Converters
Weight Converter
Convert between kilograms, pounds, ounces and more.
About the Weight Converter
The Weight Converter handles metric units (milligrams, grams, kilograms and tonnes), imperial units (ounces, pounds and stone) and the three different "tons" people often confuse.
What you can do with the Weight Converter
- Converts both ways: Type in either box and the other one updates as you type.
- Every unit at once: The "In every unit" list shows your value in kg, g, mg, pounds, ounces, stone and all three kinds of ton. Tap one to switch to it.
- One-tap swap: The ⇅ button flips the two units, and the line under the boxes shows the rate for 1 unit.
- Three tons, kept apart: Metric tonne, US short ton and UK long ton are listed separately, so you pick the right one.
Three kinds of ton
"Ton" means different things in different places. A metric tonne is 1,000 kg. A US short ton is 2,000 lb (about 907 kg), and a UK long ton is 2,240 lb (about 1,016 kg). All three are listed separately here so you can pick the one your document actually means.
Pounds, ounces and stone
A pound is defined as exactly 0.45359237 kg, and an ounce is one-sixteenth of a pound, about 28.35 grams. A stone is 14 pounds (about 6.35 kg) and is still commonly used for body weight in the UK and Ireland, so "11 stone" means 154 lb or roughly 69.9 kg.
Mass or weight?
Strictly speaking, kilograms and pounds measure mass, how much matter something contains, while weight is the force of gravity acting on it. In everyday life the two words are used interchangeably, and on Earth the numbers match, so this tool follows everyday use.
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Frequently Asked Questions
How many pounds are in a kilogram?
About 2.2046. A quick estimate: double the kilograms and add 10%, 50 kg is roughly 110 lb.
Is a metric tonne the same as a ton?
Not exactly. A tonne is 1,000 kg, a US ton is about 907 kg and a UK ton is about 1,016 kg. Check which one your source uses.
How many grams are in an ounce?
About 28.35 grams in a standard (avoirdupois) ounce. Precious metals use the troy ounce, which is heavier at about 31.1 grams and isn't included here.
How many kg is 1 pound?
One pound is exactly 0.45359237 kg, or about 453.6 grams. Going the other way, 1 kg is about 2.2046 lb, so 60 kg is about 132.28 lb. Choose pound in the first box and kilogram in the second to see any value.
How many grams are in a tola of gold?
A tola is not one of the units here, but the standard tola is 180 grains, about 11.66 grams. Convert tolas to grams yourself, then type grams here to get ounces or other units.
How many pounds are in a stone?
One stone is exactly 14 pounds, or about 6.35 kg. It is mostly used for body weight in the UK and Ireland. A weight of 60 kg is about 9.45 stone, which you can check by picking kilogram and stone.
How many mg are in a gram?
There are 1,000 milligrams in a gram and 1,000,000 milligrams in a kilogram. So 500 mg is 0.5 g and 250 mg is 0.25 g. Pick milligram and gram to convert any amount, such as the figures printed on supplement or food labels.
How many kg is a quintal?
A quintal is 100 kg, the unit often used in Indian mandis and for crop MSP prices. Quintal is not in the unit list, so multiply by 100 and type the kilograms, which then converts to tonnes, pounds or any other unit shown.
How many ounces are in a pound?
There are exactly 16 ounces in one pound, so half a pound is 8 oz. These are avoirdupois ounces, the kind used for food and parcels. Troy ounces, used to price gold and silver, are a different unit and are not included here.
Is weight in kg the same as mass?
In everyday use, yes. Kilograms and pounds measure mass, and scales show mass by assuming normal Earth gravity. In physics, weight is a force measured in newtons, so 1 kg of mass weighs about 9.81 N on Earth. This tool converts mass units.
Why does the converter show so many decimal places?
Pounds and ounces have exact definitions in kilograms with many digits, such as 0.45359237 kg per pound, so results are rarely round. The list shows up to six decimal places. Round the answer yourself to suit your use, for example to the nearest gram.
Read the guide
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