oz to ml formula
To convert US fluid ounces to milliliters, multiply the number of US fluid ounces by 29.5735295625. In symbols: mL = fl oz × 29.5735295625.
One US fluid ounce equals 29.5735295625 milliliters, and one milliliter equals 0.0338140227018 US fluid ounces. One US fluid ounce is exactly 1/128 of a US gallon, which is 29.5735295625 ml.
Worked example
Suppose you have 12 US fluid ounces and need the answer in milliliters.
- Write the formula: mL = fl oz × 29.5735295625.
- Put in the number: 12 × 29.5735295625 = 354.8823547.
- Round to suit the job. 354.9 mL is accurate enough for most everyday uses.
So 12 fl oz is 354.8823547 mL. To check, convert back: 354.8823547 mL is 12 fl oz.
Common US fluid ounces to milliliters values
| US fluid ounces (fl oz) | milliliters (mL) |
|---|---|
| 1 | 29.57352956 |
| 2 | 59.14705913 |
| 5 | 147.8676478 |
| 10 | 295.7352956 |
| 20 | 591.4705913 |
| 50 | 1,478.676478 |
| 100 | 2,957.352956 |
Reference points
Some familiar amounts in US fluid ounces, converted to milliliters:
- 1.5 fl oz, a shot of spirits: 44.3603 mL
- 8 fl oz, a US cup: 236.588 mL
- 12 fl oz, a US soda can: 354.882 mL
- 16 fl oz, a US pint: 473.176 mL
Where you will use it
US drink labels, cooking measures and cosmetics are marked in fluid ounces. Bartenders and bakers need milliliters to match metric jiggers and scales.
Quick mental math
Multiply by 30 for a quick answer. The error stays under 2 percent. Rule of thumb: multiply by 30. For 12 fl oz this gives 360 mL against the exact 354.9, an error of 1.4 percent.
Going the other way
Need the reverse? Use the ml to oz converter. For comparison, 1 mL is 0.033814023 fl oz. To compare every volume unit at once, open the volume converter.
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