It's important to note that this is an approximate conversion, as the exact conversion depends on the type of ounce you're using (fluid ounce or avoirdupois ounce).

* Fluid ounce: 1 ml is equal to approximately 0.0338 fluid ounces.

* Avoirdupois ounce: 1 ml is equal to approximately 0.0352 avoirdupois ounces.

For most practical purposes, you can use the general conversion of 0.034 ounces per ml.