Converters
Weight & Mass Converter
Enter a value once, pick its unit, and see it converted to every other weight unit β kilograms, pounds, ounces, stones, tons, and more β instantly.
Converted to all weight units
Tip: click any row to make that unit the input.
How It Works
Every unit is converted through the kilogram (kg), the SI unit of mass, using exact internationally defined factors (1 lb = 0.45359237 kg). Type a value, choose the starting unit, and the list updates live.
Example
1 kilogram = 1,000 g = 2.20462 lb = 35.274 oz = 0.157473 stone
Frequently Asked Questions
How do I convert between two specific units?
Enter your value, select the unit it's in from the "From unit" dropdown, and read the result off the row for the unit you want. Clicking a row makes that unit the new input, so you can chain conversions.
How many pounds are in a kilogram?
1 kg = 2.20462 lb, and 1 lb = 0.45359237 kg exactly. An ounce is 1/16 lb β 28.3495 g, and a grain is 1/7000 lb β 64.79891 mg.
What's the difference between a US ton, a UK ton, and a tonne?
A US (short) ton is 2,000 lb β 907.185 kg; a UK (long) ton is 2,240 lb β 1,016.047 kg; a metric tonne is exactly 1,000 kg.
Are the conversion factors exact?
Yes. The avoirdupois pound is defined as 0.45359237 kg exactly, and ounce, grain, stone, and both tons derive from it exactly. Displayed results are rounded for readability.