Grams to Ounces Converter
Convert grams to ounces instantly. Type any gram value and get the exact oz equivalent. Includes a common weights table, formula, and food and nutrition examples.
Built and maintained by Will Henschell, Data Scientist. Editorial policy.
Ounces (oz)
Need the reverse? Convert ounces to grams →
Common Grams to Ounces Conversions
| grams (g) | ounces (oz) | Note |
|---|---|---|
| 28.35 g | 1 oz | 1 oz |
| 100 g | 3.527 oz | 100 g |
| 113.4 g | 4 oz | ¼ lb (4 oz) |
| 200 g | 7.055 oz | 200 g |
| 226.8 g | 8 oz | ½ lb (8 oz) |
| 250 g | 8.818 oz | 250 g |
| 454 g | 16.01 oz | 1 lb (16 oz) |
| 500 g | 17.637 oz | 500 g |
| 1000 g | 35.274 oz | 1 kg |
The Grams-to-Ounces Formula
To convert grams to ounces, multiply by 0.035274 (or divide by 28.3495). Since 1 avoirdupois ounce = 28.349523125 g exactly, 1 gram = 0.035274 oz. For quick mental math, multiply grams by 0.035 — accurate within 0.8%. Key benchmarks: 28.35 g = 1 oz; 100 g = 3.53 oz; 453.6 g = 1 lb (16 oz); 1 kg = 1,000 g = 35.27 oz.
Reading International Food Labels in Ounces
Food products in the US display weight in both ounces and grams. A 100 g serving = 3.53 oz. A 200 g yogurt cup = 7.05 oz. A 250 g block of cheese = 8.82 oz. Imported European foods often list weight only in grams. When following international recipes, quantities like '200 g flour' or '150 g sugar' translate to roughly 7 oz and 5.3 oz respectively. For meal prep and protein tracking, 100 g of chicken breast = 3.53 oz is a common serving-size reference.
Grams in Nutrition and Supplement Dosing
Nutrition labels worldwide list macronutrients (protein, fat, carbohydrates) and micronutrients in grams or milligrams. Protein intake recommendations are typically stated in grams per kilogram of body weight. Common supplement serving sizes: protein powder 30 g (≈ 1.06 oz) per scoop; creatine 5 g (≈ 0.18 oz) per dose; pre-workout 10–15 g (0.35–0.53 oz). Measuring powders by weight on a scale is more consistent than measuring by tablespoons, since powder density varies.
Frequently Asked Questions
How many ounces is 100 grams?
100 g × 0.035274 = 3.527 oz. 100 grams is approximately 3.5 ounces — a common food portion reference.
How do I convert grams to ounces?
Multiply grams by 0.035274. For a quick estimate, multiply by 0.035. Example: 500 g × 0.035274 = 17.64 oz.
What is 250 grams in ounces?
250 g × 0.035274 = 8.82 oz. 250 grams is a common food package size (butter, cheese, pasta) and equals just under ½ lb.
How many ounces is 1 kilogram?
1 kg = 1,000 g × 0.035274 = 35.27 oz. Since 16 oz = 1 lb, this means 1 kg = 35.27 ÷ 16 = 2.205 lbs — matching the standard kg-to-lbs conversion.