Convert Ounces to Grams

How to use the Weight Calculator

Enter the weight in ounces and press the "Calculate" button. The calculator instantly converts ounces to grams. To go the other way, use our grams to ounces calculator.

How do you convert ounces to grams?

One avoirdupois ounce is defined as exactly 28.349523125 grams — 28.3495 to four decimal places. To convert ounces to grams, multiply by 28.3495.

Worked example for ounces to grams:
8 ounces in grams is calculated as 8 × 28.3495 ≈ 226.80 g.

What kind of ounce is this?

This calculator uses the avoirdupois ounce — the standard ounce used for everyday weights in the United States and the United Kingdom. It is defined as 1/16 of an avoirdupois pound, or exactly 28.349523125 grams.

There is a different unit, the troy ounce, used for precious metals like gold and silver. A troy ounce equals 31.1035 grams — heavier than the everyday ounce. If you are weighing precious metals, use a troy-ounce conversion instead.

Why do recipes mix ounces and grams?

Most US recipes give weights in ounces (or pounds), while most European, UK, and Australian recipes use grams. Switching between recipes from different traditions, or scaling a recipe up or down precisely, almost always requires converting ounces to grams.

Tip: a kitchen scale is far more accurate than measuring cups, especially for baking. If your recipe is in ounces, weigh in grams (using this calculator to convert) for the most consistent results.

What is the ounces to grams conversion formula?

The formula for converting ounces to grams is:
g = oz × 28.3495

How do I convert grams to ounces?

To convert grams to ounces, divide by 28.3495:
oz = g / 28.3495

Ounces to Grams Conversion Table

This table shows values in Ounces (oz, avoirdupois) and their equivalent values in Grams (g).

Ounces (oz)	Grams (g)
0.5	14.17
1	28.35
2	56.70
3	85.05
4	113.40
5	141.75
6	170.10
7	198.45
8	226.80
10	283.50
12	340.19
16	453.59
24	680.39
32	907.18