How to use the Weight Converter
- Type the weight you want to convert.
- Choose the unit it is in now.
- Choose the unit you want.
- Read the result and the conversion rate. The reference table shows common values.
Formula used
Result = Value × (kilograms per source unit ÷ kilograms per target unit). 1 pound = 0.45359237 kg, 1 ounce = 0.028349523125 kg and 1 stone = 6.35029318 kg.
Worked example
Here is the Weight Converter worked through with the example values shown above, so you can check each step by hand.
| Inputs | |
|---|---|
| Value | 70 |
| From | Kilogram (kg) |
| To | Pound (lb) |
| Result | |
| Converted value | 154.32358 |
| Conversion rate | 1 kg = 2.2046226 lb |
Quick reference table
Common values converted with the units selected above.
| From | To |
|---|---|
| 1 kg | 2.2046226 lb |
| 5 kg | 11.023113 lb |
| 10 kg | 22.046226 lb |
| 50 kg | 110.23113 lb |
| 100 kg | 220.46226 lb |
| 1,000 kg | 2,204.6226 lb |
Key weight conversions
One pound is exactly 0.45359237 kg and one ounce is exactly 28.349523125 grams. So 1 kg is about 2.2046 pounds, 1 kg is 35.274 ounces and 1 pound is 453.59 grams.
A person who weighs 70 kg weighs 154.32 pounds, or about 11.02 stone. A 23 kg airline baggage allowance is 50.7 pounds.
Quintals and tonnes
A quintal is 100 kilograms, and a tonne (metric ton) is 1,000 kilograms, so 10 quintals make one tonne. Crop yields, procurement prices and mandi rates are often quoted per quintal in India, and freight is quoted per tonne.
For example, 25 quintals of wheat is 2,500 kg, which is 2.5 tonnes. Do not confuse the metric tonne with the US short ton or the UK long ton, which are different weights and are not included here.
Mass and weight
In everyday language the two words are used interchangeably, and this calculator does the same. Strictly speaking, mass is how much matter an object contains and weight is the force of gravity on it. The kilogram measures mass, and a kilogram of rice has the same mass everywhere, though its weight on the Moon would be lower.
For shopping, cooking and health this difference does not matter.
Tips for recipes and shopping
Recipes from other countries often list ounces and pounds. Converting to grams is more accurate, especially for baking, where a small error changes the result. Weighing ingredients on a kitchen scale in grams is simpler than using cups.
When you compare prices, convert to the same unit first, for example price per 100 grams, since a pack in ounces and one in grams cannot be compared directly.
Quick reference and what to watch for
The exact definitions are 1 pound = 0.45359237 kg, so 1 kg = 2.20462 lb, and 1 ounce = 28.3495 g. A stone is 14 pounds, about 6.35 kg, and is still used in the UK and Ireland for body weight. A quintal is 100 kg and a tonne is 1,000 kg. Body weight of 70 kg is about 154.3 lb, or 11 stone.
The ounce here is the everyday (avoirdupois) ounce used for food and body weight. Precious metals such as gold are measured in troy ounces, which are about 31.1 g, so do not use this converter for them. Also remember that scales measure mass, and that weight in the strict sense depends on gravity, though in daily use the two words are interchangeable.
Frequently asked questions
How many pounds is 1 kg?
One kilogram is about 2.2046 pounds.
How many grams are in an ounce?
One ounce is exactly 28.349523125 grams, about 28.35 g.
What is a quintal?
A quintal is 100 kilograms. It is widely used in India for crops and bulk goods.
How many kilograms are in a tonne?
A metric tonne is 1,000 kilograms, or 10 quintals.
What is a stone in weight?
A stone is a British unit equal to 14 pounds, about 6.35 kg. It is used mainly for body weight in the UK and Ireland.
How do I convert pounds to kilograms?
Multiply the pounds by 0.45359237. For 154 pounds, that is about 69.85 kg.
How many pounds is 70 kg?
About 154.3 pounds. Multiply kilograms by 2.20462.
This calculator gives estimates for information only. Actual figures from a bank, employer, tax authority or doctor may differ. It is not financial, tax, legal or medical advice.