How many gallons in 78 x 78 x 31 hot tub?

Answer 1

Here's the formula for volume:

length*width*average depth*5.9 (if it's round) or 7.5 (if it's square)

78 = 6.5 feet

6.5*6.5*2.6*7.5 = 823.88 gallons of water