Weight and mass, any unit
Recipes in ounces, body weight in stone or kilos, parcels in pounds, ingredients in grams — weight units differ by country and context, so converting is a daily need. This tool covers milligram, gram, kilogram, tonne, ounce, pound and stone.
How it works
Each unit converts through a base (the kilogram), so results stay precise. Choose your units, enter a value and read the answer. Strictly speaking these are units of mass rather than weight, but in everyday use the words are interchangeable on Earth.
Common conversions
- 1 kg ≈ 2.205 lb
- 1 lb = 16 oz
- 1 stone = 14 lb
- 1 oz ≈ 28.35 g
Frequently asked questions
Mass or weight?
Technically mass, but the everyday meaning is the same here.
Is stone supported?
Yes — handy for body weight in the UK and Ireland.
Is my data private?
Yes — everything is calculated in your browser.