Weight Converter
kg, lb, oz, stone, tons, 斤, 两, carats — exact conversion factors from NIST definitions.
Everything is computed locally in your browser — nothing is uploaded.
How to use
- 1
Type a value
Enter any number — kilograms, pounds, stones, whatever you have.
- 2
Pick the unit
Choose the unit your number is in. Everything else updates live.
- 3
Read the results
All supported units at once: metric, imperial, US, and Chinese units.
- 4
Compare with real objects
The converter also suggests the closest objects in our database.
How it works & limits
All conversion factors are exact definitions from NIST Handbook 44 / NIST Special Publication 811: 1 lb = 0.45359237 kg exactly, 1 oz = 1/16 lb, 1 stone = 14 lb, 1 US (short) ton = 2,000 lb. The Chinese market units use 1 jin (斤) = 500 g and 1 liang (两) = 50 g as used in mainland China (a Taiwan jin is 600 g and is outside this tool). 1 carat = 200 mg.
Conversions are computed in your browser with full precision and rounded for display only. Nothing you type is uploaded anywhere.
FAQ
How many pounds is 1 kilogram?
1 kg = 2.2046 lb (2.2046226 lb at full precision, using 1 lb = 0.45359237 kg).
How much is 1 jin (斤) in pounds?
1 jin = 0.5 kg = 1.102 lb. The jin used here is the mainland China market unit of exactly 500 g.
What is the difference between a US ton, a long ton and a metric ton?
A US (short) ton is 2,000 lb (907.18 kg), a British long ton is 2,240 lb (1,016.05 kg), and a metric ton (tonne, t) is 1,000 kg. This converter lists all three separately.
Why do stone results show two numbers?
Body weight in the UK is usually given in stones and pounds (1 st = 14 lb), so the converter shows both the exact decimal and the traditional st + lb split, e.g. 70 kg = 11.02 st = 11 st 0.3 lb.