F → °C | (°F − 32) × 5/9 | 98.6 °F = 37 °C |
| °C → °F | (°C × 9/5) + 32 | 100 °C = 212 °F |
| °C → K | °C + 273.15 | 0 °C = 273.15 K |
Features
- Eight unit categories: length, weight, temperature, volume, area, speed, time, and digital data.
- Metric and imperial: mix and match between systems — kilometres, miles, kilograms, pounds, litres, gallons, and more.
- Instant results: conversions update as you type — no button to press.
- Swap direction: reverse from and to units with a single tap.
- Copy to clipboard: grab the result in one click.
- Your data stays private: all calculations run locally in your browser — nothing is uploaded or stored.
- No account required: open the page and start converting straight away.
- Works on any device: optimised for desktop and mobile browsers.
Frequently Asked Questions
How many metres are in a mile?
There are exactly 1,609.344 metres in one international mile. To convert miles to metres, multiply by 1,609.344. To go the other way, divide by 1,609.344 (or multiply by 0.000621371).
How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example: 98.6 °F → (98.6 − 32) × 5/9 = 37 °C. For Celsius to Fahrenheit, multiply by 9/5 and add 32.
How many pounds in a kilogram?
One kilogram equals approximately 2.20462 pounds. Conversely, one pound is approximately 0.453592 kilograms. To convert a weight in stone to kilograms, multiply by 6.35029.
How many litres in a US gallon?
One US gallon equals approximately 3.785 litres. One imperial (UK) gallon equals approximately 4.546 litres. These differ significantly — always check which gallon is being used.
How many gigabytes in a terabyte?
One terabyte (TB) equals 1,024 gigabytes (GB) in binary (IEC) measurement, which is what operating systems typically display. Hard drive manufacturers often use decimal units where 1 TB = 1,000 GB, which is why a "1 TB" drive shows as ~931 GB in Windows or macOS.
Is my data stored or sent anywhere?
No. All conversions happen entirely in your browser using JavaScript. Nothing you enter is ever sent to or stored on any server. You can even use this tool offline once the page has loaded.