Oz to Grams Converter
Convert between ounces, grams, kilograms, pounds, and stone instantly. Includes a quick reference table and cooking measurement guide.
Weight Converter
oz
1
g
28.3495
1 oz in all units
oz
1
g
28.35
kg
0.028
lbs
0.063
st
0.004
Quick Reference — Ounces to Grams
| Ounces (oz) | Grams (g) |
|---|---|
| 1 oz | 28.35 g |
| 2 oz | 56.7 g |
| 4 oz | 113.4 g |
| 8 oz | 226.8 g |
| 12 oz | 340.2 g |
| 16 oz | 453.6 g |
| 32 oz | 907.2 g |
| 100 oz | 2835 g |
Key Facts
1 oz = 28.3495 grams
16 oz = 1 pound (lb)
1 lb = 453.592 grams
1 kg = 35.274 oz
14 lbs = 1 stone
Ounces and Grams — Understanding the Difference
The ounce (oz) is a unit of weight used primarily in the United States and, to a lesser extent, in the United Kingdom for certain applications such as food labelling and precious metals. One ounce is equal to 28.3495 grams. The gram is the base unit of mass in the metric system and is used universally in science, medicine, and most of the world's everyday commerce.
In the UK, food sold loose — such as deli meats, cheese, and fruit — must by law be labelled in metric units (grams and kilograms). However, many British recipes, particularly older ones, still use ounces. A standard UK recipe might call for 4 oz of butter, which is approximately 113 grams. Many UK kitchen scales display both units for this reason.
For cooking, the most useful conversions to remember are: 1 oz ≈ 28 g, 4 oz ≈ 113 g (a quarter pound), 8 oz ≈ 227 g (half a pound), and 16 oz = 453 g (one pound). A standard 500 g pack of flour is approximately 17.6 oz. When following American recipes in the UK, you will frequently need to convert ounces to grams — this converter makes that instant.