12 ounces to grams

12 ounces = 340.19428 grams

Rounded to a practical precision: 340.2 g.

ounces

grams

How the calculation works

One ounce is 28.34952 grams, so:

12 oz × 28.34952 = 340.19428 g

Reversing it, 340.19428 grams ÷ 28.34952 returns 12 ounces.

Nearby values

Ounces	Grams
8 oz	226.79619 g
9 oz	255.14571 g
10 oz	283.49523 g
11 oz	311.84475 g
12 oz	340.19428 g
13 oz	368.5438 g
14 oz	396.89332 g
15 oz	425.24285 g
16 oz	453.59237 g

About these units

Ounce (oz) — An ounce is one sixteenth of a pound, about 28.35 grams, used for food portions and postal weights.

Gram (g) — A gram is one thousandth of a kilogram and is the everyday unit for food and small quantities.

Frequently asked questions

How many grams is 12 ounces?

12 ounces is 340.19428 grams.

How do I convert ounces to grams myself?

Multiply by 28.34952. To go back, divide by 28.34952 — or multiply by 0.035274.

Is this figure exact?

The conversion factor between the ounce and the gram is fixed by definition. The figure above is rounded for readability; the converter carries full precision.

Convert other values

Full ounces to grams converter · All weight converters