Free Online Mass and Weight Convertor Tool

How to use the weight and mass conversion tool

Select a length unit from the "From" and the "To" dropdown lists. Then enter a value to convert from, and click the "Convert" button.
Tonnes = Metric Tons
Tons = Long Tons

From :
= 1
Calculation based on: (rounded)
1 grams = 1 grams
Rounded to 8 decimals
Choose number of decimals

Mass and Weight Conversion Chart

From To Multiply by
grams (g) grains 15.43
grains (gr) grams 0.0648
ounces (oz) grams 28.349
grams ounces 0.03527
pounds (lb) grams 453.59
grams pounds 0.002205
pounds kilograms 0.45359
kilograms (kg) pounds 2.205
pounds stones 1/14
stones (st) pounds 14
tons (UK ton) kilograms 1016.05
kilograms tons 0.0009842
tons tonnes 1.016
tonnes (t) tons 0.9842

British adaptation of the avoirdupois system:
16 drams/drachms = 1 ounce (oz.)
16 ounces = 1 pound (lb.)
14 pounds = 1 stone (st.)
2 stone = 1 quarter (qtr.)
4 quarter = 1 hundredweight (cwt.)
20 hundredweight = 1 ton (t.)

Metric System:
1,000 grams (g) = 1 Kilogram (kg)
1000 Kilograms = 1 Tonne (t)

weight and Mass Converter Tool: Info and Disclaimer:

The mass and weight conversion tool and charts are not meant for commercial purposes. I've tried to verify all of the numbers, but I can't guarantee that they are 100% correct so I would have appreciated that you contacted me (in the highly unlikely event :) if you should find any errors.