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138 Oz to mL

Here you can find the conversion of 138 oz to ml, or 138 ounces to milliliters in other words.

On this page you can learn what is the volume of 138 oz in ml, not to be confused with an ounces to mass conversion.

Converting 138 ounces to ml is quite easy when you know whether you have imperial or Unites States fluid ounces as explained a bit further down in this post.

If you have come here by searching for 138 ounces in ml or 138 fl oz to ml, then you are right here, too 🙂

Read on to learn how many ml in 138 oz, and check out our calculator below:

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Convert 138 OZ to ML

How much is 138 oz in ml?

In order to convert 138 oz to ml we need to quickly look at the fluid ounces in use in the Unites States.

Usually, the term fl oz refers to the US customary fluid ounce with a volume of 29.5735295625 ml [1], but getting 138 fl oz in ml may also be related to the US fluid ounce for food labelling, defined as 30 ml [2].

In the UK, there is only one liquid ounce of 28.4130625 milliliters [3].

And in Canada, the liquid ounce is also 28.4130625 ml.

Thus, 138 fl oz in ml is:

  • 4081.15 ml for US customary fluid ounces
  • 3921 ml for Imperial fluid ounces, also known as UK or Canadian fluid ounces
  • 4140 ml for Unites States nutrition fluid ounces

To change 138 oz to ml the formula is multiplying the volume in ounces by [1], [2] or [3], depending on the particular unit under consideration.

Additional Information

You already know the answer to how many milliliters in 138 ounces, yet we recommend you check out our calculator below, as our tool allows you to convert any volume in ounces quickly and easily to milliliters.

For example, to make the 138 oz ml conversion enter 138 in the field Oz, and select the volume unit next.

Then hit the convert button to obtain 138 fluid ounces in ml.

Besides 138 fluid ounces to ml, similar volume conversions on this website include:

138 OZ in ML

To sum up, the 138 ounce to ml conversion is quite easy, and even if you happen to choose the wrong unit, the difference in percent is not that much as we have explained in detail on our home page.


If you want to convert 138 ounces to ml doubting about the unit, then, unless you are from the UK or Canada for example, go with US customary except for when your input is related to food.

Taking all of the above into account you know the answer of 138 oz how many ml for all cases. The same is true if you have been searching for 138 ounce in ml or convert 138 ounces to ml for example.

Note that you can also find many common ounces to milliliter conversions including 138 oz to ml using the search form in the sidebar of this website.

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