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Convert Ounce to Gram (oz to gm)

In next fields, kindly type your value in the text box under title [ From: ] to convert from Ounce to gram (oz to gm). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].


Ounce (abbreviation: oz): is a unit of mass used in customary (imperial) systems of measurement in British. It is most popular in the retail sale of groceries in the United States, also in many other matters of domestic and international trade between customary measurement driven countries.

Gram (abbreviation: gm): is a SI (metric) system unit of mass. Where, at the temperature of melting ice, it is the absolute weight of a volume equal to the hundredth part of a metre cube of pure water.

How to Convert Ounces to Grams

Example: How many grams are equivalent to 34.3 Ounces?


1 Ounces = 28.35 grams

34.3 Ounces = Y grams

Assuming Y is the answer, and by criss-cross principle;

Y equals 34.3 times 28.35 over 1

(i.e.) Y = 34.3 * 28.35 / 1 = 972.405 grams

Answer is: 972.405 grams are equivalent to 34.3 Ounces.

Practice Question: Convert the following units into gm:

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 30.03 oz

( ii ) 2.23 oz

( iii ) 2.62 oz

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  • USMA
  • NIST

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