Ounces to Grams Converter
This tool converts imperial weight to metric instantly using the Ounces to Grams Converter. It’s useful when a recipe lists ingredients in ounces, nutrition facts are in grams, or shipping and jewelry specs mix unit systems and you need a precise, side-by-side value.
Enter a number once and the calculator handles the math, letting you verify portions, scale recipes accurately, and compare product weights without reaching for a formula. The goal is quick, reliable unit translation so shopping, cooking, and record-keeping stay consistent and easy to share.
Convert ounces (oz) and grams (g) instantly — accurate kitchen and nutrition conversions made simple.
Enter a weight
Uses the standard (avoirdupois) ounce. For liquids, volume in fluid ounces requires density to convert to grams.
- 1/8 oz3.5 g
- 1/4 oz7.1 g
- 1/2 oz14.2 g
- 1 oz28.3 g
- 2 oz56.7 g
- 4 oz113.4 g
- 8 oz226.8 g
- 16 oz453.6 g
- 5 g0.2 oz
- 10 g0.4 oz
- 15 g0.5 oz
- 28 g1 oz
- 50 g1.8 oz
- 100 g3.5 oz
- 250 g8.8 oz
- 500 g17.6 oz
Ounces to Grams Results
Results interpretation
- Recipe accuracy: rounding to 1 decimal is usually sufficient for home cooking; bakers may prefer 0–1 decimals in ounces or 1–2 in grams.
- Volume vs weight: fluid ounces (fl oz) measure volume, while ounces (oz) here are weight.
- Nutrition labels: small packs often list both grams and ounces—use this tool to verify portions.
How oz ⇄ g conversion works
Formulas, steps, and assumptions
Formulas: g = oz × 28.349523125; oz = g ÷ 28.349523125.
Steps: enter oz or g → select rounding → copy a link with your inputs to share or revisit.
Assumptions: conversions use mass (weight); they are not fluid-ounce volume conversions.
Use cases & examples
Example 1 (spice jar): 2 oz of spice ≈ 56.7 g.
Example 2 (protein portion): 100 g cooked chicken ≈ 3.5 oz.
Example 3 (baking): 1/2 oz yeast ≈ 14.2 g.
Ounces to grams — FAQ
How many grams are in an ounce?
1 avoirdupois ounce equals 28.349523125 grams. For most cooking, 28.35 g is a practical rounded value.
How do I convert grams to ounces?
Divide grams by 28.349523125. Example: 100 g ÷ 28.349523125 ≈ 3.53 oz.
Is this the same as fluid ounces?
No. Ounces here are weight. Fluid ounces measure volume and require density to convert to grams.
What rounding should I use for recipes?
Home cooks typically use 0–1 decimals in ounces and 1–2 decimals in grams. Choose what matches your scale.
Does this work for troy ounces?
No. Troy ounces (used for precious metals) are 31.1034768 g and are not used in recipes.
Why do my results differ slightly from a package label?
Labels often round values for readability. Our conversions compute at full precision and round only for display.
Working with grams and ounces in the kitchen
We built this converter for everyday cooking and baking, where recipes and packaging often mix metric and US units. Converting quickly helps scale recipes, verify serving sizes, and avoid measuring cup guesswork.
Why grams often feel easier
Grams rise in tidy 1-unit steps, which makes scaling precise. If your scale supports both grams and ounces, weigh small amounts in grams and larger items in ounces for convenience.
Common pantry references
- 1 oz ≈ 28.35 g
- 8 oz (half-pound) ≈ 226.8 g
- 16 oz (1 lb) ≈ 453.6 g
Tips for better consistency
For dry ingredients, weigh instead of using cups; densities vary by grind and humidity. For liquids, consider volume measures unless you know the density at room temperature.