US Fluid Ounces to ML Converter

Turn U.S. fluid ounces into milliliters for recipes, bottles, and liquid volume planning.

Enter the U.S. fluid ounces value.

Milliliters

236.5882

US fluid ounces8
Conversion factor1 US fl oz = 29.57353 mL
Formula Formula Assumptions 3 Example Example Sources 1 Last updated Mar 11, 2026
Inputs stay in the browser unless a future feature explicitly tells you otherwise. Use this as an estimate and validate important decisions with a qualified professional.

How to use this oz to ml converter

  1. Enter fluid ounces

    Type the amount into the US fluid ounces field.

  2. Read the result

    The equivalent value in Milliliters appears instantly.

  3. Check against limits

    Compare the mL result to packaging sizes or travel-liquid allowances.

Methodology

How this US fluid ounces to ml converter works

This converter changes U.S. fluid ounces into milliliters using the exact U.S. customary liquid-volume relationship. It is useful for recipes, bottles, nutrition labels, skincare containers, and any situation where U.S. kitchen or packaging units need to be compared with metric measurements.

Formula
milliliters = fluid ounces × 29.5735295625
fluid ounces The U.S. fluid-ounce value you enter
29.5735295625 Exact milliliters per U.S. fluid ounce
Example

8 U.S. fluid ounces × 29.5735295625 = 236.59 mL.

A travel-size shampoo is 3 fl oz. In milliliters: 3 × 29.5735 = 88.72 mL — under the 100 mL carry-on limit.

Assumptions
  • ✓ This page uses U.S. fluid ounces, not Imperial UK fluid ounces.
  • ✓ The result is a volume conversion only; it does not convert weight.
  • ✓ Displayed values are rounded for readability.
Notes
  • Fluid ounces measure volume, not mass.
  • This is useful for drinks, syrups, cosmetics, and recipe scaling.
  • If a label uses UK fluid ounces, the result will differ.
Sources
  1. NIST U.S. customary liquid-volume conversions

Fluid ounces and milliliters in daily life

Fluid ounces are standard on U.S. food labels, beverage containers, and cosmetic packaging, while milliliters are the global metric equivalent used in most other countries. The exact factor is 29.5735295625 mL per U.S. fluid ounce. This conversion appears frequently when adapting recipes for metric measuring tools, checking whether travel toiletries meet airline liquid limits (typically 100 mL), or comparing nutritional serving sizes between U.S. and international product labels.

OZ to ML converter FAQs

Is this using U.S. or UK ounces?

It uses U.S. fluid ounces.

Why is 8 oz close to 236.6 mL?

Because one U.S. cup is 8 U.S. fluid ounces, and one U.S. cup is about 236.59 mL.

Can I use this for weight ounces?

No. This page converts fluid ounces, which measure volume.

Written by Jan Křenek Founder and lead developer
Reviewed by DigitSum Methodology Review Formula verification and QA
Last updated Mar 11, 2026

Use this as an estimate and validate important decisions with a qualified professional.

Inputs stay in the browser unless a future feature explicitly tells you otherwise.