Cold plunge tools & calculators
Before you invest in a cold plunge, know the numbers. Our free calculators turn raw specifications into real-world costs and logistics—the hard data most buyers overlook until after purchase.
Water Cost Calculator
FreeMaintenance
Calculate the ongoing water utility cost of your cold plunge. Set your volume, local water rate, and change frequency to see annual projections—plus an ice vs. tap water cost comparison.
Floor Load Calculator
Coming soonInstallation
Find out if your deck, balcony, or floor can safely support the filled weight of a cold plunge. Calculates PSF (pounds per square foot) from dry weight, water volume, and footprint area.
Why run the numbers before you buy?
Most cold plunge buyers focus exclusively on the upfront purchase price. The ongoing costs—water, electricity, maintenance chemicals, and filtration consumables—rarely appear in manufacturer spec sheets, yet they accumulate quietly month after month. A tub with a high-efficiency ozone sanitation system may cost more upfront but save hundreds of dollars per year in reduced water change frequency.
Similarly, placement logistics like floor load capacity are frequently overlooked until a plumber or contractor raises concerns. A filled 100-gallon cold plunge can weigh over 1,000 pounds—far beyond what a standard residential deck is rated for without reinforcement.
These calculators exist to give you the complete picture before you commit. They are tub-agnostic by design: enter any volume, any rate, any footprint, and the math works for any product on the market.