29.6mL
Fluid Ounces to Milliliters
Exact for US and UK fluid ounces, with a table for both.
Tip: you can type “8 oz flour” or “500 ml to oz”.
1 US fluid ounce =
Try:
about ⅔2/3 of a 1.5 fl oz shot
Reading this as US fluid ounces — the most common; check your label.
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For:
Details
Weighs about 29.6 g as
All units
- mL
- 29.6
- L
- 0.0296
- US cup
- 0.125
- US tbsp
- 2
- US tsp
- 6
- US pint
- 0.0625
- US qt
- 0.0313
- US gal
- 0.00781
How we got this
1 US fluid ounce × 29.5735295625 mL/fl oz = 29.57353 mL
1 US fl oz = 29.5735295625 mL (NIST). 1 UK fl oz = 28.4130625 mL (UK Weights and Measures Act 1985).
Density used: water, 1 g/mL. By definition close to 1 g/mL at room temperature. Source: NIST.
Also useful:
Multiply fluid ounces by 29.5735 to get milliliters on a US label, or by 28.4131 on a UK one. These are exact definitions, not rounded estimates. The US figure comes from 231 cubic inches to the gallon. The UK figure comes from the Weights and Measures Act 1985, which fixes the imperial gallon at 4.54609 litres.
Most of what you will convert is American packaging, so the US figure is the one to use for a 12 oz can (354.88 mL) or a 16.9 oz bottle (499.79 mL). If the recipe or label is British and written in imperial units, switch the converter to UK.
Quick answers
- 1 US fl oz
- 29.57 mL
- 1 UK fl oz
- 28.41 mL
Formula
mL = US fl oz × 29.5735295625US fl oz = mL ÷ 29.5735295625mL = UK fl oz × 28.4130625UK fl oz = mL ÷ 28.4130625
Conversion table
| Amount | US fl oz to mL | UK fl oz to mL |
|---|---|---|
| 1 | 29.57 | 28.41 |
| 2 | 59.15 | 56.83 |
| 3 | 88.72 | 85.24 |
| 4 | 118.3 | 113.7 |
| 5 | 147.9 | 142.1 |
| 6 | 177.4 | 170.5 |
| 7 | 207 | 198.9 |
| 8 | 236.6 | 227.3 |
| 9 | 266.2 | 255.7 |
| 10 | 295.7 | 284.1 |
| 12 | 354.9 | 341 |
| 16 | 473.2 | 454.6 |
| 16.9 | 499.8 | 480.2 |
| 20 | 591.5 | 568.3 |
| 24 | 709.8 | 681.9 |
| 32 | 946.4 | 909.2 |
| 50 | 1,479 | 1,421 |
| 64 | 1,893 | 1,818 |
| 100 | 2,957 | 2,841 |
Which ounce?
| Ounce | Exactly | Used for |
|---|---|---|
| Ounce (oz) | 28.349523125 g | Food, mail, kitchen scales, the default meaning of a bare “oz”. |
| US fluid ounce (US fl oz) | 29.5735295625 mL | US labels, bottles, cans. 16 of them make a US pint. |
| UK fluid ounce (UK fl oz) | 28.4130625 mL | UK recipes, older imperial labels. 20 of them make a UK pint. |
| Troy ounce (oz t) | 31.1034768 g | Gold, silver, platinum. About 10% heavier than the ounce on your kitchen scale. |
Common amounts
- 8 oz cup 237 mL
- 12 oz can 355 mL
- 16.9 oz bottle 500 mL
- 20 oz bottle 591 mL
- 3.4 oz TSA 100 mL
- 1.7 oz perfume 50 mL
- 8 oz steak 227 g
- 1 oz gold 31.1 g
Questions
How many mL is 8 fl oz?
8 US fl oz is 236.59 mL, which is one US cup. 8 UK fl oz is 227.30 mL.
How do I convert mL to fl oz?
Divide by 29.5735 for US fluid ounces or by 28.4131 for UK ones. As a rough shortcut, 30 mL is just over 1 US fl oz.
Is 3.4 fl oz the same as 100 mL?
Nearly. 3.4 US fl oz is 100.55 mL. Carry-on liquid limits are stated as 3.4 oz in the US and 100 mL elsewhere, and what counts is the size printed on the container, not what is left inside. Check your airport if you are close to the limit.
How many fl oz are in a liter or a gallon?
A liter is 33.81 US fl oz or 35.20 UK fl oz. A US gallon is 128 US fl oz and a UK gallon is 160 UK fl oz.
Does a fluid ounce weigh an ounce?
Only roughly, and only for water. 1 US fl oz of water weighs 29.57 g, which is 1.04 oz. Treat fluid ounces as volume and ounces as weight, and convert through density when you need to cross over.