Maximum Turtle Quantity Calculator

If the maximum turtle quantity shows 0, then your tank is too small to keep even one turtle of the mentioned shell length.

This calculator works on the following principle:

A commonly accepted rule is that a turtle requires at least 10 gallons of tank volume for every inch of its shell length. For instance, a 4-inch turtle would need a 40-gallon tank, while a 12-inch turtle would require a 120-gallon tank.

So, if you are planning to keep baby turtles (2 inches shell length) and your aquarium holds 50 US gallons water, then you can keep 2 of those turtles.