Fluid ounces (fl oz) measure volume - not the same as ounces (oz) by weight.
How Many mL Are in a Fluid Ounce?
Quick explanation
Use this page when a recipe or label is in fluid ounces and you want metric mL output for measuring jugs and prep tools. This is common with bottled ingredients, drink recipes, sauces, and imported labels where the package uses fl oz but your kitchen tools use mL. One US fluid ounce equals about 29.57 mL, so this conversion is useful whenever you want a cleaner metric number for pouring, scaling, or comparing package sizes. It also helps remove the common confusion between fluid ounces, which measure volume, and ounces, which usually measure weight. This page gives the exact mL output plus practical kitchen context, so you can decide when a rounded measuring-jug value is fine and when a more exact number is worth keeping for batch prep, nutrition tracking, repeated recipes, or side-by-side label comparison during shopping and recipe planning work later. For reverse conversion, open mL to fluid ounces.
fl oz to mL
Converted value
29.57 mL
~ 30 mL
Scale preview
Quick equivalents
Quick kitchen estimate. For precise nutrition or production work, verify standards and source measurements.
Calculation steps
How to convert fluid ounces to mL manually
mL = fl oz × 29.5735
This converter uses the US fluid ounce standard.
Practical kitchen shortcut
mL ≈ fl oz × 30 (quick estimate)
Use exact output for precise recipes and packaging checks.
Worked example
Input: 8
8 × 29.5735 = 236.6 mL
Practical: 8 fl oz is about 240 mL as a quick estimate.
About these units
Fluid ounce (fl oz)
Fluid ounces are a volume unit used in US recipe cards, beverage labels, and measuring references. They describe how much space a liquid takes up, not how much it weighs.
- 1 US fl oz ≈ 29.5735 mL.
- fl oz measures volume, not weight.
- This is why fl oz and oz should not be treated as interchangeable.
Millilitre (mL)
mL is a metric volume unit that is easy to read on measuring jugs and useful for repeatable prep. It is often simpler for scaling than staying in fluid-ounce decimals.
- 1000 mL = 1 L.
- mL output is practical for scaling liquids precisely.
- Most metric jugs and prep tools are marked in mL.
Tips
If a conversion looks “off,” check whether you mixed weight (oz) and volume (fl oz).
If you're using cup fractions (1/3, 1/4), check the quick-reference table for common values.
Quick Reference
| fl oz | mL |
|---|---|
| 0.5 | 14.79 |
| 1 | 29.57 |
| 2 | 59.15 |
| 4 | 118.29 |
| 8 | 236.59 |
| 12 | 354.88 |
| 16 | 473.18 |
| 32 | 946.35 |
FAQ
Is fl oz the same as oz?
No. fl oz measures volume, while oz measures weight.
How many mL in 1 fl oz?
1 US fluid ounce is about 29.57 mL.
When is this conversion most useful?
It is useful for US drink and sauce recipes that list fluid ounces.
How many mL are in 8 fl oz?
8 fl oz is about 236.6 mL.
Should I round fluid-ounce conversions?
Light rounding is often fine for cooking; keep exact values for precision-sensitive tasks.
When is fl oz to mL most useful?
It is most useful when a US recipe or bottle label uses fluid ounces but your measuring jug, prep notes, or scaling workflow is metric.