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Ounces to Milliliters Calculator

This calculator converts US fluid ounces of volume to milliliters using **1 US fluid ounce = 29.5735295625 mL**. A mass ounce is a different unit and is outside this calculator's scope.

Published

Milliliters

Converted volume
29.5735295625 mL
1 US fluid ounce = 29.5735295625 milliliters
fl oz

Results update as you type.

Worked example

ounces: 1

Result: 29.5735295625 mL

Try it →

This calculator converts US fluid ounces of volume to milliliters using 1 US fluid ounce = 29.5735295625 mL. A mass ounce is a different unit and is outside this calculator’s scope.

Formula

mL=US fl oz×29.5735295625\text{mL}=\text{US fl oz}\times29.5735295625

The default 1 US fl oz produces 29.5735295625 mL. The result permits up to 12 decimal places and uses the symbol mL.

Related: the ml to oz converter for the reverse direction, plus the oz to cc converter and milliliters to cups calculator.

Related glossary terms

Fluid ounce

Compare Ounces to Milliliters Calculator with related tools

All comparisons →
ml to oz vs Ounces to Milliliters CalculatorCompare the ml to oz and ounces to milliliters calculators: two exact reverse directions of the same US fluid ounce conversion, and when to pick each.

Frequently asked questions

How many mL are in one US fluid ounce?
One US fluid ounce is 29.5735295625 mL in this calculator.

Sources

  • BIPM-SI-9-3.02

    primary · Jul 9, 2026

    Supports: SI base/derived units, prefixes, coherent dimensional relations, exact defining constants, day and degree accepted with SI; this route applies 1 * 29.5735295625 (exact defined/conventional relationship).

    — v9th edition, version 3.02 (August 2025)

  • NIST-SP811-2008

    primary · Jul 9, 2026

    Supports: US customary/SI conversion factors and precision/significant-digit guidance; this route applies 1 * 29.5735295625 (exact defined/conventional relationship).

    — vNIST SP 811, 2008 edition

  • NIST-HB44-2026

    primary · Jul 9, 2026

    Supports: US customary length, mass, liquid-volume, pressure and exact legal-metrology relationships; this route applies 1 * 29.5735295625 (exact defined/conventional relationship).

    — vNIST Handbook 44, 2026 edition

Related calculators

ml to oz ConverterThis calculator converts milliliters to US fluid ounces. It uses **1 US fluid ounce = 29.5735295625 mL** and does not treat a mass ounce as a fluid ounce.Grams to fl oz ConverterConvert grams to US fluid ounces with explicit ingredient density presets for water, milk, oil, honey, flour, sugar, and custom materials.oz to Cups ConverterThis calculator uses the US liquid-volume relationships **8 US fluid ounces = 1 US cup** and **1 US fluid ounce = 29.5735295625 mL**. It converts volume, not ounces of mass.Fluid Ounces to Pounds ConversionConvert US fluid ounces to pounds using a water approximation or a density you provide.mg to mL CalculatorConvert milligrams to milliliters from a required mg/mL concentration, with medication-label examples and concentration-dependent safety notes.ml to kg ConverterConvert milliliters to kilograms with density presets for water, milk, olive oil, honey, glycerin, and custom g/mL materials.

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