Oz to Grams Converter
Weight ounces into grams — recipes, coffee, and postage, exactly.
Type in either field — the other updates instantly.
Oz to Grams chart
| Ounces (weight) | Grams |
|---|---|
| 0.5 oz | 14.17 g |
| 1 oz | 28.35 g |
| 2 oz | 56.7 g |
| 3 oz | 85.05 g |
| 4 oz | 113.4 g |
| 5 oz | 141.75 g |
| 6 oz | 170.1 g |
| 8 oz | 226.8 g |
| 10 oz | 283.5 g |
| 12 oz | 340.19 g |
| 16 oz | 453.59 g |
| 24 oz | 680.39 g |
| 32 oz | 907.18 g |
4 oz = the classic US butter stick; 16 oz = one pound.
How this is calculated
g = oz × 28.349523125 (exact — avoirdupois ounce)
The scale-and-recipe direction: 4 oz of butter is 113.4 g, an 18 g coffee dose is 0.63 oz, a 1 oz letter is 28.35 g. This page converts WEIGHT ounces (avoirdupois). Fluid ounces — the liquid kind on drink cans — are volume; that is a different page, linked below.
The avoirdupois ounce is a sixteenth of the exactly-defined pound: 0.45359237 kg ÷ 16 = 28.349523125 g, exact to the last digit shown. Troy ounces (precious metals, 31.103 g) are a third system this page deliberately excludes.
Ounces to grams is the direction of a metric cook using American recipes, where dry ingredients are frequently given by weight in ounces and everything else by volume in cups. One avoirdupois ounce is 28.3495 g, and the widely used 28 g shortcut is accurate to about 1.2% — fine for a stew, poor for baking, where a 25 g error across a flour quantity changes the texture.
Do not confuse it with the fluid ounce, which measures volume and is a different quantity entirely. "8 oz of flour" and "8 fl oz of flour" are not the same amount, and American recipes are not always careful about the distinction — if a recipe measures dry ingredients in cups elsewhere, an unqualified "oz" is usually weight.
Frequently asked questions
How many grams in 1 oz?
28.35 g (exactly 28.349523125). The kitchen shorthand “about 28” is fine for seasoning, and 30 g is a 5.8% overshoot that shows in baking.
Weight oz vs fluid oz — which is this?
Weight. A fluid ounce is volume (29.57 ml) and only equals a weight ounce for water-like liquids. Flour, sugar, and syrup all break the equivalence — convert them by weight.
What is 8 oz in grams?
226.8 g — half a pound. US recipes love 8 oz cream cheese blocks; that is the 227 g on the metric wrapper of the same product.
Is a troy ounce the same?
No — gold and silver trade in troy ounces of 31.1035 g, about 9.7% heavier. If the context is bullion, the number on this page is the wrong one on purpose.