Conversion factors follow international standard values, and results are rounded to four decimal places. The gallon used is the US gallon (3.785 L), which differs from the UK imperial gallon (4.546 L). The ton is the metric ton (1,000 kg), and the ounce is the weight ounce, not the fluid ounce.

Supported units

Length: meter, centimeter, kilometer, mile, foot, inch, yard.
Weight: kilogram, gram, metric ton, pound, ounce.
Volume: liter, milliliter, US gallon, cubic meter.
Temperature: Celsius (°C), Fahrenheit (°F), Kelvin (K).

Frequently Asked Questions

What's the difference between the pound and metric units?

The pound is an imperial weight unit used mainly in the United States, equal to about 0.454 kilograms. The metric system (kilogram, meter, liter) is officially used across most of the world.

How is temperature calculated in Kelvin?

Kelvin = Celsius + 273.15. It's used mainly in scientific and physics contexts, and its zero point represents the complete absence of thermal energy (absolute zero).