Unit Converter
Convert between metric and imperial units for length, weight, temperature, and more.
📖 Common Conversion Reference
Length
| Metric | Imperial |
|---|---|
| 1 kilometer | 0.621 miles |
| 1 meter | 3.281 feet |
| 1 centimeter | 0.394 inches |
| 1 millimeter | 0.039 inches |
Weight
| Metric | Imperial |
|---|---|
| 1 kilogram | 2.205 pounds |
| 1 gram | 0.035 ounces |
| 1 metric ton | 1.102 US tons |
💡 Tip: The metric system is based on powers of 10, making conversions within the system simple. 1 kilometer = 1000 meters = 100,000 centimeters.
❓ Frequently Asked Questions
Almost every country in the world uses the metric system. The United States, Myanmar, and Liberia are the only countries that haven't officially adopted it, though metric units are used in scientific and some commercial contexts in the US.
To convert Celsius to Fahrenheit, multiply by 9/5 (or 1.8) and add 32. Formula: °F = (°C × 9/5) + 32. For example, 20°C = (20 × 1.8) + 32 = 68°F.
A US gallon is approximately 3.785 liters, while a UK (Imperial) gallon is approximately 4.546 liters. The UK gallon is about 20% larger than the US gallon.