Weight Converter
Convert weight and mass between metric and imperial units — milligrams, grams, kilograms, tonnes, ounces, pounds and stone — by entering a value and selecting the units.
Units of weight
Metric weight is based on the gram, with kilograms (1,000 g) and tonnes (1,000,000 g) for larger masses. The imperial and US customary system uses ounces, pounds (16 ounces) and, in the UK, stone (14 pounds).
The link between the systems is the international pound, defined as exactly 0.45359237 kilograms, which is what this converter uses.
Everyday weight conversions
Kilograms to pounds is the most common conversion — useful for body weight, luggage and shipping. Grams to ounces matters in cooking and post, while stone is still widely used for body weight in Britain and Ireland.
Frequently asked questions
How many pounds are in a kilogram?
One kilogram is about 2.20462 pounds. To convert kilograms to pounds, multiply by 2.20462.
How do I convert pounds to stone?
Divide the number of pounds by 14, since one stone equals 14 pounds. Select pounds to stone above to do it instantly.