Converters

Weight Converter

Convert weight and mass between kilograms, grams, milligrams, metric tons, pounds, ounces and stone, with a full conversion table.

Converters · Weight ConverterRuns in your browser

From

2.2046

1 kg = 2.2046 lb

Unit	1 kg =
Milligrams	1,000,000 mg
Grams	1,000 g
Kilograms	1 kg
Metric tons	0.001 t
Ounces	35.274 oz
Pounds	2.2046 lb
Stone	0.157473 st

How to convert a weight

Enter the mass you want to convert; the box starts at 1 with kilograms selected.
Open the From dropdown if your figure is in milligrams, grams, metric tons, ounces, pounds or stone.
The To column defaults to pounds; change it to any of the seven units and the bold figure updates immediately.
Use the arrows button to flip kg → lb into lb → kg, or any other pair, in one click.
Below the result, a table lists the same mass in every unit so you can copy more than one.

Seven units, one base: the gram

All seven options are mass units that the widget expresses in grams before converting. The avoirdupois pound has been defined as exactly 0.45359237 kg since 1959, the ounce is one sixteenth of that pound, and the stone is fourteen pounds. The entry labelled Metric tons is the tonne of 1,000 kg; the US short ton (907.18 kg) and the British long ton (1,016.05 kg) are not in the list.

Unit	Symbol	Grams
Milligrams	mg	0.001
Grams	g	1
Kilograms	kg	1,000
Metric tons	t	1,000,000
Ounces	oz	28.349523125
Pounds	lb	453.59237
Stone	st	6,350.29318

Gram value of each unit as stored by the converter.

Worked examples with the exact factors

2.5 t to pounds: 2.5 × 1,000,000 = 2,500,000 g, and 2,500,000 ÷ 453.59237 = 5,511.5566, shown as 5,511.56.
500 mg to ounces: 0.5 g ÷ 28.349523125 = 0.017637 oz.
75 kg to stone: 75,000 g ÷ 6,350.29318 = 11.8105 st.
A 23 kg airline baggage allowance is 50.7063 lb; a 20 kg gym plate is 44.0925 lb.

Stone comes out as a decimal

British body weights are usually spoken as stone and pounds, but this tool gives decimal stone only. To split 11.8105 st, keep the 11 and multiply the remainder by 14: 0.8105 × 14 = 11.35, so 11 st 11.3 lb. Pounds and ounces work the same way with a factor of 16: 0.56 lb × 16 = 8.96 oz.

If you mainly need the stone-and-pounds form, the kg to stone guide linked from this page lists common body weights already split.

What the rounding rules mean for small masses

Values of 100 or more are printed with two decimals, values from 1 to 100 with four, and values under 1 with six, so 1 lb appears as 0.453592 kg even though the stored factor is 0.45359237.
A result below 0.0000005 is printed as 0: one milligram in metric tons is 0.000000001, which the table cannot show. Scale the input up (1,000 mg) and shift the decimal point.
Large results get digit grouping from your browser locale, so 1 t in grams reads 1,000,000 or 1.000.000 depending on your language settings.

Mass rather than force

Everything here is a unit of mass, which is what a kitchen or bathroom scale reports under normal gravity. The converter does not handle force units such as newtons or pound-force, and it does not know about troy ounces (31.1035 g), which are used for precious metals and are about 10% heavier than the avoirdupois ounce in the list.

Typical reasons to open this converter

Checking a recipe written in ounces against metric kitchen scales (4 oz = 113.3981 g).
Comparing shipping quotes where one carrier bills per kg and another per lb.
Reading medication doses: 0.25 g is 250 mg, and the table shows both at once.
Logging a weight change across units, since the table keeps kg, lb and st side by side.

Frequently asked questions

How do I convert kilograms to pounds?

Multiply the kilogram value by 2.20462 to get pounds. For example, 70 kg × 2.20462 ≈ 154.3 lb. To convert pounds to kilograms, divide by 2.20462.

How many grams are in an ounce?

One ounce equals about 28.35 grams. Multiply ounces by 28.349523 for the exact gram value.

Is the ounce here the weight ounce or the fluid ounce?

The avoirdupois mass ounce of 28.349523125 g. Fluid ounces measure volume and live in the volume converter.

Which ton does the converter use?

The metric tonne of exactly 1,000 kg (2,204.62 lb). US short tons and UK long tons are not available as options.

How do I get stone and pounds rather than decimal stone?

Multiply the decimal part by 14. For 11.8105 st that is 0.8105 × 14 ≈ 11.3 lb, so 11 st 11.3 lb.

Why does 1 pound show as 0.453592 kg and not 0.45359237?

Results under 1 are displayed with six decimals. The exact factor is still used in the calculation, so larger inputs are not affected by the trimmed display.

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