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Convert ounces to milliliters (fl oz to ml)

To convert ounces to milliliters (fl oz to ml): one US fluid ounce is 29.57353 milliliters, so 8 fl oz is 236.588 ml.

Notice: Not for measuring or calculating medication. Incorrect dosing can cause serious injury. Use the dosing device supplied with the medication and follow the label or the directions of a pharmacist or physician.

In milliliters236.588 ml

Conversion factor Exact by definition. The inch has been exactly 2.54 cm and the pound exactly 0.45359237 kg since the 1959 international yard and pound agreement, so these are not measurements that can drift.
1 US fluid ounce = 29.57352956 milliliters
The other way
1 milliliter = 0.0338140227 US fluid ounces
Working
8 x 29.57352956 = 236.588
8 fl oz in every unit
236.59 ml 0.23659 L 48 tsp 16 tbsp 8 fl oz 1 cup 0.5 pt 0.25 qt 0.0625 gal 0.052042 imp gal 0.008355 cu ft 0.00030945 cu yd 0.00023659 m3
US fluid ounces to milliliters
fl ozml
129.5735
259.1471
5147.868
10295.735
25739.338
501,478.68
1002,957.35

How the Unit Converter works

One US fluid ounce is 29.57352956 milliliters. Both units are defined against the same SI base unit, so the factor is derived from two exact definitions rather than measured. It is exact in principle and does not land on a round number.

Worked through: 8 fl oz x 29.5735296 = 236.588 ml.

Going the other way, one milliliter is 0.0338140227 US fluid ounces.

To convert without a calculator, multiply by 29.57. Rounding that to 30 is within 1.4% for most purposes.

A US fluid ounce is 29.57 ml and an imperial one is 28.41. The imperial is SMALLER, which is the opposite of the gallon and pint relationship and catches people who assume imperial is always bigger.

Precision is worth matching to the input. A measurement given as 1 fl oz carries one or two significant figures, and reporting its conversion to six implies a precision the original never had.

Unit Converter FAQ

How many milliliters are in a US fluid ounce?

29.57353. The factor is derived from the definitions of both units against the same SI base, so it is exact in principle but not a round number.

What is 8 fl oz in milliliters?

236.588 ml. Multiply by 29.57353: 8 fl oz x 29.5735296 = 236.588 ml.

How do I convert milliliters back to US fluid ounces?

Divide by 29.57353, or equivalently multiply by 0.033814023. One milliliter is 0.033814023 US fluid ounces. The two factors are reciprocals, so you only need to remember one of them.

Is there anything to watch out for with this conversion?

A US fluid ounce is 29.57 ml and an imperial one is 28.41. The imperial is SMALLER, which is the opposite of the gallon and pint relationship and catches people who assume imperial is always bigger.

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