How do I convert ml to oz?
Type either value and the other one updates as you type.
- Fluid ounces (fl oz)
- 0.033814
1 mL = 0.033814 fl oz.
Fluid ounces (fl oz): 0.033814. 1 mL = 0.033814 fl oz.
Fluid ounces (fl oz) by milliliters (mL)
How to calculate
Converts milliliters (mL) to fluid ounces (fl oz) and back, with the exact unit definitions.
Example with the default inputs (Milliliters (mL) 1): 1 mL = 0.033814 fl oz.
Formula: fl oz = mL × 0.0338140227018
- 1 milliliter = 0.0338140227018 fluid ounces, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Ounces here are US fluid ounces, a volume. An ounce of weight (1/16 lb) is a different unit.
- The answer shows at most 6 decimal places; the calculation keeps full precision.
Worked examples
Each example is checked against the calculator on every build.
- Milliliters (mL) 1 gives Fluid ounces (fl oz) 0.033814.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Milliliters (mL) 250 gives Fluid ounces (fl oz) 8.453506.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Fluid ounces (fl oz) 8.453506 gives Milliliters (mL) 250.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
How many fluid ounces are in a milliliter?
1 milliliter is 0.033814 fluid ounces, from the exact unit definitions (NIST SP 811).
How do I convert ml to oz?
Multiply by 0.033814: fl oz = mL × 0.0338140227018. For example, 1 mL × 0.033814 = 0.033814 fl oz.
How do I convert oz back to ml?
Multiply by 29.57353, or type the fluid ounces into the second box and the converter works it out. 1 fluid ounce is 29.57353 milliliters.
Is an ounce here a weight or a volume?
A volume: the US fluid ounce, 1/8 of a US cup (29.57 mL). An ounce of weight (1/16 lb, 28.35 g) only matches a fluid ounce for water and liquids like it.