When you need this conversion
US recipes, cocktail specs, baby bottles, cosmetics and supplements labeled in fluid ounces, when your measuring jug is metric.
Quick reference (US fl oz)
- 0.5 fl oz = 14.7868 mL (1 tablespoon)
- 1 fl oz = 29.5735 mL
- 4 fl oz = 118.294 mL (½ cup)
- 8 fl oz = 236.588 mL (1 cup)
- 12 fl oz = 354.882 mL (a can)
- 16 fl oz = 473.176 mL (a US pint)
Cocktails
Bar specs in ounces convert neatly if you round: 1 oz ≈ 30 mL, ¾ oz ≈ 22 mL, ½ oz ≈ 15 mL. That’s fine for drinks. For baking or medicine, use 29.57 mL.
Common mistakes
Using UK fluid ounces for US recipes. They’re 4% smaller.
Measuring dry ingredients in fluid ounces. Flour and sugar should be weighed. See cups to grams.
For the reverse, use mL to fluid ounces.