Ounces to Grams Converter

Multiply the number of ounces by 28.349523125, the exact grams in one avoirdupois ounce. So grams = ounces x 28.349523125. For a quick mental estimate, multiplying by 28.35 is close enough for most kitchen and shipping needs.

The converter displays up to six decimals so precise values like 28.349523 g are not hidden behind aggressive rounding. Whole calculations run at full precision first, then only the shown figure is trimmed, so chained conversions stay accurate.

In this tool 1 oz shows as 28.349523 g, 4 oz as 113.398093 g, 8 oz as 226.796185 g, and 16 oz, which is one pound, as 453.59237 g. The reference table repeats several of these for fast lookups.

This converter uses the avoirdupois ounce, the everyday ounce for food, mail and shipping, where 1 oz is 28.349523125 g. A troy ounce, used for gold, silver and other precious metals, is heavier at about 31.1035 g, so do not use this tool for bullion.

Enter each ounce amount and read the grams for your kitchen scale. A 6 oz portion is about 170 g and a 12 oz can is about 340 g. Many cooks round to the nearest whole gram, since scales rarely resolve finer than that.

Yes. The two boxes are bidirectional, so type a gram figure into the right box and the left box shows the equivalent ounces immediately. It is the same math run in reverse.

No. This converts weight ounces to grams, both units of mass. Fluid ounces measure volume, and turning them into grams depends on the density of the liquid, so a fluid-ounce conversion needs a different tool.

It is exact by definition: the international avoirdupois ounce is defined as precisely 28.349523125 grams. Any rounding you see is only in the on-screen display, not in the calculation itself.

No. The conversion runs entirely in your browser, so the weights you enter never leave your device and nothing is uploaded or logged.