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ounce (oz) → gram (g)

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Use our free online converter to convert between units instantly. Enter any value in the field above to get accurate results. No signup or download required—all conversions run in your browser. Our calculator uses standard conversion factors for reliability.

0
oz=g
0.01=0.283495
0.1=2.83495
1=28.3495
2=56.699
3=85.0485
5=141.7475
10=283.495
20=566.99
50=1,417.475
100=2,834.95
1000=28,349.5

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Brief explanation: ounce to gram

Kilogram is the base unit of mass in the metric system. Pound ≈ 0.453 kg, ounce = 28.35 g. Ton = 1000 kg. Weight and mass are often used interchangeably in everyday contexts. The metric system (kg, g, mg) is used globally. Pounds and ounces are common in the US and UK. For cooking, grams are precise; for body weight, kg or lb are standard.

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Common conversion examples: ounce to gram

Reference values for quick comparison. Use the converter above for any amount.

  • 1 ounce=28.3495 gram
  • 10 ounce=283.495 gram
  • 100 ounce=2,834.95 gram

About the Units

ounce (oz)

Definition: An ounce (oz) is a unit of mass equal to 1/16 of a pound. One avoirdupois ounce equals approximately 28.35 grams. It is used for small weights in the imperial and US systems.
History: The ounce derives from the Roman uncia (one twelfth). The avoirdupois ounce became standard for commerce. Troy ounces are used for precious metals (1 troy oz ≈ 31.1 g).
Current use: Ounces are used for food portions, postal rates, and beverage sizes in the US. Baby weight and small package weights use ounces. The metric equivalent is grams.

gram (g)

Definition: A gram (g) is a unit of mass equal to one thousandth of a kilogram. There are 1,000 grams in one kilogram. It is the metric unit for small masses like food ingredients and postal items.
History: The gram was introduced with the metric system as 1/1000 of the mass of one liter of water. It provided a convenient scale for recipes, chemistry, and small commercial transactions.
Current use: Grams are used for food nutrition labels, recipes, and postal weights. Jewelry and precious metals are often weighed in grams. Chemistry and pharmacy use grams for precise measurements.

Sources

Conversion factors and unit definitions follow international standards. For authoritative references, see: