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Fluid Ounce to
Millilitre Converter

Convert fluid ounces to millilitres (the international metric spelling) instantly. Our converter supports both US and Imperial fluid ounces with live interactive diagrams and comprehensive reference charts.

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The Converter

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Fluid Ounces (fl oz) Millilitres (mL)
Reference

Fluid Ounce to Millilitre Chart

Quick reference for common conversions between fluid ounces and millilitres.

Fluid OuncesUS MillilitresImperial MillilitresCommon Use
0.514.78714.207Tablespoon
129.57428.413Standard Measure
259.14756.826Double Measure
4118.294113.652Quarter Cup
6177.441170.479Tea Cup
8236.588227.305US Cup
10295.735284.131UK Half Pint
16473.176454.609US Pint
20591.470568.261Imperial Pint
32946.353909.218US Quart
1283785.4113636.872US Gallon

Frequently Asked Questions

Common questions about this conversion tool and how to use it.

"Millilitres" is the internationally accepted spelling (used in the UK, Australia, Canada, and most of the world), while "milliliters" is the American English spelling. They refer to the exact same unit of volume — 1/1000 of a litre.
1 US fluid ounce equals 29.5735 millilitres. 1 Imperial (UK) fluid ounce equals 28.4131 millilitres.
250 mL ÷ 29.5735 = 8.4535 US fluid ounces, or 250 ÷ 28.4131 = 8.7988 Imperial fluid ounces.
The UK adopted the metric system for most measurements. Millilitres are the standard unit for measuring small volumes in cooking, medicine, and science throughout the Commonwealth and Europe.
A US cup = 236.588 mL (8 fl oz), a metric cup = 250 mL, and a UK cup = 284.131 mL (10 Imperial fl oz).
100 mL equals approximately 3.3814 US fluid ounces or 3.5195 Imperial fluid ounces.