Weight & Mass Converter
Instantly convert between various units of weight and mass, from milligrams to metric tonnes.
How to Use Weight Converter
Convert between kilograms, grams, pounds, ounces, stones, tonnes and carats as you type. The tool uses exact official conversion factors, so common answers come out right.
Enter a Number
Type the value you want to convert.
Pick Both Units
Choose the unit you have and the unit you want.
Read the Answer
The result updates as you type. Use the swap button to convert the other way.
Results
As you type
Accuracy
Exact factors
Swap
One click
Works on
Phone & computer
Price
100% free
Sign-up
Not needed
Weight Converter: Quick Reference
The key numbers and facts in one place.
| 1 kg | 2.2046 lb |
|---|---|
| 1 lb | 453.59 g |
| 1 oz | 28.35 g |
| 1 stone | 6.35 kg |
| 1 tonne | 1,000 kg |
| 1 carat | 0.2 g |
What Can You Use It For?
Popular ways people use Weight Converter.
Body Weight
Convert kg, lb and stone.
Cooking
Grams and ounces in recipes.
Shipping
Parcel weights in kg or lb.
Jewellery
Carats and grams for gold and gems.
Tips for the Best Result
- 1 kg is about 2.2 lb — double it and add 10% for a quick guess.
- UK people often use stones: 1 stone = 14 lb.
- A US ton (2,000 lb) and a UK ton (2,240 lb) are different from a metric tonne (1,000 kg).
Frequently Asked Questions
Quick answers about Weight Converter.
2.20462 lb.
453.59 g (1 lb = 0.45359237 kg exactly).
28.35 g.
6.35 kg (14 lb).
A tonne is 1,000 kg. A US ton is 907 kg; a UK ton is 1,016 kg.
Yes — exact official definitions are used.
Yes.
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