Ounces to grams converter

grams = ounces × 28.349523125 and ounces = grams ÷ 28.35 (or × 0.03527).

The ounce here is the avoirdupois ounce, 1/16 of a pound, used for food, mail and almost everything else in the US. Example: an 8 oz steak is 8 × 28.35 = 226.8 g.

For a quick estimate, multiply ounces by 30 and subtract a little: 4 oz × 30 = 120, minus about 5% gives 114 g (exact: 113.4 g). Going the other way, divide grams by 28 for a close answer. Recipes from the UK, Australia and Europe list most dry ingredients in grams, so a kitchen scale that switches between ounces and grams saves a lot of conversions. When you need a precise number, enter the value here and choose the decimal places; the copy button copies the bare number.

From grams: 100 g = 3.53 oz, 250 g = 8.82 oz, 500 g = 17.64 oz (1 lb 1.6 oz).

An ounce measures weight; a fluid ounce measures volume. They only match for water and similar liquids. 1 US fl oz is 29.57 mL, and 1 UK fl oz is 28.41 mL. Use the Liquid tab for drinks and liquids:

For dry ingredients measured in cups, weight depends on the ingredient: a cup of flour weighs far less than a cup of sugar. The cups to grams converter uses ingredient densities for that.

Precious metals are priced per troy ounce, which is heavier than a regular ounce: 1 troy oz = 31.1034768 g, about 10% more than 28.35 g. A one-ounce gold coin contains one troy ounce of gold. There are 12 troy ounces in a troy pound, not 16. Choose ozt in the unit list when you work out the metal content of coins or bars.

US postal rates for letters and many small parcels step up by the ounce, while carriers abroad weigh in grams. A standard letter allowance of 1 oz is 28 g; 13 oz is 368.5 g. When a scale shows grams and a rate table shows ounces, convert the weight and round up to the next whole ounce, because partial ounces are usually charged as a full one. All conversions happen in your browser.