Convert Grams to Ounces Instantly
Use this Grams to Ounces converter to change any mass from grams (g) into avoirdupois ounces (oz) instantly. Enter a whole number or decimal gram value to see ounces, pounds, kilograms and milligrams, or switch to the reverse converter when your starting measurement is already in ounces.
Convert grams to ounces, reverse ounces to grams, combine grams with extra milligrams, or convert one weight value across several common metric and imperial mass units.
Enter grams to calculate the equivalent mass in ounces and other common weight units.
Decimals are supported, such as 12.5 g or 375.75 g.
Reverse the conversion by multiplying ounces by 28.349523125.
Useful when a measurement is written in grams plus an additional milligram amount.
Enter one mass value and choose its starting unit to convert it into milligrams, grams, kilograms, ounces and pounds.
Converting grams to ounces requires a fixed conversion factor between the metric gram and the avoirdupois ounce. One avoirdupois ounce equals exactly 28.349523125 grams. To convert grams to ounces, divide the number of grams by 28.349523125.
For quick everyday estimates, people sometimes use 28.35 grams per ounce. That rounded factor is usually close enough for cooking, shopping and general comparisons, but the calculator on this page uses the more precise factor so the result remains useful for detailed measurements.
Example: 100 g ÷ 28.349523125 = approximately 3.5274 oz.
Example: 8 oz × 28.349523125 = approximately 226.7962 g.
The gram belongs to the metric system, while the ounce commonly used for body weight, food and many consumer products in the United States is the avoirdupois ounce. The relationship between pounds, ounces and grams is fixed: one pound equals 16 ounces and exactly 453.59237 grams.
The table below shows common gram values converted to ounces, pounds and kilograms. It stays inside the responsive table wrapper on phones and tablets, allowing horizontal scrolling without breaking the mobile layout.
| Grams | Ounces | Pounds | Kilograms |
|---|---|---|---|
| 1 g | 0.03527 oz | 0.002205 lb | 0.001 kg |
| 5 g | 0.17637 oz | 0.011023 lb | 0.005 kg |
| 10 g | 0.35274 oz | 0.022046 lb | 0.01 kg |
| 25 g | 0.88185 oz | 0.055116 lb | 0.025 kg |
| 50 g | 1.76370 oz | 0.110231 lb | 0.05 kg |
| 75 g | 2.64555 oz | 0.165347 lb | 0.075 kg |
| 100 g | 3.52740 oz | 0.220462 lb | 0.1 kg |
| 125 g | 4.40925 oz | 0.275578 lb | 0.125 kg |
| 150 g | 5.29109 oz | 0.330693 lb | 0.15 kg |
| 200 g | 7.05479 oz | 0.440925 lb | 0.2 kg |
| 250 g | 8.81849 oz | 0.551156 lb | 0.25 kg |
| 300 g | 10.58219 oz | 0.661387 lb | 0.3 kg |
| 500 g | 17.63698 oz | 1.102311 lb | 0.5 kg |
| 750 g | 26.45547 oz | 1.653467 lb | 0.75 kg |
| 1,000 g | 35.27396 oz | 2.204623 lb | 1 kg |
| 2,000 g | 70.54792 oz | 4.409245 lb | 2 kg |
50 ÷ 28.349523125 = 1.7637 oz.
100 ÷ 28.349523125 = 3.5274 oz.
250 ÷ 28.349523125 = 8.8185 oz.
500 ÷ 28.349523125 = 17.6370 oz.
The same formula works with decimal gram values. For example, 12.5 g is about 0.4409 oz, 187.5 g is about 6.6139 oz, and 375.25 g is about 13.2364 oz. Keeping extra decimal places is useful when the starting measurement is precise.
The common ounce used in the avoirdupois weight system is tied to the international pound. One international avoirdupois pound is exactly 453.59237 grams, and one pound contains 16 ounces. Dividing 453.59237 by 16 gives exactly 28.349523125 grams per ounce.
