How to Convert Ounces to Grams

Mass: ounces (oz) ↔ grams (g). Watch out for fluid ounces (volume).

The formula (mass)

1 ounce (mass) = 28.349523125 g (often rounded to 28.35). So:

grams = ounces × 28.35

To go from grams to ounces: ounces = grams ÷ 28.35 (or multiply by ~0.0353).

Examples

• 4 oz ≈ 113.4 g
• 100 g ≈ 3.53 oz
• 1 lb = 16 oz ≈ 453.6 g

Ounces: mass vs volume

“Ounce” can mean weight (oz) or volume (fl oz). This guide is for weight. Fluid ounces convert to milliliters or liters, not grams. On tounits.com, pick “oz” for mass or “fl oz” for volume.

On tounits.com

Type 8 oz or 250 g to convert. Try it.