In one mL, there is 0.0338 U.S. fluid ounces. To calculate this, you divide 1 by 29.573. To calculate any number of ounces into mL, just divide the number of ounces by 29.573. Below is a quick conversion chart.   1 mL: 1 ÷ 29.573 = 0.0338 fl. oz. 2 mL: 2 ÷ 29.573 = 0.068 fl. oz. 3 mL: 3 ÷ 29.573 = 0.101 fl. oz. 5 mL: 5 ÷ 29.573 = 0.169 fl. oz. 10 mL: 10 ÷ 29.573 = 0.338 fl. oz. 20 mL: 20 ÷ 29.573 = 0.676 fl. oz. 50 mL: 50 ÷ 29.573 = 1.691 fl. oz.