Ounce to Gram Converter
Weight · unit-converter
Convert Ounce to Gram with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Ounce (oz)
To: Gram (g)
About Ounce
The avoirdupois ounce is 1/16 of an avoirdupois pound (about 28.35 g). Cooking and postal weights often use ounces.
About Gram
The gram is one thousandth of a kilogram. Recipes, lab work, and small masses typically use grams.
How to convert ounces to grams
1 ounce is equal to 28.349523125 gram:
1 oz = (28.349523125 g ÷ 1 g) g = 28.349523125 g
Each ounce is defined as 28.349523125 g and each gram as 1 g, so one oz equals 28.349523125 ÷ 1 g = 28.349523125 g.
Let w(oz) be the numeric value of the same mass measured in Ounce (oz), and w(g) the value in Gram (g). Then:
w(g) = w(oz) × (28.349523125 / 1)
Equivalently, divide by how many oz fit into one g (grams per g divided by grams per oz):
w(g) = w(oz) ÷ 0.03527396194958
Or: gram = ounce ÷ 0.03527396194958
Examples
Example #1: Convert 20 oz to gram
20 oz = 20 oz × (28.349523125/1) g = 566.9904625 g
20 oz = 20 oz ÷ 0.03527396194958 = 566.9904625 g
Example #2: Convert 50 oz to gram
50 oz = 50 oz × (28.349523125/1) g = 1417.47615625 g
50 oz = 50 oz ÷ 0.03527396194958 = 1417.47615625 g
Summary
To convert Ounce to Gram, multiply the value in oz by the ratio of grams per oz divided by grams per g. Equivalently: value_g = value_oz × (28.349523125 / 1). Numerically, 1 oz equals 28.349523125 g.
Relationship context
You are converting between imperial / UK (stone, long ton, pound, ounce) (Ounces) and metric (SI) (Grams). Metric mass is decimal from the gram; US and imperial masses use pounds and ounces with fixed definitions relative to the kilogram. The numeric factor used here is 2.834952e+1.
Conversion tables
| Ounce (oz) | Gram (g) |
|---|---|
| 0.1 | 2.8349523125 |
| 1 | 28.349523125 |
| 2 | 56.69904625 |
| 3 | 85.048569375 |
| 4 | 113.3980925 |
| 5 | 141.747615625 |
| 6 | 170.09713875 |
| 7 | 198.446661875 |
| 8 | 226.796185 |
| 9 | 255.145708125 |
| Ounce (oz) | Gram (g) |
|---|---|
| 10 | 283.49523125 |
| 20 | 566.9904625 |
| 30 | 850.48569375 |
| 40 | 1,133.980925 |
| 50 | 1,417.47615625 |
| 60 | 1,700.9713875 |
| 70 | 1,984.46661875 |
| 80 | 2,267.96185 |
| 90 | 2,551.45708125 |
| 100 | 2,834.9523125 |