Weight Converter

Convert quickly between kilograms, pounds, stones, ounces and tons. Type a value in any field and all the others will update instantly.

Common weight conversions

From To Multiply by
kglb2.20462262185
lbkg0.45359237
kgoz35.27396195
stonekg6.35029318
metric tonkg1000
US short tonkg907.18474

How this weight converter works

We use kilograms (kg) as the internal base unit. Every time you enter a value, it is converted to kg, then from kg to all the other units using exact factors.

Key factors

  • 1 lb = 0.45359237 kg
  • 1 oz = 0.028349523125 kg
  • 1 stone = 6.35029318 kg
  • 1 metric ton = 1000 kg
  • 1 US short ton = 907.18474 kg

FAQ

  • Why so many decimals? We keep NIST-style exactness. Round to 2–3 decimals for everyday use.
  • Which ton should I use? For international/metric use “metric ton”; for US freight use “US short ton”.