Unit Converter
Supports three conversion types: length (meter, kilometer, foot, inch, mile), weight (kilogram, pound, gram, tonne), and temperature (Celsius, Fahrenheit, Kelvin). Conversion is instant as you type.
| Unit | Equals | Note |
|---|---|---|
| 1 Kilometer | 0.6214 miles | 1 mile = 1.6093 km |
| 1 Meter | 3.2808 feet | = 39.37 inches |
| 1 Inch | 2.54 cm | = 25.4 mm (exact) |
| 1 Kilogram | 2.205 lbs | 1 lb = 0.4536 kg |
| 0°C (Freezing) | 32°F = 273.15 K | Water freezing point |
| 100°C (Boiling) | 212°F = 373.15 K | Water boiling point |
How many inches are in a foot?
1 foot = 12 inches. 1 meter = 3.281 feet = 39.37 inches. 1 kilometer = 0.621 miles.
How do I convert Celsius to Fahrenheit?
°F = (°C × 9÷5) + 32. Example: 30°C = (30 × 1.8) + 32 = 86°F. Reverse: °C = (°F − 32) × 5÷9.
How many kilograms are in a pound?
1 pound = 0.4536 kilogram. 1 kilogram = 2.205 pounds. 1 metric tonne = 1,000 kilograms = 2,205 pounds.
How do I convert kilometers to miles?
1 kilometer = 0.6214 miles. 1 mile = 1.6093 kilometers. Example: 100 km = 62.14 miles. Use the tool for instant conversion.
What is Kelvin and how does it differ from Celsius?
Kelvin is the absolute temperature scale used in science. Absolute zero (0 K) = −273.15°C and is the coldest possible temperature. To convert Celsius to Kelvin: add 273.15.
How many centimeters are in an inch?
1 inch = exactly 2.54 centimeters (an internationally defined exact figure). Example: a 15-inch screen = 38.1 cm diagonal.
What is the difference between metric tonne and US ton?
Metric tonne = 1,000 kilograms. US short ton = 907.18 kilograms. UK long ton = 1,016 kilograms. Internationally, "tonne" typically means metric.
How many millimeters are in an inch?
1 inch = exactly 25.4 millimeters. This is a precise international standard established by the 1959 international yard and pound agreement.
Unit Converter — Length, Weight, Temperature & More
Convert between metric (SI) and imperial units instantly. The converter handles length, weight, temperature, speed, area and volume in one place — useful for cooking recipes, travel, engineering and comparing specs across regions.
Most common conversions
- Weight: 1 kg = 2.2046 lbs | 1 stone = 6.35 kg
- Length: 1 mile = 1.6093 km | 1 foot = 30.48 cm | 1 inch = 2.54 cm
- Temperature: °F = (°C × 9/5) + 32 | 0°C = 32°F | 100°C = 212°F
- Volume: 1 US gallon = 3.785 L | 1 UK gallon = 4.546 L
Metric vs. imperial around the world
Only three countries officially use the imperial system: the United States, Liberia and Myanmar. The UK uses a mix — metric officially but miles for road distances and stone/pounds for body weight in everyday use. The Middle East uses metric throughout.