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Grams to ounces converter

Convert grams to ounces (and back) with the exact 28.349523 factor — recipes, postage, and portions, plus the troy-ounce trap explained.

1 g = 0.035273962 oz

1 g = 0.035273962 oz · multiply by 0.035273962

Conversions run instantly on your device — nothing is sent anywhere.

Maintained by ToolsNexus

Convert grams to ounces — and back — using the exact avoirdupois definition (1 oz = 28.349523125 g). Loads with g → oz preselected. (Buying gold? Read the troy-ounce FAQ first — it’s a different ounce.)

The formula

ounces = grams ÷ 28.349523125 · grams = ounces × 28.349523125. Kitchen approximation: call it 28 and you’re 1.2% light; call it 30 and you’re 5.8% heavy — for baking, use the real number.

Common values

grams ounces grams ounces
10 0.35 125 4.41
25 0.88 250 8.82
28.35 1.00 454 16.01 (≈1 lb)
50 1.76 500 17.64
100 3.53 1,000 35.27

Recipes, postage, portions

Cooking is the main event: European and Asian recipes weigh in grams, US recipes in ounces and cups — and ounces here means weight ounces, not the fluid ounces on your measuring jug (those are volume; see the liters to gallons converter family for liquids). Postage: international mail tiers step in grams (a 100 g letter is a 3.5 oz letter). Nutrition: a “4 oz serving” of protein is 113 g. And bullion is the trap — troy ounces, 31.103 g, covered in the FAQ. For whole-body weights, step up to the kg to lbs converter.

Private by design

Everything runs on your device as you type — no requests, no logs. Six categories and 46 units live in the unit converter.

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Frequently asked questions

What is the exact grams to ounces formula?
Divide grams by 28.349523125 — the exact avoirdupois ounce, which is 1/16 of the legally defined 453.59237 g pound. So 100 g = 3.5274 oz. Reverse: ounces × 28.349523125 = grams. Recipe shorthand of "28 g per ounce" runs 1.2% light.
How many ounces is 100 grams? And 250 grams?
100 g = 3.53 oz; 250 g = 8.82 oz (a generous US cup of flour weighs about 120–125 g = 4.2–4.4 oz, but flour should be weighed, not scooped). 500 g = 17.64 oz = 1.1 lb.
Why is a "gold ounce" heavier than a kitchen ounce?
Precious metals trade in TROY ounces: 31.1034768 g exactly — about 9.7% heavier than the 28.35 g avoirdupois ounce this converter uses. A "1 oz" gold coin weighs 31.1 g on a kitchen scale. If you are converting bullion, use 31.1035; for food, postage, and body-care products, 28.3495 is the right factor.
Should I bake by grams or ounces?
Grams, if you can — most scales resolve to 1 g but only to 1/8 oz (3.5 g), and gram recipes avoid the fraction arithmetic that causes baking errors. This converter is for reading the other system′s recipe, not an argument to cook in both.

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