Hydro Flask bottles come in many different shapes and sizes and are usually measured in US ounces.
So how many Hydro Flasks bottles does it take to make a gallon or to make a liter?
It takes 4 bottles of 32 oz Hydro Flasks to make a Gallon, 6.4 bottles of the 20 oz and 5.3 bottles of the 24 oz size. The 64 oz Hydro Flask is half a gallon and the 128 oz Hydro Flask is a full gallon. The 32 oz is closest to 1 Liter at 946 mL.
Below is a table showing the different sized Hydro Flasks as well as their volume in mL and how many of each bottle you need to make a full gallon or liter:
|Size Hydro Flask||Volume in mL||Bottles Required|
To Make a Gallon
To Make a Liter
|12 oz||355 mL||10.7||2.82|
|16 oz||473 mL||8||2.11|
|18 oz||532 mL||7.1||1.88|
|20 oz||592 mL||6.4||1.69|
|21 oz||621 mL||6.1||1.61|
|24 oz||710 mL||5.3||1.41|
|25 oz||749 mL||5.1||1.34|
|32 oz||946 mL||4||1.06|
|40 oz||1,182 mL||3.2||0.85|
|64 oz||1,892 mL||2||0.53|
|128 oz||3,785 mL||1||0.26|
Get Yourself a Hydro Flask
Hydro Flasks are a great way to help yourself drink more water and they can keep water ice cold for up to 24+ hours.
Click here to see the latest prices of Hydro Flasks at Amazon