Grams to Ounces
Convert gram to ounce instantly — type a value and read the result, with the exact formula shown.
Reviewed by the CalcCafe editorial team · Last updated 1 July 2026 · How we test our tools
Example
1 g = 0.03527396 oz, 5 g = 0.1763698 oz, 10 g = 0.3527396 oz.
Common conversions: gram to ounce
Quick reference for the g → oz values you are most likely to need, computed with the exact factor the converter above uses. It includes the specific values people most often look up (100 g, 4 g, 6 g, 150 g, 200 g). See also the reverse converter: Ounce to Gram.
| Gram (g) | Ounce (oz) |
|---|
| 1 g | 0.035274 oz |
| 2 g | 0.070548 oz |
| 3 g | 0.105822 oz |
| 4 g | 0.141096 oz |
| 5 g | 0.17637 oz |
| 6 g | 0.211644 oz |
| 10 g | 0.35274 oz |
| 15 g | 0.529109 oz |
| 20 g | 0.705479 oz |
| 25 g | 0.881849 oz |
| 30 g | 1.0582 oz |
| 40 g | 1.411 oz |
| 50 g | 1.7637 oz |
| 60 g | 2.1164 oz |
| 70 g | 2.4692 oz |
| 75 g | 2.6455 oz |
| 80 g | 2.8219 oz |
| 90 g | 3.1747 oz |
| 100 g | 3.5274 oz |
| 150 g | 5.2911 oz |
| 200 g | 7.0548 oz |
| 250 g | 8.8185 oz |
| 500 g | 17.637 oz |
| 1,000 g | 35.274 oz |
Ounce to Gram
| Ounce (oz) | Gram (g) |
|---|
| 1 oz | 28.3495 g |
| 5 oz | 141.7476 g |
| 10 oz | 283.4952 g |
| 50 oz | 1,417.48 g |
| 100 oz | 2,834.95 g |
How it works
Ounce = Gram × 0.03527396. Every value is converted through a single kilogram base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting grams to ounces is one of the most common kitchen and shipping tasks for anyone who works across measurement systems. American and British recipes still list butter, flour, chocolate, and nuts in ounces, while the packaging, scales, and nutrition labels you actually own almost always read in grams. The same gap shows up when you weigh a letter or parcel for postage, portion out coffee, or check whether a piece of jewelry or a gold coin matches its stated weight.
The gram is the everyday metric unit of mass, defined as one-thousandth of a kilogram, the SI base unit. The ounce here is the avoirdupois ounce of the imperial and US customary systems, defined as exactly one-sixteenth of a pound, which itself is fixed at 453.59237 grams. That international agreement makes the relationship precise rather than approximate: one ounce is exactly 28.349523125 grams, so a gram is just under 0.0353 of an ounce.
For quick mental math, treat an ounce as roughly 28 grams, and remember that 100 grams is about 3.5 ounces and a quarter-pound (4 oz) is near 113 grams. A faster trick: divide grams by 28 for a close answer, or by 30 if you only need a rough ceiling. To go the other way, multiply ounces by 28.
- Common precision pitfall: do not confuse the avoirdupois ounce (28.35 g) used for food and post with the troy ounce (31.10 g) used for gold, silver, and other precious metals — they differ by nearly 3 grams, enough to matter on an invoice. Also never mix up the weight ounce with the fluid ounce, which measures volume, not mass.
Frequently asked questions
How do you convert gram to ounce?
Multiply the number of grams by 0.03527396 to get ounces. For example, 1 g = 0.03527396 oz.
What is 1 gram in ounces?
1 gram equals 0.03527396 ounces (1 g = 0.03527396 oz).
How many grams are in 1 ounce?
There are 28.34952 grams in 1 ounce.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many ounces is 100 grams?
100 grams equals about 3.5274 ounces, which rounds to roughly 3.5 oz. A good shortcut is that 100 g is just over three and a half ounces.
How many grams are in a quarter pound?
A quarter pound is 4 ounces, which equals about 113.4 grams (4 × 28.3495). This is why a 'quarter-pounder' patty is often labeled as 113 g.
Is 28 grams exactly one ounce?
No, but it is close. One avoirdupois ounce is exactly 28.349523125 grams, so 28 g is a handy approximation that runs about 1.2% light.
How do I convert grams to ounces without a calculator?
Divide the number of grams by 28 for a close estimate. For example, 250 g ÷ 28 is about 8.9 oz, very near the exact 8.82 oz.
What is 50 grams in ounces?
50 grams equals about 1.7637 ounces, or roughly 1.76 oz. That is just under one and three-quarter ounces.
Why is a gold ounce heavier than a food ounce?
Gold is measured in troy ounces, which equal 31.1035 grams, while food and postage use the avoirdupois ounce of 28.3495 grams. The troy ounce is about 2.75 grams heavier.
How many ounces is 500 grams?
500 grams equals about 17.637 ounces, or roughly 17.6 oz, which is a little over one pound (16 oz).
Is a fluid ounce the same as an ounce of weight?
No. A fluid ounce measures volume, while the weight ounce measures mass, so they only match for water by coincidence. Converting grams to ounces always refers to weight.
Is 30 g equal to 1 oz?
Not exactly; 30 g is slightly more than an ounce. One avoirdupois ounce is 28.3495 g, so 30 g is 30 × 0.03527396 = 1.058 oz, about 6% over. Rounding an ounce to 30 g is a common kitchen shortcut that works fine for most recipes, but on a postal or jewelry scale the difference shows up.
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Sources & references
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