Unit Converter
Convert length, weight, temperature, speed, and area units instantly.
All Length Conversions
| mm | 1 |
| cm | 0.1 |
| m | 0.001 |
| km | 0.000001 |
| inch | 0.039370079 |
| ft | 0.0032808399 |
| yard | 0.0010936133 |
| mile | 6.2137119e-7 |
Unit Converter supports five categories: Length (mm to miles), Weight (mg to tonnes), Temperature (°C, °F, K), Speed (m/s to knots), and Area (mm² to hectares). Edit either field and the other updates instantly.
Frequently Asked Questions
How does temperature conversion work? +
Temperature is converted through Kelvin as the base unit. °C = K − 273.15; °F = (K − 273.15) × 9/5 + 32.
What precision does the converter use? +
Results are shown to up to 8 significant figures using JavaScript's number precision. For scientific calculations requiring higher precision, use a dedicated calculator.
Are imperial and metric units both supported? +
Yes. Each category includes both SI (metric) and imperial units so you can convert in any direction.
How to Use
- 1
Select a category
Choose the measurement category: length, weight, temperature, area, or volume.
- 2
Enter a value
Type the value you want to convert and select the source unit from the dropdown.
- 3
Read the result
The converted value appears instantly in your chosen target unit. All equivalent values update in real-time.
Frequently Asked Questions
- Length (meters, feet, inches, miles, km, cm), weight (kg, lb, g, oz), temperature (°C, °F, Kelvin), area, and volume.