Weight & Volume Calculator

Select the shape of the hot tub:

What does this tool calculate?

Our calculator shows you the weight of the water (and additional data) based on the dimensions you supplied.

To calculate the correct weight, use the inner dimensions of the hot tub. Don't include the walls. The resulting calculated area will too be only the area of the water. This is super helpful when planning the foundation for your hot tub. This calculator will show you how much weight will be distributed over what area (yeah, hot tubs are heavy when filled - take this into account when thinking about the foundation under your hot tub).

Step-by-step hot tub weight calculator guide

  1. Select the correct shape of the hot tub
  2. Choose your preferred unit type
    preferred unit type
  3. Enter the inner dimensions of the hot tub
    round hot tub enter data
  4. Check the results. Don't forget you can change the unit system anytime.

Why knowing the weight of the hot tub is important?

If you want to set up your hot tub in your yard, it might not bother you much. However, if you want to use a foundation, a terrace, or set-it up inside, you have to take the weight into account for structural reasons.

How heavy is an inflatable hot tub?

An inflatable hot tub filled with water and people inside usually weighs more than 2200 pounds (1000 kg).  That's a lot of weight over a small area.

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