Grams to Ounces Converter

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Convert grams to ounces using the exact international factor 1 oz = 28.349523125 g, defined since 1959. The reverse rate works out to 1 g ≈ 0.03527 oz. Useful for translating European cooking recipes (where ingredients are listed in grams) into US measuring cups or for calculating postal weights between metric and US carriers. Browser-local.

Gram (g)
Ounce (oz)

Gram (g) → Ounce (oz)

Quick reference table

Gram (g)Ounce (oz)
1 g0.0353 oz
2 g0.0705 oz
5 g0.1764 oz
10 g0.3527 oz
25 g0.8818 oz
50 g1.7637 oz
100 g3.5274 oz

Glossary

Gram (g)

A gram is one thousandth of a kilogram (1 g = 1000 mg = 0.001 kg). It is the everyday metric unit for cooking ingredients, postal weights, jewellery and small-package retail. One US nickel weighs 5 g; a standard letter envelope tops out at about 30 g for the lowest postage tier.

Ounce (oz)

An ounce (avoirdupois) is one sixteenth of a pound, defined as exactly 28.349523125 g since 1959. It is the dominant unit for US food packaging, beverages, postal letters and personal-care products. One fluid ounce of water at 4 °C weighs almost exactly one avoirdupois ounce — a coincidence that helped the unit survive in modern US recipes.

Metric system (SI)

The metric system is a decimal system of measurement built around the kilogram for mass, the meter for length and the second for time, with multiples and submultiples expressed as powers of ten (milligram, gram, tonne). Adopted in France in 1799 and codified internationally as the International System of Units (SI) in 1960, it is now the official system in nearly every country and the standard in science.

Imperial / US Customary system

The imperial system is the historical English system of weights and measures whose mass units are the ounce, pound, stone and ton (16 oz = 1 lb, 14 lb = 1 stone, 2,000 lb = 1 US short ton). Codified by the British Weights and Measures Act of 1824 and aligned with US Customary by the 1959 international yard-and-pound agreement (1 lb = 0.45359237 kg exactly), it is still used in the United States and the United Kingdom for everyday weights.

Related tools

Ounces to Grams
Convert ounces to grams — exact factor 1 oz = 28.3495 g
Kilograms to Pounds
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Convert weight and mass — mg, g, kg, tonnes, ounces, pounds, stones, US tons