Weight Converter
Convert grams, kilograms, tonnes, ounces, pounds and stones with precise factors.
Type the weight you want to convert, select the unit it is in, then choose the target unit. The result and the conversion rate appear instantly.
Every unit is defined relative to grams: 1 kilogram = 1000 g, 1 metric tonne = 1,000,000 g, 1 ounce = 28.349523125 g, 1 pound = 453.59237 g, and 1 stone = 6350.29318 g.
Click the swap button to reverse the conversion, such as switching from pounds to kilograms and back.
Frequently asked questions
How many grams are in a pound?
One pound is exactly 453.59237 grams. The converter uses that exact value for all pound calculations.
What is a stone in pounds?
One stone equals 14 pounds. In grams that is 6350.29318 g, which is the value used here.
Is a metric tonne the same as a US ton?
No. A metric tonne is 1000 kilograms. A US short ton is about 907.185 kg, and an imperial long ton is about 1016.047 kg.