About the Weight Converter
The international pound is defined as exactly 0.45359237 kilograms, so converting between metric and imperial weight is exact. This converter handles everyday units — kilograms, grams, pounds, ounces and stone — as well as metric tonnes and both US and UK tons, which are easy to confuse. Results update as you type and are shown in every unit at once.
How to use the Weight Converter
- Type the weight you want to convert.
- Choose the unit you are converting from and to (for example kg to lb).
- Read the result, or check the table for every unit at once.
- Use the swap button to convert the other way.
The formula behind it
Quick reference
Useful conversions:
- 1 kg ≈ 2.2046 lb; 1 lb ≈ 0.4536 kg.
- 1 oz ≈ 28.35 g; 100 g ≈ 3.53 oz.
- 1 stone = 14 lb ≈ 6.35 kg (used for body weight in the UK and Ireland).
- 1 metric tonne = 1,000 kg ≈ 2,204.6 lb.
US ton vs. UK ton vs. tonne
A US "short" ton is 2,000 lb (907.18 kg). A UK "long" ton is 2,240 lb (1,016.05 kg). A metric tonne is 1,000 kg. Shipping quotes and specifications can use any of the three, so always confirm which one is meant.
Examples
Body weight
70 kg × 2.20462 = 154.32 lb, which is 11 st 0.3 lb.
Baking
250 g of flour ÷ 28.3495 = 8.82 oz.
Frequently asked questions
How do I convert kg to pounds?
Multiply kilograms by 2.20462. For example, 80 kg × 2.20462 = 176.37 lb.
How do I convert stone to kg?
Multiply stone by 6.35029. To include extra pounds, convert them separately (× 0.453592) and add.
Is weight the same as mass?
Strictly, kilograms and pounds measure mass. On Earth the difference does not matter for everyday use, so the terms are used interchangeably.
Sources
About the author: Ahmed Bilal
Ahmed Bilal is the founder of VolexTool and builds and maintains every calculator on the site. Tax rates and thresholds are taken directly from official sources such as GOV.UK, HMRC, the Canada Revenue Agency and the Australian Taxation Office, the formula is shown on every page, and each update must pass more than 600 automated checks before it goes live. Ahmed is not a tax adviser: for decisions about your own situation, speak to a qualified accountant or financial adviser.