Grams to Ounces
An instant grams-to-ounces converter, with the formula and a reference table below.
| Grams | Ounces |
|---|---|
| 1 g | 0.035274 oz |
| 2 g | 0.070548 oz |
| 3 g | 0.105822 oz |
| 5 g | 0.17637 oz |
| 10 g | 0.35274 oz |
| 25 g | 0.881849 oz |
| 50 g | 1.763698 oz |
| 100 g | 3.527396 oz |
How to use
- Enter a value in the Grams field.
- The Ounces figure appears immediately — no button to press.
- Typing in the Ounces field converts back to Grams the same way.
- Use the reference table for the values that come up most often.
Grams to Ounces formula
Converting grams to ounces is a single multiplication by 0.0352739619.
oz = g × 0.0352739619
Why this factor: the gram and the ounce are both defined against the kilogram, so dividing one definition by the other gives 0.0352739619 directly. Both definitions are set out in full below.
To go the other way, divide by 0.0352739619 — or use the Ounces to Grams converter, which is the same calculation reversed.
Worked example
Start with 150 g. Multiply by 0.0352739619 to get 5.291094 oz.
150 g × 0.0352739619 = 5.291094 oz
The converter above does this for any value you type, in either direction.
What is a gram?
A gram is one thousandth of a kilogram, the everyday unit for food and small-object mass.
Definition: Exactly 0.001 kilogram by SI prefix definition.
Where it is used: Nutrition labels, recipes, postal rates, and laboratory weighing.
What is an ounce?
An ounce is one sixteenth of a pound, used for small weights in the US.
Definition: Exactly 28.349523125 grams — one sixteenth of the international avoirdupois pound.
Where it is used: Food packaging, postal weights, and coffee and spice quantities in the US.
Worth knowing: Not the same as a fluid ounce, which measures volume. Also distinct from the troy ounce (31.103 g) used for gold and silver.
Grams vs Ounces
The gram is a metric unit while the ounce is an imperial unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many ounces are in a gram?
One gram equals 0.0352739619 ounces.
What is the formula to convert grams to ounces?
Multiply the number of grams by 0.0352739619. To reverse it, divide by 0.0352739619 instead.
How do I convert ounces back to grams?
Divide by 0.0352739619, which is the same as multiplying by 28.3495231.
How many ounces are in 10 grams?
10 g works out to 0.35274 oz.
Is there anything to watch out for with ounces?
Not the same as a fluid ounce, which measures volume. Also distinct from the troy ounce (31.103 g) used for gold and silver.
How is the gram defined?
Exactly 0.001 kilogram by SI prefix definition.