# Fluid Ounces to Milliliters

> Convert fluid ounces to milliliters, in US customary or Imperial units. Shows the formula, the substituted working, and a reference table.

**URL:** https://www.calculatoranswers.com/oz-to-ml
**Category:** Conversions

## Quick Answer

Multiply fluid ounces by 29.5735295625 for US customary, or by 28.4130625 for Imperial. For example, 8 US fluid ounces is 236.59 mL.

## Definition

A volume conversion tool that turns fluid ounces into metric milliliters (mL). One US customary fluid ounce is exactly 29.5735295625 milliliters and one Imperial fluid ounce is exactly 28.4130625 milliliters, both following from statutory definitions rather than measurement. A fluid ounce measures volume, so it is not interchangeable with the ounce of mass used on a scale.

## How to Use

1. **Choose the fluid ounce standard** — Select US customary or Imperial. US recipes and drink labels use the US fluid ounce; older British and Commonwealth recipes use the Imperial one.
2. **Enter the volume in fluid ounces** — Type the fluid-ounce figure you want to convert.
3. **Read the milliliter result** — The answer appears with the multiplication substituted, a reverse check, and the standard named.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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