Fluid Ounces to Milliliters Converter
Convert fluid ounces to milliliters and back. 1 fluid ounce = 29.5735295625 milliliters exactly.
Tip: Results show up to 8 significant digits. The factors and their sources are listed on the "Where our numbers come from" page.
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Fluid Ounces and Milliliters
One fluid ounce is exactly 29.5735295625 milliliters, and one milliliter is about 0.0338140227018 fluid ounces. The converter works both ways: use the two tabs at the top of the tool to choose the direction.
Quick conversion table
Fluid Ounces to Milliliters
| Fluid Ounces | Milliliters |
|---|---|
| 0.5 fl oz | 14.786765 mL |
| 1 fl oz | 29.57353 mL |
| 2 fl oz | 59.147059 mL |
| 4 fl oz | 118.29412 mL |
| 6 fl oz | 177.44118 mL |
| 8 fl oz | 236.58824 mL |
| 12 fl oz | 354.88235 mL |
| 16 fl oz | 473.17647 mL |
| 20 fl oz | 591.47059 mL |
| 32 fl oz | 946.35295 mL |
| 64 fl oz | 1,892.7059 mL |
| 128 fl oz | 3,785.4118 mL |
Milliliters to Fluid Ounces
| Milliliters | Fluid Ounces |
|---|---|
| 5 mL | 0.16907011 fl oz |
| 10 mL | 0.33814023 fl oz |
| 15 mL | 0.50721034 fl oz |
| 30 mL | 1.0144207 fl oz |
| 50 mL | 1.6907011 fl oz |
| 100 mL | 3.3814023 fl oz |
| 200 mL | 6.7628045 fl oz |
| 250 mL | 8.4535057 fl oz |
| 330 mL | 11.158627 fl oz |
| 355 mL | 12.003978 fl oz |
| 500 mL | 16.907011 fl oz |
| 1,000 mL | 33.814023 fl oz |
Exact factor and source
| Conversion | Value | Basis |
|---|---|---|
| 1 fluid ounce in milliliters | 29.5735295625 | exact. NIST SP 811 (2008), Appendix B.8: 1 fl oz (US) = 1/128 gal = 29.5735295625 mL exactly |
| 1 milliliter in fluid ounces | 0.0338140227018 | rounded to 12 digits. SI Brochure, 9th edition (BIPM 2019): the liter is accepted for use with the SI; 1 L = 1000 mL = 1 dm3 |
How to convert fluid ounces to milliliters
- Step oneTake the number of fluid ounces.
- Step twoMultiply it by 29.5735295625.
- Step threeThe result is the number of milliliters.
- Step fourTo go back, divide by 29.5735295625, or multiply by 0.0338140227018.
Example: 12 fl oz x 29.5735295625 = 354.88235475 mL.
All volume units compared
Each unit written in milliliters, the base unit of this tool. Exact values come straight from the definitions.
| Unit | Symbol | Value in milliliters |
|---|---|---|
| Milliliters | mL | 1 milliliter |
| Liters | L | 1,000 milliliters |
| Fluid ounces | fl oz | 29.5735295625 milliliters |
| Cups | cup | 236.5882365 milliliters |
| Pints | pt | 473.176473 milliliters |
| Quarts | qt | 946.352946 milliliters |
| Gallons | gal | 3,785.411784 milliliters |
What is a fluid ounce?
The US fluid ounce (fl oz) is a measure of volume, exactly 29.5735295625 milliliters; 8 fluid ounces make a US cup. It is not a weight.
What is a milliliter?
A milliliter (mL) is one thousandth of a liter, which equals one cubic centimeter. Medicine doses, small drinks and recipes use milliliters.
What this converter does not do
- Results are rounded for display to 8 significant digits; the stored factor is the exact one.
- It converts US liquid measures (gallon, quart, pint, cup, fluid ounce). UK imperial units of the same names are larger and are not used here.
- It does not convert between a volume and a weight, because that needs the density of the ingredient.
Frequently asked questions
How many milliliters are in a fluid ounce?
1 fluid ounce is exactly 29.5735295625 milliliters. That factor is exact by definition.
How many fluid ounces are in a milliliter?
1 milliliter is about 0.0338140227018 fluid ounces.
How many milliliters are in a 12 fl oz can?
12 US fluid ounces is 354.88235 milliliters.
Where do the factors come from?
Fluid ounces: NIST SP 811 (2008), Appendix B.8: 1 fl oz (US) = 1/128 gal = 29.5735295625 mL exactly. Milliliters: SI Brochure, 9th edition (BIPM 2019): the liter is accepted for use with the SI; 1 L = 1000 mL = 1 dm3.
References
- Fluid Ounces: NIST SP 811 (2008), Appendix B.8: 1 fl oz (US) = 1/128 gal = 29.5735295625 mL exactly
- Milliliters: SI Brochure, 9th edition (BIPM 2019): the liter is accepted for use with the SI; 1 L = 1000 mL = 1 dm3
- NIST Special Publication 811: Guide for the Use of the International System of Units (SI), 2008 edition.
- The International System of Units (SI Brochure), 9th edition, BIPM.