1 ounces to grams
28.35 g
1 oz = 28.35 g.
grams
28.35g
1 oz = 28.35 g
In short
How many grams is 1 ounces?
1 oz = 28.35 g. 1 ounce = 28.349523 grams, so the working is 1 × 28.349523 = 28.35.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 ounce = 28.349523 grams 1 × 28.349523 = 28.35
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (g) | Off by |
|---|---|---|
| Whole number | 28 | −0.34952 |
| 1 decimal | 28.3 | −0.04952 |
| 2 decimals | 28.35 | +0.00048 |
Round trip: take 28.35 g back the other way and you land on 1.0000 oz — a drift of 0.0000 oz. That gap is the rounding, not the conversion.
What 1 oz looks like
1 oz
One avoirdupois ounce is exactly 28.349523125 g, a sixteenth of the 1959 international pound.
Frequently asked questions
What is 1 ounces in grams?
1 ounces is 28.35 grams. 1 ounce = 28.349523 grams, so the working is 1 × 28.349523 = 28.35.
How accurate is 28.35 g?
Rounding to 28.35 g and converting straight back gives 1.0000 oz, a drift of 0.0000 oz from the 1 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
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