Weight Converter
Convert a weight between metric and imperial units instantly. Everything runs locally in your browser.
About the Weight Converter
This converter switches a mass between metric and imperial units, including milligrams, grams, kilograms, tonnes, ounces, pounds and stones. Strictly speaking these are units of mass rather than weight, but in everyday use the terms overlap and the tool covers the figures people actually look up.
How to use it
- Type the value you know into its unit field, such as a body mass in kilograms.
- Read the equivalent in pounds, stones or ounces from the other fields.
- Start from any unit you like - entering pounds to get kilograms works exactly the same way.
A frequent use is converting a recipe or shipping weight, for example seeing that 500 g is about 17.6 oz. The pound is defined as exactly 0.45359237 kg, so the kg-to-lb conversion is precise. Note that 1 stone equals 14 pounds, which trips people up. All maths happens locally in your browser and nothing you enter is uploaded.
Frequently asked questions
How many pounds are in a kilogram?
One kilogram equals about 2.20462 pounds. The relationship is exact because a pound is defined as 0.45359237 kg, so dividing 1 by that figure gives the conversion factor.
How do I convert grams to ounces?
Divide grams by 28.3495 to get ounces, or multiply ounces by 28.3495 to get grams. For instance, 100 g is about 3.53 oz.
How many pounds are in a stone?
One stone equals exactly 14 pounds. So 11 stone is 154 pounds, which is roughly 69.85 kilograms.
What is the difference between mass and weight?
Mass measures the amount of matter and stays constant, while weight is the force gravity exerts on that mass. Kilograms and pounds are technically mass units, but this tool uses the common everyday meaning.