Work out millilitre to ounce instantly with clear inputs, formula shown and shareable results.
Converting Millilitres to US fluid ounces is a single multiplication: one mL equals 0.03381402 US fl oz, so the amount is multiplied by that factor. Switching the direction divides by the same factor instead. This factor is an exact definition, not a rounded approximation, so the conversion is precise at any scale. The US fluid ounce is 29.5735295625 mL; the Imperial fluid ounce is 28.4130625 mL, so UK recipes differ slightly.
Millilitres → US fluid ounces
US fl oz = mL × 0.03381402
US fluid ounces → Millilitres
mL = US fl oz ÷ 0.03381402
One mL is 0.03381402 US fl oz. That figure is exact by definition.
Divide by 0.03381402 instead of multiplying — or just switch the direction selector, which does it for you.