# Ounces to mL Converter

URL: https://speedycalculator.com/calculators/conversion/oz-to-ml/
Last updated: 2026-10-25

> Convert US fluid ounces (US fl oz) to millilitres (mL): 1 US fluid ounce = 29.57353 mL, so multiply by 29.57353 or divide by 0.033814023. Both fields are editable, so you can also type in millilitres and get US fluid ounces back.

## Inputs

- US fluid ounces (US fl oz)

## Results

- Millilitres

## Formula

```
1 US fl oz = 29.57353 mL
1 mL = 0.033814023 US fl oz
mL = US fl oz × 29.57353
```

## Explanation

Multiply U.S. fluid ounces by 29.5735 to get millilitres. Drink cans (12 fl oz ≈ 355 mL) and baby bottles are common examples.

### How to use the Ounces to mL Converter

- Type the number of US fluid ounces into the **US fluid ounces** field. Decimals such as 4 are fine.
- Read the answer in **Millilitres** – it updates as you type, with no button to press.
- To convert the other way, type into **Millilitres** and the US fluid ounces are recalculated.
- Press **Copy results** to copy both values with the page title, or **Copy link** to share this exact conversion.

This page converts only US fl oz ⇄ mL. Need a different unit? Use the general volume converter, where you can choose any “from” and “to” unit.

### How it works

Both units measure volume, so they are always in the same ratio: one US fluid ounce equals 29.57353 millilitres. The calculator multiplies the number of US fluid ounces you type by 29.57353 to give millilitres, and when you type into the millilitres field it divides by the same factor to give US fluid ounces. Because the ratio never changes, doubling the US fluid ounces always doubles the millilitres. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).

### How to convert US fluid ounces to millilitres

- Write down the value in US fluid ounces, for example **8 US fl oz**.
- Multiply by the conversion factor 29.57353 (because 1 US fluid ounce = 29.57353 mL).
- 8 × 29.57353 = **236.58824 mL**.
- To go back from millilitres to US fluid ounces, divide by 29.57353 – or multiply by 0.033814023.

### US fl oz to mL conversion table

US fluid ouncesMillilitresMillilitresUS fluid ounces0.5 US fl oz14.786765 mL1 mL0.033814023 US fl oz1 US fl oz29.57353 mL2 mL0.067628045 US fl oz2 US fl oz59.147059 mL5 mL0.16907011 US fl oz4 US fl oz118.29412 mL10 mL0.33814023 US fl oz6 US fl oz177.44118 mL20 mL0.67628045 US fl oz8 US fl oz236.58824 mL50 mL1.6907011 US fl oz10 US fl oz295.7353 mL100 mL3.3814023 US fl oz12 US fl oz354.88235 mL1,000 mL33.814023 US fl oz16 US fl oz473.17647 mL20 US fl oz591.47059 mL32 US fl oz946.35295 mL64 US fl oz1,892.7059 mL

### What is a US fluid ounce?

The U.S. fluid ounce is 1/128 of a U.S. gallon, about 29.57 mL. It is a unit of volume: a fluid ounce of water weighs about one ounce, but other liquids do not.

### What is a millilitre?

A millilitre is one thousandth of a litre and exactly one cubic centimetre. Medicines, cosmetics, drinks and kitchen measures are labelled in mL.

### Quick mental conversion

For a fast estimate, multiply US fluid ounces by about **30** to get millilitres; the error is about 1.4%. Use the calculator above when you need the exact figure.

### Common mistakes to avoid

Mixing u.s. and uk gallons, pints and fluid ounces, assuming a cup is always 250 ml, and treating volume and weight as interchangeable for anything except water.

## Worked example

Inputs — US fluid ounces: 8 US fl oz.

Results — **Millilitres = 236.5882365 mL**.

## FAQ

**How many mL in 8 oz?**
About 236.6 mL.

**How many mL in a 12 oz can?**
About 355 mL.

**How many millilitres are in one US fluid ounce?**
1 US fl oz = 29.57353 mL.

**How many US fluid ounces are in one millilitre?**
1 mL = 0.033814023 US fl oz.

**How do I convert US fluid ounces to millilitres?**
Multiply the number of US fluid ounces by 29.57353. For example, 8 US fl oz × 29.57353 = 236.58824 mL.

**How do I convert millilitres back to US fluid ounces?**
Divide by 29.57353 (or multiply by 0.033814023), or simply type the value into the millilitres field above.

**What is 10 US fl oz in millilitres?**
10 US fl oz = 295.7353 mL.

**What is 2 US fl oz in millilitres?**
2 US fl oz = 59.147059 mL.

**Is this conversion exact?**
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.

**Can I convert to other units on this page?**
This page converts only between US fluid ounces and millilitres. To pick any volume unit, use the general volume converter linked under Related calculators.

**What formula does the Ounces to mL Converter use?**
1 US fl oz = 29.57353 mL.


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)