To convert grams to ounces, divide by 28.349523125 (or multiply by about 0.035274). 100 g is 3.527 oz, 250 g is 8.818 oz, and 1 kg is 35.27 oz.
Recipes from the UK, Europe and Australia, and every nutrition label, use grams. This page turns those into the ounces on a US kitchen scale.
How to use the grams to ounces converter
- Type the value in grams into the box. Decimals are fine.
- The result in ounces updates as you type, along with the working.
- Need the other way? Switch the direction menu, or open the ounces to grams converter.
Formula
An avoirdupois ounce is 1/16 of a pound: 0.45359237 kg ÷ 16 = 28.349523125 g exactly. This is the weight ounce, not the fluid ounce (a volume) or the troy ounce (31.1035 g) used for precious metals.
Worked example
A European recipe uses a 250 g block of butter. How many ounces is that?
- 250 ÷ 28.349523125 = 8.8185.
- Result: 8.82 oz, slightly more than two US sticks (8 oz).
Grams to ounces chart
Common values, rounded to 3 decimal places.
| Grams (g) | Ounces (oz) |
|---|---|
| 1 g | 0.035 oz |
| 5 g | 0.176 oz |
| 10 g | 0.353 oz |
| 15 g | 0.529 oz |
| 18 g | 0.635 oz |
| 20 g | 0.705 oz |
| 25 g | 0.882 oz |
| 28 g | 0.988 oz |
| 30 g | 1.058 oz |
| 50 g | 1.764 oz |
| 100 g | 3.527 oz |
| 113 g | 3.986 oz |
| 125 g | 4.409 oz |
| 150 g | 5.291 oz |
| 200 g | 7.055 oz |
| 250 g | 8.818 oz |
| 300 g | 10.582 oz |
| 454 g | 16.014 oz |
| 500 g | 17.637 oz |
| 1,000 g | 35.274 oz |
Where grams show up
- Baking: grams are precise; flour scooped by the cup can vary by 20% or more.
- Coffee: an espresso dose is usually 18–20 g (0.63–0.71 oz).
- Nutrition labels: protein, sugar and fat are always listed in grams.
- Packages: a "1 lb" box is usually also labeled 454 g.
Grams measure weight, so you can't turn grams into cups without knowing the food's density. The cooking measurement converter explains why.
Quick mental math
Divide by 30 and add about 6%, or multiply by 0.035. 200 g × 0.035 = 7 oz (exact: 7.05).
Related conversions
Going the other way: ounces to grams converter. Related pages: lbs to kg converter, kg to lbs converter, stone to lbs converter. For other units in the same family, use the full weight converter or the cooking measurement converter.
Caveats and assumptions
- These are weight ounces. For fluid ounces (volume), use ounces to ml converter (fl oz to ml).
- Results show up to 10 significant digits; the chart is rounded for reading. Keep full precision for engineering, medical or legal work.
Frequently asked questions
How many ounces is 100 grams?
3.527 oz.
How many ounces are in a kilogram?
35.274 oz (2 lb 3.27 oz).
How many ounces is 1 gram?
About 0.035274 oz.
Can I convert grams to cups?
Only for a specific ingredient. A cup of water is about 237 g, but a cup of flour is about 120–125 g.
Sources
- NIST — SI Units: Mass — kilogram and the exact avoirdupois pound
- NIST SP 811 Appendix B.9 — Conversion factors — ounce (avoirdupois) and troy ounce to gram
- NIST Metric Kitchen — Cooking Measurement Equivalencies — household cup, spoon and fluid-ounce equivalents
This calculator gives estimates for planning and education. Check measurements, local codes, supplier specs and your school's official policy before relying on a result. See our disclaimer and how we build and check calculators.