How many grams is 1 oz?

1 ounce is 28.35 grams using the standard avoirdupois (food) ounce. If you are weighing gold or another precious metal, 1 troy ounce is 31.10 grams instead. For cooking, recipes and postage, use the 28.35 g figure.

Is 1 oz to grams the same for every ingredient?

Yes. An ounce is a unit of weight, so 1 oz is 28.35 grams whether you are weighing flour, sugar, butter or meat. This is different from cups and fluid ounces, which measure volume and do change with the ingredient. If you have a kitchen scale, ounce-to-gram is always exact.

Is 1 oz a weight or a volume?

It is a weight — 1 oz means 28.35 grams. Do not confuse it with 1 fluid ounce (fl oz), which is a volume of about 29.57 ml. Ounces (oz) weigh things; fluid ounces (fl oz) fill things. They are only equal for water, and only approximately.

How many pounds is 1 oz?

1 ounce is 0.0625 pounds, since one pound is 16 ounces (453.59 g). In grams that is 28.35 g. Ounces are the everyday sub-unit of the pound in the US and UK weight system.

How do you convert 1 oz to grams?

Multiply by 28.3495, the grams in one avoirdupois ounce: 1 × 28.3495 = 28.35 g. For a troy ounce (precious metals), multiply by 31.1035 instead, giving 31.10 g.

How much does 1 oz weigh?

One avoirdupois ounce weighs 28.35 grams (0.0625 lb, or 437.5 grains). It is the everyday food ounce — a single serving of nuts, a slice of cheese, or a square of chocolate. A troy ounce, used only for gold and silver, is heavier at 31.10 g.

1 oz in Grams

1 oz in grams is 28.35 grams. For food, cooking and postage the ounce means the avoirdupois ounce, so 1 ounce weighs 28.35 g. One ounce is 28.35 grams — the standard single serving for nuts, cheese or chocolate. Ounces-to-grams is a pure weight conversion — it is the same for flour, sugar, meat or a…

OUNCE CONVERTER

Ounces

Ounce type

Convert to

1 avoirdupois oz =

28.35

Gram

LIVE DIAGRAM

AVOIRDUPOIS (FOOD)

28.35

grams

TROY (PRECIOUS)

31.10

grams

WEIGHT ON A 0–500 g SCALE

100 g

butter stick

½ lb

¾ lb

1 lb

A troy ounce (used for gold and silver) is heavier than a food avoirdupois ounce — here by 2.75 g. For cooking, always use the avoirdupois value on the left.

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1 OZ IN GRAMS

1 OUNCE → GRAMS

1 ounce (avoirdupois — food, standard)	28.35 g	× 28.3495
1 ounce (troy — gold, silver)	31.10 g	× 31.1035

One ounce is 28.35 grams — the standard single serving for nuts, cheese or chocolate. For food, recipes and postage, the ounce means the avoirdupois ounce (28.35 g). The troy ounce (31.10 g) is only used for precious metals.

1 OZ IN OTHER UNITS

GRAMS

28.35 g

KILOGRAMS

0.0283 kg

POUNDS

0.0625 lb

OUNCES

1 oz

GRAINS

437.5 gr

HOW TO USE

1
Enter the number of ounces — this page starts with 1.
2
Leave the type on Avoirdupois for food; switch to Troy only for gold, silver or other precious metals.
3
Choose a target unit — grams, kilograms, pounds, milligrams or troy ounces — and read the result instantly.

GOOD TO KNOW

One ounce is 28.35 grams for any food, because ounces-to-grams is a pure weight conversion: 1 oz of feathers and 1 oz of lead both weigh 28.35 g. What changes between ingredients is volume (cups, fluid ounces), never weight. The troy ounce used for gold is heavier at 31.10 g.

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Last updated: July 28, 2026 · 1 avoirdupois ounce = 28.349523125 g, 1 troy ounce = 31.1034768 g · Verified by the EagleCalculator team · Eagle-eyed accuracy for every calculation.

1 oz in Grams

OUNCE CONVERTER

LIVE DIAGRAM

1 OZ IN GRAMS

1 OZ IN OTHER UNITS

HOW TO USE

GOOD TO KNOW

FREQUENTLY ASKED QUESTIONS

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