grams to oz converter

How to convert grams to ounces

Divide grams by 28.349523125 to get avoirdupois ounces. One hundred grams is 3.527 ounces. A kilogram is 35.274 ounces, which is also 2.205 pounds, and those two statements are the same mass because 16 ounces make the pound used on the kilograms page. If you divide by 28 or by 30 you are estimating. Neither is the defined ounce.

A metric recipe that has to be portioned with a US scale, or a spec in grams that a form wants in ounces. 250 g of flour is 8.818 oz. Postage charts that step in ounces will put 100 g in the 4 oz band because 3.527 rounds up to the next whole ounce on many forms. The converter reports the mass, not the postage band.

Exact formula

Formulaounces = grams ÷ 28.349523125

ounces = grams ÷ 28.349523125 One g is 0.0352739619496 oz. Ten g is 0.352739619496 oz. The worked example below uses that same conversion.

Conversion table

The grams column runs from 1 g (0.0353 oz) through 1000 g (35.274 oz).

Worked example: Grams to Ounces

One hundred grams is 3.527 oz. Postage forms that step in whole ounces will often round that 3.527 up to the next ounce. The converter reports the mass, not the postage band. A 250 g block of butter is 8.818 oz. The check value 28.35 g is about 1 oz, one ounce after ordinary rounding, while the defined ounce is 28.349523125 g. Dividing by 28 or by 30 is a kitchen guess. Grams of oil are not fluid ounces, because density is not a unit factor.

Pitfalls for grams to ounces

• Do not divide by 28.35 if the next step is a legal weight. Use the full factor, then round at the end.
• Grams of a liquid are not fluid ounces unless you know the density. Water is close. Oil is not.
• Troy conversion divides by 31.1034768, not by 28.349523125.
• The ounce symbol oz does not say which ounce. Read the page title.