Fluid Ounces (US) to Millilitres Converter
Instantly convert US fluid ounces (fl oz) to millilitres (ml). Accurate, free volume calculator for cooking, baking, and science.
Calculate Your Liquid Volume
Enter the US fluid ounces (fl oz) below to get an instant, precise conversion to millilitres (ml), along with common kitchen equivalents.
Volume Converter
Enter the US fluid ounces to see the millilitre equivalent
Enter any value (e.g., 8 for a standard US cup)
Choose your preferred rounding precision
Automatically identifies standard kitchen measures (e.g., 8 fl oz = 1 Cup)
Converted Volume
Based on the US customary fluid ounce standard
US fl oz to ml Reference Chart
Standard conversions for quick lookup when following US recipes or measuring liquids in the UK and Europe.
| US Fluid Ounces (fl oz) | Millilitres (ml) | Common Kitchen Equivalent |
|---|---|---|
| 1 fl oz | 29.57 ml | 1 US Tablespoon + 1 tsp (approx) |
| 2 fl oz | 59.15 ml | 1 US Shot / Small Espresso |
| 4 fl oz | 118.29 ml | 1/2 US Cup / Small Teacup |
| 5 fl oz | 147.87 ml | Standard Wine Glass Pour |
| 8 fl oz | 236.59 ml | 1 US Customary Cup |
| 16 fl oz | 473.18 ml | 1 US Pint |
| 32 fl oz | 946.35 ml | 1 US Quart |
| 128 fl oz | 3785.41 ml | 1 US Gallon |
Volume Conversion FAQ
Everything you need to know about converting US fluid ounces to millilitres and getting accurate measurements.
There are exactly 29.5735295625 millilitres in one US fluid ounce. For most everyday cooking and baking purposes, this is commonly rounded to 29.57 ml or 30 ml.
A US fluid ounce is approximately 29.57 ml, while a UK (Imperial) fluid ounce is slightly smaller at approximately 28.41 ml. This difference is important to note when following international recipes or measuring spirits.
To convert US fluid ounces to millilitres, multiply the number of fluid ounces by 29.5735. For example, 8 fl oz × 29.5735 = 236.59 ml.
No. A standard US customary cup is 8 US fluid ounces, which equals approximately 236.59 ml. A ‘metric cup’ used in the UK, Australia, and Canada is exactly 250 ml. Always check which cup standard your recipe uses.