For authoritative information about U.S. customary and metric mass relationships, see the NIST guide to SI units of mass and the NIST unit conversion resources.
The figure compares a gram measurement with the equivalent avoirdupois ounce value using the standard conversion relationship.
A grams to ounces conversion is useful whenever metric measurements need to be compared with U.S. customary weight values. Food packaging, recipes, supplements, craft materials, postal items, small products, laboratory samples and household objects may be listed in grams while another reference uses ounces.
For example, a 100 g food portion is about 3.53 oz, a 250 g package is about 8.82 oz, and a 500 g item is about 17.64 oz. Converting the unit makes comparison easier without changing the actual mass.
A gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. An ounce (oz), in the avoirdupois system, is one-sixteenth of a pound. The gram is smaller than the ounce, which is why a gram value typically becomes a smaller number when converted to ounces.
For example, 28.3495 g is approximately 1 oz, while 100 g is approximately 3.5274 oz. Both units describe mass, but they belong to different measurement systems.
Decimal gram values use the same division formula. Divide the gram amount by 28.349523125. For example, 7.5 g is about 0.2646 oz, 42.25 g is about 1.4903 oz and 123.456 g is about 4.3548 oz.
If precision matters, avoid rounding the gram value before conversion. Carry several decimal places through the calculation and round the final ounce result according to the needs of your recipe, project, product specification or technical work.
To reverse the calculation, multiply ounces by 28.349523125. For example, 2 oz is about 56.699 g, 4 oz is about 113.398 g, 8 oz is about 226.796 g and 16 oz is exactly one pound, or 453.59237 g. The orange reverse converter above performs this calculation automatically.
Recipes often switch between grams and ounces, especially when comparing metric recipes with U.S. customary measurements. A digital kitchen scale that displays grams can provide very precise ingredient quantities, while some recipes list food weight in ounces.
Common examples include 50 g ≈ 1.76 oz, 100 g ≈ 3.53 oz, 200 g ≈ 7.05 oz and 250 g ≈ 8.82 oz. Remember that converting weight does not convert volume. Grams to ounces is a mass conversion, while cups, tablespoons and fluid ounces involve volume and depend on the ingredient.
Nutrition labels and packaged foods often list serving sizes in grams. If you are comparing a metric serving to an ounce-based portion, converting grams to ounces can make the amount easier to understand. A 30 g serving is about 1.058 oz, 85 g is about 2.998 oz and 170 g is about 5.996 oz.
For dietary or medical decisions, always use the serving amount and nutrition information provided on the actual product label rather than assuming two similarly named products have identical density or nutrition values.
Metric mass units follow powers of ten: 1,000 milligrams equal 1 gram and 1,000 grams equal 1 kilogram. In the avoirdupois system, 16 ounces equal 1 pound. Since one pound equals exactly 453.59237 grams, one kilogram is approximately 2.20462 pounds or 35.27396 ounces.
28 g is a rough estimate. The precise avoirdupois factor is 28.349523125 g per oz.
Ounces measure mass here; fluid ounces measure volume.
Troy ounces are different and are mainly associated with precious metals.
Keep extra precision until the final result when accuracy matters.
Continue converting metric and imperial mass measurements with Ounces to Grams, Grams to Pounds, Grams to Kilograms, Milligrams to Grams, Kilograms to Pounds and Pounds to Kilograms. These related tools are useful when recipes, packaging, shipping information or technical specifications use different mass units.
The practical rule is to divide grams by about 28.35. This produces a close result for everyday use. For higher precision, use 28.349523125, which is the factor used by the calculator on this page.
As a quick sense-check, roughly 28 g is about 1 oz, 57 g is about 2 oz, 113 g is about 4 oz, 227 g is about 8 oz and 454 g is about 16 oz or 1 pound.
Quick answers about grams, ounces and weight conversion.