What is 15 ml equal how many fl oz?
Depending upon where you are:
In UK: 28.4 ml ≈ 1 fl oz → 15 ml ≈ 15 ÷ 28.41 fl oz ≈ 0.53 fl
oz
In USA: 29.57 ml ≈ 1 fl oz → 15 ml ≈ 15 ÷ 29.57 fl oz ≈ 0.51 fl
oz