Convert Gram to Ounce

What this conversion means in practice

Metric recipes and EU packaging list grams; US pantries still reach for ounces. The everyday ounce here is avoirdupois (food and shipping), not the troy ounce used for silver pricing.

Twenty-eight grams is almost exactly one ounce (about 0.99 oz)—why bakers remember “30 g ≈ 1 oz” for rough scaling. Fifty grams of coffee is roughly 1.76 oz on a US scale.

Enter grams from a nutrition panel or lab slip; the factor below is fixed with the pound definition (16 oz per lb).

How to convert gram to ounce

Multiply the gram value by 0.035273990723 to get ounce.

Example: 28 g × 0.035273990723 = 0.987671740242 oz

Gram

Definition: A gram (g) is one-thousandth of a kilogram. It is a small metric mass unit used where kilogram precision would be too coarse.

History and origin: The gram entered modern metrology during the metric reforms of the late 18th century. It became the practical everyday companion unit to the kilogram in labs, food labeling, and retail.

Current use: Grams are common in nutrition labels, cooking, medicine packaging, and chemistry. They are often the bridge unit when moving between small and large metric masses.

Ounce

Definition: The avoirdupois ounce (oz) is 1/16 of a pound, equal to 28.349523125 grams. This is the ounce used for food and general weight in the US customary system.

History and origin: Different ounce definitions existed historically, including the troy ounce used for precious metals. Modern everyday weight conversion uses the avoirdupois ounce standardized with the pound.

Current use: Ounces are common in food packaging, recipes, and shipping. In technical contexts, confirm the ounce type, since precious-metal pricing uses a different standard.

Gram to Ounce conversion table