Grams to Ounces Converter
1 gram is about 0.035274 ounces. To convert grams to ounces, divide by 28.349523125.
Sources: NIST SP 811, NIST Handbook 44, BIPM SI Brochure Updated
Result
100 g = 3.5274 oz
How to convert grams to ounces
ounces = grams ÷ 28.349523125
1 gram is one thousandth of a kilogram. 1 ounce is 1/16 pound, exactly 28.349523125 grams.
Dividing by 28.349523125 is exact. Written as a multiplication the factor is a repeating decimal, 1 g = 0.03527396194958… oz, so a rounded multiplier such as 0.03527 is slightly off. This converter keeps the exact fraction (1600000/45359237) and rounds only the result it shows.
Worked example: 250 g
- Start with the value in grams: 250 g.
- Divide by 28.349523125, because 1 ounce = 28.349523125 grams: 250 ÷ 28.349523125 = 8.818490487….
- Round to the precision you need: 8.82 oz to two decimals.
Grams and ounces side by side
Grams to ounces chart
Grams from 10 to 1,000 converted to ounces with the exact factor, shown to five significant digits.
| g | oz |
|---|---|
| 10 | 0.35274 |
| 20 | 0.70548 |
| 30 | 1.0582 |
| 40 | 1.411 |
| 50 | 1.7637 |
| 60 | 2.1164 |
| 70 | 2.4692 |
| 80 | 2.8219 |
| 90 | 3.1747 |
| 100 | 3.5274 |
| 110 | 3.8801 |
| 120 | 4.2329 |
| 130 | 4.5856 |
| 140 | 4.9384 |
| 150 | 5.2911 |
| 160 | 5.6438 |
| 170 | 5.9966 |
| 180 | 6.3493 |
| 190 | 6.7021 |
| 200 | 7.0548 |
| 210 | 7.4075 |
| 220 | 7.7603 |
| 230 | 8.113 |
| 240 | 8.4658 |
| 250 | 8.8185 |
| g | oz |
|---|---|
| 260 | 9.1712 |
| 270 | 9.524 |
| 280 | 9.8767 |
| 290 | 10.229 |
| 300 | 10.582 |
| 310 | 10.935 |
| 320 | 11.288 |
| 330 | 11.64 |
| 340 | 11.993 |
| 350 | 12.346 |
| 360 | 12.699 |
| 370 | 13.051 |
| 380 | 13.404 |
| 390 | 13.757 |
| 400 | 14.11 |
| 410 | 14.462 |
| 420 | 14.815 |
| 430 | 15.168 |
| 440 | 15.521 |
| 450 | 15.873 |
| 460 | 16.226 |
| 470 | 16.579 |
| 480 | 16.932 |
| 490 | 17.284 |
| 500 | 17.637 |
| g | oz |
|---|---|
| 510 | 17.99 |
| 520 | 18.342 |
| 530 | 18.695 |
| 540 | 19.048 |
| 550 | 19.401 |
| 560 | 19.753 |
| 570 | 20.106 |
| 580 | 20.459 |
| 590 | 20.812 |
| 600 | 21.164 |
| 610 | 21.517 |
| 620 | 21.87 |
| 630 | 22.223 |
| 640 | 22.575 |
| 650 | 22.928 |
| 660 | 23.281 |
| 670 | 23.634 |
| 680 | 23.986 |
| 690 | 24.339 |
| 700 | 24.692 |
| 710 | 25.045 |
| 720 | 25.397 |
| 730 | 25.75 |
| 740 | 26.103 |
| 750 | 26.455 |
| g | oz |
|---|---|
| 760 | 26.808 |
| 770 | 27.161 |
| 780 | 27.514 |
| 790 | 27.866 |
| 800 | 28.219 |
| 810 | 28.572 |
| 820 | 28.925 |
| 830 | 29.277 |
| 840 | 29.63 |
| 850 | 29.983 |
| 860 | 30.336 |
| 870 | 30.688 |
| 880 | 31.041 |
| 890 | 31.394 |
| 900 | 31.747 |
| 910 | 32.099 |
| 920 | 32.452 |
| 930 | 32.805 |
| 940 | 33.158 |
| 950 | 33.51 |
| 960 | 33.863 |
| 970 | 34.216 |
| 980 | 34.568 |
| 990 | 34.921 |
| 1,000 | 35.274 |
ounces = grams ÷ 28.349523125. Factors: NIST SP 811, NIST Handbook 44, BIPM SI Brochure. unitcheck.net/weight/grams-to-ounces/
Common values
| Grams | Ounces | What it is |
|---|---|---|
| 28.349523125 g | 1 oz | exactly 1 ounce |
| 100 g | 3.5274 oz | |
| 250 g | 8.81849 oz | |
| 453.59237 g | 16 oz | exactly 1 pound (16 oz) |
| 500 g | 17.637 oz | |
| 1000 g | 35.274 oz | 1 kilogram |
Going the other way? Use the Ounces to Grams converter.
Frequently asked questions
How many ounces are in 1 gram?
1 gram is about 0.035274 ounces. 1 gram is one thousandth of a kilogram.
How do I convert grams to ounces?
Divide by 28.349523125: ounces = grams ÷ 28.349523125. For example, 250 g = 8.82 oz.
How many grams are in 1 ounce?
1 ounce is exactly 28.349523125 grams. To go the other way, use the ounces to grams converter.
Is the g to oz conversion exact?
The relationship is exact (1 oz = 28.349523125 g), but 1 ÷ 28.349523125 is a repeating decimal, 0.03527396195…. The converter works with the exact fraction and rounds only the displayed result, so it does not pick up the small error a rounded multiplier would cause.
Sources
- NIST Special Publication 811, Guide for the Use of the International System of Units, Appendix B.8: Factors for Units Listed Alphabetically — exact factors are printed in bold in the NIST table (checked October 12, 2026)
- NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement — US customary units and their exact relationships (checked October 12, 2026)
- BIPM, The International System of Units (SI Brochure), 9th edition — defines the SI units, the prefixes and the units accepted for use with the SI