Ounces to Grams converter

How to convert ounces to grams

To convert ounces to grams, use g = oz × 28.3495. For example, 20 oz is 566.99 g. Type any value in the converter above and the result updates instantly.

The Ounces to Grams formula

The conversion is g = oz × 28.3495. One ounce equals 28.3495 g. This conversion is exact: ounce is defined precisely in terms of gram, so the only rounding is in the digits shown.

Ounces to Grams conversion table

Where ounces and grams are used

Ounces are used in cooking, postage and jewelry in countries that follow the imperial or US customary system.

Grams are used for small quantities: ingredients, food labels, letters and precise weighing.

Worked examples

These examples use the formula above, so you can check the converter or do the same by hand:

• 2 oz = 56.699 g
• 8 oz = 226.796 g
• 16 oz = 453.592 g

Converting ounces to grams in your head

As a quick estimate, multiply by 28 (rounded).

Grams to Ounces reference table

For the opposite direction, these values are handy to have at hand:

Common mistakes to avoid

• Pounds and kilograms measure mass, but on labels both are treated as weight; the conversion is the same.
• The ounce here is the avoirdupois ounce (28.35 g). Troy ounces used for gold and silver weigh about 31.1 g.

About this converter

The converter accepts whole numbers, decimals and negative values, gives the result as you type, and uses full precision internally, so what you copy is as accurate as it can be. It runs in your browser: nothing you type is sent to a server, it keeps working offline once the page has loaded, and there is nothing to install.

Need the opposite direction? Use the Grams to Ounces converter.