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Weight conversion using online weight converter

grams to ounce, ounce to gram, kilogram to pound, pound to kilo, etc.

Weight Conversion

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(Use decimal numbers, not fractions.)

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Common Weight Unit Abbreviations:

ounce = oz
gram = g or gr
milligram = mg
microgram - µg
pound = lb
kilogram or kilos = kg

Which Weight Unit To Use?

Apothecary - for medications
Troy - for precious metals
Avoirdupois - for almost everything else -
these are for "every day" weight measurements

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A concise reference for virtually any subject.


Metric Conversion Questions?

  • Check the unit conversion FAQS

The basic metric unit of mass is the kilogram. It is currently defined as as being equal to the mass of the International Prototype of the Kilogram (IPK), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures in France.

The most common weight units in the U.S. customary system are the pound, ounce, and ton. Although there have been various historical definitions, the pound is currently defined as 0.45359237 kg.


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