Weight

Weight Converter

Convert between milligrams, grams, kilograms, tonnes, ounces, pounds, and stones instantly, with a full equivalents table and comparison chart.

Result

2.2 lb

Equivalent weight

Your value in kilograms, pounds, and ounces.

How it works

Every mass unit relates to the gram. The converter scales your value to grams and then to the target unit, covering both metric and imperial systems.

1 kg = 1000 g = 2.20462 lb
1 lb = 16 oz = 453.592 g · 1 stone = 14 lb

Worked example

One kilogram equals 1 × 2.20462 = 2.2 pounds, or 35.27 ounces.

Weight conversions and body weight chart

The pound is defined as exactly 0.45359237 kg, an ounce is 1/16 of a pound (28.35 g), and a stone, still common for body weight in the UK and Ireland, is 14 pounds (6.35 kg).

Kilograms	Pounds	Stone and pounds
50 kg	110.2 lb	7 st 12.2 lb
60 kg	132.3 lb	9 st 6.3 lb
70 kg	154.3 lb	11 st 0.3 lb
80 kg	176.4 lb	12 st 8.4 lb
90 kg	198.4 lb	14 st 2.4 lb
100 kg	220.5 lb	15 st 10.5 lb

"Ton" means three different things: a US (short) ton is 2,000 lb (907 kg), a UK (long) ton is 2,240 lb (1,016 kg), and a metric tonne is 1,000 kg (2,204.6 lb).

Weight conversion matrix

1 unit	Grams	Kilograms	Ounces	Pounds
1 gram	1	0.001	0.03527	0.002205
1 ounce	28.35	0.02835	1	0.0625
1 pound	453.59	0.4536	16	1
1 kilogram	1,000	1	35.27	2.2046
1 stone	6,350.3	6.350	224	14
1 US ton	907,185	907.2	32,000	2,000
1 metric tonne	1,000,000	1,000	35,274	2,204.6

Specialist weight units

Unit	Equals	Used for
Grain (gr)	64.79891 mg	Bullets, arrows, gunpowder, some medicines
Carat (ct)	200 mg	Gemstones
Troy ounce	31.1035 g	Precious metals
Pennyweight (dwt)	1.555 g (1/20 troy oz)	Jewelry
Hundredweight (US)	100 lb	Agriculture and freight

Quick mental conversions

kg to lb: double it and add 10%. 70 kg → 140 + 14 = 154 lb (exact: 154.3).
lb to kg: halve it and subtract 10%. 180 lb → 90 − 9 = 81 kg (exact: 81.6).
Grams to ounces: divide by 28, or roughly by 30 for a quick estimate.

For small amounts like vitamins, use the mcg to mg converter; for body weight in stones, the chart above lists common values.

Frequently asked questions

How many grams are in a kilogram?

1,000 grams.

How many pounds are in a kilogram?

About 2.20462 lb.

How many grams is a decagram?

10 grams, since "deca" means ten. Decagrams (dag, often written dkg) appear in some central European recipes: 5 dag of butter is 50 g.

How many pounds are in a stone?

14 pounds, which is about 6.35 kg.

Is a tonne the same as a ton?

No. A metric tonne is 1,000 kg; a US ton is 2,000 lb (907 kg) and a UK ton is 2,240 lb (1,016 kg).

How do I convert kg to lbs quickly?

Double the kilograms and add 10%. 80 kg → 160 + 16 = 176 lb, very close to the exact 176.4 lb.

What is a grain in weight?

A grain is 64.79891 milligrams. There are 7,000 grains in a pound, and it is still used for bullets, arrows and gunpowder.

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