How to convert ounces to grams
- 1 Type a value in the ounces box; the grams appear as you type.
- 2 Or type in the grams box to convert the other way.
- 3 Choose ounces for food or troy ounces for gold and silver.
- 4 Use the conversion table below for common values, or copy the result.
Food ounces and troy ounces
Recipes and food labels use the avoirdupois ounce of 28.35 g. Gold and silver are priced per troy ounce of 31.10 g, about 10% heavier, so a gold price per ounce converts to a higher price per gram than you might expect.
For local gold units, use Tola to Grams. For heavier items, use Lbs to KG, and to go back use Grams to Ounces.
- Use a digital scale in grams for baking; it is more accurate than cups or spoons.
- Ounces on gold coins and bars are always troy ounces.
- For liquids, convert fluid ounces to millilitres, not grams.
Features
Food and troy ounces
Switch to troy ounces for gold, silver and platinum prices.
Recipe chart
Common recipe amounts from a quarter ounce to 100 oz.
Two-way
Type grams to get ounces.
When to use it
Baking from US recipes
8 oz of butter is 226.8 g and 16 oz is 453.6 g, one pound. Oven temperatures in °F? Use Fahrenheit to Celsius.
Gold and silver
Gold is priced per troy ounce: 1 troy ounce is 31.1 g, or 2.67 tola. See Tola to Grams for local units.
Postage
A 12 oz parcel weighs 340.2 g.
Baby formula and food
Bottle sizes are often in fluid ounces, but formula powder is measured in grams by scoop, so read the tin's metric chart rather than converting volume to weight.
Related Unit tasks
Frequently asked questions
How do I convert ounces to grams?
Multiply ounces by 28.3495. 4 oz × 28.3495 = 113.4 g.
How many grams is 1 ounce?
28.35 grams for a normal ounce, or 31.10 grams for a troy ounce.
How many grams is 8 oz?
8 oz is 226.8 g, often rounded to 225 g in recipes.
What is the difference between an ounce and a fluid ounce?
An ounce measures weight; a fluid ounce measures volume. A US fluid ounce is 29.57 ml and a UK fluid ounce is 28.41 ml. Use grams only for weights.
What is a troy ounce?
A unit for precious metals equal to 31.1034768 g, about 10% heavier than an ordinary ounce.
How many ounces in a pound?
16 ounces, so 1 lb is 453.6 g.
Is there a quick way to estimate?
Multiply ounces by 30 and take away 5%. 10 oz × 30 = 300, minus 15 is 285 g; the exact answer is 283.5 g.
How many grams is 16 oz?
16 oz is 453.6 g, exactly one pound.
How many grams is 1/2 oz?
Half an ounce is 14.17 g.
How many grams is 3 oz?
3 oz is 85.05 g, a common portion size for cooked meat in US nutrition advice.
Should I weigh or measure by cups?
Weighing is more accurate. A cup of flour can vary by a fair amount depending on how it is packed, while grams and ounces measure the actual weight, which gives more reliable baking results.
Can I convert ounces of liquid?
Only roughly. Fluid ounces measure volume, so convert them to millilitres instead; for water one fluid ounce weighs close to its millilitre value in grams.
Why does my recipe give both ounces and grams?
Publishers print both so readers anywhere can follow the recipe. The two figures are often rounded differently, so stick to one system throughout a recipe rather than mixing grams and ounces, which keeps the proportions right.
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