All tools
Weight/Mass Converter
Convert between tonnes, kilograms, grams, milligrams, imperial tons, US tons, stones, pounds, and ounces instantly.
Type a value into any field
Metric
t
kg
g
mg
Imperial
long tn
US tn
st
lb
oz
Quick reference
1 kilogram
1 kg · 0.157473 st · 2.204623 lb · 35.273962 oz
1 pound
0.453592 kg · 0.071429 st · 1 lb · 16 oz
1 stone
6.350293 kg · 1 st · 14 lb · 224 oz
1 tonne
1 t · 1,000 kg · 157.473044 st · 2,204.622622 lb · 35,273.96195 oz
How It Works
- Enter a value in any field — Type a weight or mass into any of the nine metric or imperial fields.
- Watch it update everywhere — The moment you type, all eight other fields recalculate instantly. No button needed.
- Start over anytime — Use Clear all to empty every field and begin a new conversion.