Weight Converter

Convert weight between metric and imperial units, from milligrams to tons, including troy ounces for gold and carats for gems.

From

1 kilogram = 2.204622622 pounds

Formula: lb = kg ÷ 0.45359237

The same amount in other units

Unit	Value
Milligram (mg)	1,000,000
Gram (g)	1,000
Kilogram (kg)	1
Metric ton (t)	0.001
Ounce (oz)	35.27396195
Pound (lb)	2.204622622
Stone (st)	0.1574730444
US ton	0.001102311311
Troy ounce (oz t)	32.15074657
Carat (ct)	5,000

Popular conversions

Kilograms, pounds and the units in between

In everyday language, weight means how heavy something is. Scientists call this mass and measure it in kilograms, the base unit of the metric system. Grams and milligrams are used for smaller amounts, and metric tons for very large ones.

The United States uses pounds and ounces. Since 1959 a pound has been exactly 0.45359237 kilograms, and an ounce is one sixteenth of a pound. In the United Kingdom and Ireland, body weight is often given in stone, which is 14 pounds.

Precious metals use their own unit, the troy ounce, which is about 10% heavier than an ordinary ounce. Gemstones are weighed in metric carats of exactly 0.2 grams.

Units in this converter

Milligram (mg): One thousandth of a gram. Used for medicine doses and nutrients such as vitamins.
Gram (g): One thousandth of a kilogram. Used for food, recipes and small items.
Kilogram (kg): The base unit of mass in the metric system (SI). Used for body weight, food and luggage in most of the world.
Metric ton (t): 1,000 kilograms, also called a tonne. Used for heavy goods, vehicles and freight.
Ounce (oz): One sixteenth of a pound, exactly 28.349523125 grams. Used for food portions in the United States.
Pound (lb): Exactly 0.45359237 kilograms, often written lbs. Used for body weight and groceries in the United States.
Stone (st): 14 pounds, about 6.35 kilograms. Used for body weight in the United Kingdom and Ireland.
US ton: 2,000 pounds, exactly 907.18474 kilograms. Also called the short ton and used in the United States.
Troy ounce (oz t): Exactly 31.1034768 grams. The unit used to price gold, silver and other precious metals.
Carat (ct): Exactly 200 milligrams. Used to weigh diamonds and other gemstones. The karat that describes gold purity is a different measure.

Frequently asked questions

How many pounds are in a kilogram?

One kilogram is about 2.20462 pounds (2.2046226218 to be more precise). To go the other way, one pound is exactly 0.45359237 kilograms.

What is a troy ounce?

The troy ounce is the unit used to price gold, silver and platinum. It's exactly 31.1034768 grams, about 10% heavier than the ordinary ounce of 28.35 grams used for food.

What's the difference between a metric ton and a US ton?

A metric ton (tonne) is 1,000 kilograms. A US ton, also called a short ton, is 2,000 pounds, about 907 kilograms. The UK long ton of 2,240 pounds, about 1,016 kilograms, is rarely used today.