Fluid Ounces vs Milliliters
Compare fluid ounces and milliliters side by side, convert in both directions, and see the exact factor - Volume units.
= 29.5735 mL
= 0.033814 fl oz
1 fluid ounce = 29.5735 mL · 1 milliliter = 0.033814 fl oz
The Milliliters is the smaller unit - the same amount has a bigger number when measured in it.
| Fluid Ounces (fl oz) | Milliliters (mL) | Milliliters (mL) | Fluid Ounces (fl oz) |
|---|---|---|---|
| 1 | 29.5735 | 1 | 0.033814 |
| 2 | 59.147 | 2 | 0.067628 |
| 5 | 147.9 | 5 | 0.16907 |
| 10 | 295.7 | 10 | 0.338141 |
| 25 | 739.3 | 25 | 0.845351 |
| 50 | 1,479 | 50 | 1.6907 |
| 100 | 2,957 | 100 | 3.3814 |
| 250 | 7,393 | 250 | 8.4535 |
| 500 | 14,787 | 500 | 16.907 |
| 1000 | 29,574 | 1000 | 33.8141 |
Quick Answer
1 fluid ounce (fl oz) = 29.5735 milliliters (mL), and 1 milliliter = 0.033814 fluid ounces. Fluid Ounces is the larger unit, so the same physical amount needs a bigger number when measured in Milliliters. Convert either way with the live tool below or the dedicated converter pages.
Key Facts
- 1 fluid ounce (fl oz) = 29.5735 mL
- 1 milliliter (mL) = 0.033814 fl oz
- Conversion is exact multiplication - no rounding in the factor
- Table below covers common values in both directions
- Dedicated converters: fl oz→mL and mL→fl oz pages with live tools
Frequently Asked Questions
Which is bigger, a fluid ounce or a milliliter?
One fluid ounce equals 29.5735 mL, and one milliliter equals 0.033814 fl oz. The unit with the larger factor is the physically bigger one.
How do I convert fluid ounces to milliliters?
Multiply by the factor: value in mL = value in fl oz × 29.5735. Example: 5 fl oz = 147.9 mL. Reverse: divide by 29.5735 (or multiply by 0.033814).
Why are fluid ounces and milliliters different?
They are two different units measuring the same physical quantity. A fluid ounce is defined as exactly 29.5735 mL, and a milliliter as exactly 0.033814 fl oz. Because the units differ in size, the number you write down for the same amount depends on which unit you use - the conversion factor itself is exact, with no rounding.
Is there a quick way to convert without a calculator?
Memorize the 1-to factor: 1 fluid ounce ≈ 29.5735 mL. Then multiply. For 2 fl oz that's ≈ 59.147 mL.
Frequently Asked Questions
One fluid ounce equals 29.5735 mL, and one milliliter equals 0.033814 fl oz. The unit with the larger factor is the physically bigger one.
Multiply by the factor: value in mL = value in fl oz × 29.5735. Example: 5 fl oz = 147.9 mL. Reverse: divide by 29.5735 (or multiply by 0.033814).
They are two different units measuring the same physical quantity. A fluid ounce is defined as exactly 29.5735 mL, and a milliliter as exactly 0.033814 fl oz. Because the units differ in size, the number you write down for the same amount depends on which unit you use - the conversion factor itself is exact, with no rounding.
Memorize the 1-to factor: 1 fluid ounce ≈ 29.5735 mL. Then multiply. For 2 fl oz that's ≈ 59.147 mL.