How many oz in a ml?

Answer 1

There is no conversion possible unless:

1. you change millilitres (a volume) to kilograms (a mass) because ounce is a mass

or

2. you give the thing you are measuring eg: water

This may help:

1 Ounce = 28.3495231 Grams

Answer 2

There are approximately 0.03527396 fluid ounces in 1 milliliter.