Grams to Ounces
Convert grams to ounces instantly. Free, fast, no signup.
How to use this tool
- Enter grams in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your ounces and the full breakdown beneath it.
Convert grams to ounces instantly. Free, fast, no signup.
Formula
Ounces = Grams × 0.03527396…
Derived as: 1 g = 1 / 28.349523125 oz ≈ 0.03527396194958041 oz.
How it works
Multiply the number of grams by approximately 0.035274 to get avoirdupois ounces. The factor comes from the exact definition of one ounce as 28.349523125 grams (itself derived from the exact pound definition of 0.45359237 kg divided by 16). Because 1 g is a very small fraction of an ounce, the multiplier is less than 0.04.
Common mistake: Confusing avoirdupois ounces (used for food, postal, and general weight) with troy ounces (used for precious metals, where 1 troy oz = 31.1035 g). Using the troy-ounce factor understates food weights by about 9.7%.
Worked example
Convert 100 grams to ounces
- Start with 100 grams.
- Multiply by 0.03527396194958041: 100 × 0.03527396194958041 = 3.527396…
- Round to four decimal places: 3.5274 oz.
100 grams = 3.5274 ounces
Common mistakes to avoid
- Confusing avoirdupois ounces (28.35 g) with troy ounces (31.1035 g) used for precious metals -- using the wrong factor in a gold transaction can mean a significant price error.
- Dividing by 28 instead of 28.3495, overstating the ounce result by about 1.2% -- noticeable in recipe scaling.
- Multiplying by 28.35 instead of dividing (or multiplying by 0.03527) -- that converts ounces to grams.
Key terms
- Gram (g)
- A metric unit of mass equal to one-thousandth of a kilogram; the base unit for small everyday masses.
- Avoirdupois ounce (oz)
- A unit of mass equal to 1/16 of a pound (≈ 28.3495 g), used for food, postal, and general commercial weight in the US.
- Troy ounce (ozt)
- A unit of mass used exclusively for precious metals, equal to 31.1035 g — heavier than the avoirdupois ounce.
- Reciprocal conversion
- When converting from a larger unit to a smaller one (oz → g) you multiply; going the other way (g → oz) you multiply by the reciprocal, a number less than 1.
Frequently asked questions
- How do I convert grams to ounces?
- Multiply the number of grams by 0.035274 to get ounces.