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Fluid Ounces to ML Converter

Convert US fluid ounces to milliliters instantly, with a reference table for cocktails, baby bottles and drink sizes.

Ounces to ML Converter

1 fl oz = 29.574 mL

Multiply US fluid ounces by 29.57352956 to get milliliters.

The link carries the values you entered, so whoever opens it sees the same result. Nothing is stored on our side — the numbers travel in the link itself.

US fluid ounces to milliliters reference table

The conversions people look up most often, rounded to 3 decimal places.

Common US fluid ounces to milliliters conversions
US fluid ounce (fl oz)Milliliter (mL)
0.5 fl oz14.787 mL
1 fl oz29.574 mL
1.5 fl oz44.36 mL
2 fl oz59.147 mL
4 fl oz118.294 mL
6 fl oz177.441 mL
8 fl oz236.588 mL
12 fl oz354.882 mL
16 fl oz473.176 mL
20 fl oz591.471 mL
24 fl oz709.765 mL
32 fl oz946.353 mL
64 fl oz1,892.706 mL

How the ounces to ml converter calculation works

A US fluid ounce is 29.5735295625 milliliters:

milliliters = US fluid ounces × 29.57353

This converter uses the US fluid ounce. The imperial one, still printed on some British packaging, is 28.4131 ml — roughly 4% smaller. On a single measure the difference is a millilitre or two; across a 20 fl oz imperial pint against a 16 fl oz US pint, it is 95 ml.

Bar measures are the most common reason to convert:

  • 1 fl oz → 29.57 ml
  • 1.5 fl oz (a standard US shot) → 44.36 ml, against the UK's 25 ml or 35 ml measures and Europe's 40 ml
  • 2 fl oz (a double) → 59.15 ml
  • 4 fl oz → 118.29 ml

An American cocktail recipe scaled with 25 ml measures comes out 44% weaker than intended, which is enough to change the drink rather than just soften it.

Other volumes:

  • 8 fl oz (a US cup) → 236.59 ml
  • 12 fl oz (a soda can) → 354.88 ml
  • 16 fl oz (a US pint) → 473.18 ml
  • 20 fl oz (an imperial pint, in imperial ounces) → 568.26 ml
  • 32 fl oz (a quart) → 946.35 ml

Baby bottles are marked in both, and the graduations rarely line up: a bottle marked 4 oz and 120 ml is rounding 118.29 up. Follow whichever scale the formula instructions use, and do not mix them within a feed.

For quick work, multiply by 30.

Frequently asked questions

How do I convert US fluid ounces to milliliters?

Multiply the number of US fluid ounces by 29.5735296 to get milliliters.

How many milliliters are in 4 fl oz?

4 fl oz equals 118.294 mL. The reference table on this page lists the other values people look up most often.

How do I convert milliliters back to US fluid ounces?

Divide the number of milliliters by 29.5735296, or use the swap control on the converter above.

Is this conversion exact?

Yes. The factor is fixed by international definition rather than measured, so the conversion is exact - only the displayed rounding limits precision.

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