Ounces to Grams Converter (oz to g)
Convert ounces to grams instantly. 1 oz = 28.35 g. Includes the formula, a full conversion table and a calculator that works offline.
The formula
To convert ounces to grams, multiply by 28.35:
g = oz × 28.35Going the other way, divide instead — or multiply by 0.0353, which is the same thing:
oz = g × 0.0353Ounces to Grams conversion table
| Ounces | Grams |
|---|---|
| 1 oz | 28.35 g |
| 2 oz | 56.699 g |
| 3 oz | 85.049 g |
| 4 oz | 113.4 g |
| 5 oz | 141.75 g |
| 6 oz | 170.1 g |
| 7 oz | 198.45 g |
| 8 oz | 226.8 g |
| 9 oz | 255.15 g |
| 10 oz | 283.5 g |
| 15 oz | 425.24 g |
| 20 oz | 566.99 g |
| 25 oz | 708.74 g |
| 30 oz | 850.49 g |
| 40 oz | 1,133.98 g |
| 50 oz | 1,417.48 g |
| 75 oz | 2,126.21 g |
| 100 oz | 2,834.95 g |
| 250 oz | 7,087.38 g |
| 500 oz | 14,174.76 g |
| 1000 oz | 28,349.52 g |
Grams to Ounces
| Grams | Ounces |
|---|---|
| 1 g | 0.0353 oz |
| 2 g | 0.0705 oz |
| 3 g | 0.1058 oz |
| 4 g | 0.1411 oz |
| 5 g | 0.1764 oz |
| 6 g | 0.2116 oz |
| 7 g | 0.2469 oz |
| 8 g | 0.2822 oz |
| 9 g | 0.3175 oz |
| 10 g | 0.3527 oz |
What that actually looks like
A conversion factor is hard to judge on its own. These are quantities most people already have a feel for, converted for you:
- A slice of bread is about 1 ounce — 28.35 g
- A can of drink is 12 fluid ounces — 340.19 g
- A quarter-pound burger is 4 ounces — 113.4 g
Why both units are still in use
Weight is where the two systems collide most awkwardly. Recipes, gym equipment, baggage allowances and medical charts each pick a side, and they do not agree. Airlines are the common trap: an allowance quoted in kilograms at one end of a journey can be quoted in pounds at the other, and the numbers are close enough to look interchangeable while being more than twice apart.
Mistakes worth avoiding
Pounds and ounces have the same trap: 8 pounds 6 ounces is 8.375 pounds, not 8.6, because an ounce is a sixteenth of a pound. And a stone is 14 pounds, so 11 stone 3 is 157 pounds rather than 113.
The other habit worth breaking is rounding too early. Convert first, round once at the end, and you avoid the drift that turns a small approximation into a visible error by the third calculation.
Doing it in your head
When you only need a rough answer, multiply by 28 — which lands within 1.2 percent of the true value. Ten ounces works out at roughly 280 grams that way, against 283.5 exactly. An estimate is enough for deciding whether something will fit or whether a figure sounds plausible. When the number has to be right — because you are buying, cooking or building to it — use the calculator and let it carry the decimals.
Common questions
How many grams are in one ounce?
One ounce equals 28.35 grams. The calculator above handles any value, including decimals and very large numbers, and updates as you type.
Is this an exact conversion?
Yes — this is an exact defined ratio, not an approximation. The table rounds for readability; the calculator does not.
Does this work offline?
Yes. The conversion runs in your browser with no network request, so it works on a plane, in a basement, or on a phone with no signal once the page has loaded.