Grams to Ounces Converter

What this tool is used for

• Converting a metric recipe quantity for imperial kitchen scales.
• Reading a metric product weight against an ounce-labelled specification.
• Converting a postage weight for a rate table quoted in ounces.
• Checking a metric portion size against an imperial guideline.
• Comparing packaged weights across markets.

Frequently Asked Questions

Why does the table show 28.35 g as 1.00002 oz?

Because 28.35 is itself rounded. The avoirdupois ounce is exactly 28.349523125 g, which falls out of the pound being defined as exactly 0.45359237 kg and divided into 16. The familiar 28.35 overstates the ounce by about half a milligram.

What is a troy ounce and when do I need it?

Exactly 31.1034768 g, used for gold, silver and platinum. It is 480 grains against the avoirdupois ounce's 437.5, so about 10% heavier. Reading a bullion weight as ordinary ounces overstates the metal by that margin — on a kilo bar, roughly three ounces of error.

Is a troy pound heavier than a normal pound?

No — lighter, which catches almost everyone. A troy pound is 12 troy ounces, so 373.24 g, against the avoirdupois pound's 453.59 g. The troy ounce is heavier and the troy pound lighter, because the two systems disagree about how many ounces make a pound.

Which ounce do recipes mean?

The avoirdupois one shown here, whenever the ingredient is weighed. Liquid recipes often use the fluid ounce, which measures volume and only coincides with weight for water. One fluid ounce of honey weighs about 1.5 oz, so swapping them silently changes the recipe.

Why are milligrams shown as a whole number?

Because they are a scale-up of the gram input, and a gram figure with more than three decimals is finer than kitchen or postal scales resolve. If you genuinely need sub-milligram precision, work from the five-decimal gram value rather than the rounded mg line.

Common errors and gotchas

• Confusing ounces of weight with fluid ounces, which are different quantities sharing a name.
• Using a troy ounce for anything other than precious metals, since it is heavier than the avoirdupois ounce.
• Rounding to a whole ounce in baking, where small absolute errors change the result.
• Reporting a decimal ounce where pounds and ounces are expected.
• Assuming a metric label is exact when it has already been rounded for packaging.