How to convert fluid ounces to milliliters
To convert fluid ounces to milliliters, multiply by 29.5735295625. A US fluid ounce is about 29.57 mL, a conversion that matters for drinks, medicine, cosmetics and travel liquid limits.
Fluid Ounce to Milliliter conversion table
| Fluid Ounce (fl oz) | Milliliter (mL) |
|---|---|
| 0.1 fl oz | 2.95735295625 mL |
| 0.5 fl oz | 14.7867647813 mL |
| 1 fl oz | 29.5735295625 mL |
| 2 fl oz | 59.147059125 mL |
| 3 fl oz | 88.7205886875 mL |
| 4 fl oz | 118.29411825 mL |
| 5 fl oz | 147.867647813 mL |
| 10 fl oz | 295.735295625 mL |
| 20 fl oz | 591.47059125 mL |
| 25 fl oz | 739.338239063 mL |
| 50 fl oz | 1,478.67647813 mL |
| 100 fl oz | 2,957.35295625 mL |
| 500 fl oz | 14,786.7647813 mL |
| 1,000 fl oz | 29,573.5295625 mL |
About the units
Fluid Ounce (fl oz)
A US fluid ounce is 1/128 of a US gallon, exactly 29.5735295625 mL.
Milliliter (mL)
A milliliter is one thousandth of a liter, equal to one cubic centimeter.
How to use this converter
- Type the number of fluid ounces (fl oz) in the input box.
- The result in milliliters appears instantly — no button needed.
- See the same value in every other volume unit just below.
- Use “Swap units” to convert milliliters back to fluid ounces.
When you’ll use the fluid ounce to milliliter conversion
Airport security limits carry-on liquids to 100 mL containers, and your travel shampoo says 3.4 fl oz. Converting gives about 100.5 mL, which is why that bottle size is so common.
A cocktail recipe from a US website lists 1.5 fl oz of lime juice. Converting gives about 44 mL for a metric jigger.
💡 For a quick estimate in your head, multiply by about 30 (the exact factor is 29.5735295625).
Watch out for these mix-ups
- Using the UK fluid ounce (28.41 mL) with a US label.
- Confusing fluid ounces with ounces of weight.
- Rounding medicine doses instead of using the dosing tool provided.
- Assuming 30 mL is exact when precision matters.
Tips for better results
- Use 30 mL as a quick estimate and the exact factor for anything precise.
- Check whether a product is labelled for the US or UK market.
- Always use the measuring device supplied with medicine.
💡 Practical tip: For medicine, use the syringe or cup supplied with the product rather than converting kitchen measurements.
Frequently asked questions
How many milliliters are in one fluid ounce?
One fluid ounce equals 29.5735295625 milliliters. 29.5735295625 is the exact factor used by this converter.
How do I convert fluid ounces to milliliters?
Multiply the value in fluid ounces by 29.5735295625. To go the other way, multiply milliliters by 0.0338140227018.
What is 10 fl oz in mL?
10 fl oz = 295.735295625 mL. Also, 5 fl oz = 147.867647813 mL and 100 fl oz = 2,957.35295625 mL.
What is the difference between a fluid ounce and a milliliter?
A US fluid ounce is 1/128 of a US gallon, exactly 29.5735295625 mL. A milliliter is one thousandth of a liter, equal to one cubic centimeter.
Is this tool free and private?
Yes — the Fluid Ounce to Milliliter is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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