US Fluid Ounces to Milliliters Converter
Convert us fluid ounces (fl oz) to milliliters (mL) using documented conversion factors. Includes interactive calculations, conversion formula, worked steps, and common reference tables.
Live Interactive Calculator
milliliter = us fluid ounce × 29.57353Conversion Formula
To convert from us fluid ounces to milliliters, apply the mathematical formula:
Where fl oz represents us fluid ounces and mL represents milliliters.
Conversion Factor
The base relationship defined under primary measurement standards:
Reference: NIST SP 811
Volume Measurement & Regional Capacity Standards
Volume measures three-dimensional capacity. In the International System of Units (SI), volume is derived from cubic meters (m³), with the liter (L) defined as 1 cubic decimeter (0.001 m³).
Be careful when converting liquid units between US and British measurements:
- 1 US Gallon is legally defined as 231 cubic inches, equal to 3.785411784 liters.
- 1 Imperial Gallon is defined as exactly 4.54609 liters (roughly 20% larger than a US gallon).
- US Fluid Ounce (29.57 mL) is slightly larger than a British Imperial Fluid Ounce (28.41 mL), but 1 US pint has 16 fl oz while 1 UK pint has 20 imperial fl oz.
Unit-Scale clearly labels regional variants so you never confuse US Customary liquid measures with British Imperial measures.
How to Convert US Fluid Ounces to Milliliters
Converting measurements between us fluid ounces and milliliters follows a structured calculation process:
- Identify the quantity in us fluid ounces (fl oz) that you wish to convert.
- Multiply the input by the conversion factor ratio
1 fl oz = 2957353 mL.. - The resulting value is the equivalent amount expressed in milliliters (mL).
Common US Fluid Ounces to Milliliters Reference Table
Frequently referenced values calculated using documented measurement conversion factors.
| US Fluid Ounce (fl oz) | Milliliter (mL) | Arithmetic Expression |
|---|---|---|
| 1 fl oz | 29.57353 mL | 1 × 29.57353 |
| 2 fl oz | 59.147059 mL | 2 × 29.57353 |
| 4 fl oz | 118.294118 mL | 4 × 29.57353 |
| 8 fl oz | 236.588237 mL | 8 × 29.57353 |
| 12 fl oz | 354.882355 mL | 12 × 29.57353 |
| 16 fl oz | 473.176473 mL | 16 × 29.57353 |
| 20 fl oz | 591.470591 mL | 20 × 29.57353 |
| 24 fl oz | 709.76471 mL | 24 × 29.57353 |
| 32 fl oz | 946.352946 mL | 32 × 29.57353 |
| 64 fl oz | 1,892.705892 mL | 64 × 29.57353 |
| 128 fl oz | 3,785.411784 mL | 128 × 29.57353 |
Worked Calculation Examples
Practical step-by-step calculations showing how to convert us fluid ounces to milliliters with exact mathematical equations.
Application context: 1 US fl oz is exactly 29.5735295625 mL
Application context: 1 standard US culinary cup (236.59 mL)
Application context: US pint bottle (473.18 mL)
About the Units
Authoritative technical specifications and historical definitions for both units.
US Fluid Ounce (fl oz)
The US customary fluid ounce is defined as 1/128 of a US liquid gallon, which equals exactly 29.5735295625 milliliters. Distinct from weight ounces.
Milliliter (mL)
A metric unit of volume equal to one-thousandth of a liter (1 cm³). Standard in medicine, chemistry, and culinary ingredients worldwide.
Need to convert Milliliters back to US Fluid Ounces?
Reverse Formula: us fluid ounce = milliliter × 0.033814
Related Volume & Capacity Converters
Contextual conversions related to this pair within the measurement graph.