๐ Household
Hot Tub Cost Calculator
Most of a hot tub energy bill goes to holding temperature rather than to heating it up, because heat leaks continuously through the cover and shell. A well-fitted insulating cover can cut standing heat loss by more than half.
How it works
Water volume
Average outside temperature
Set temperature
Cover and insulation
Pump and controls power
Pump running hours per day
Electricity rate
Standby heating per day
Pump energy per day
Cost per day
Monthly running cost
Yearly running cost
Hours to heat from cold
Frequently asked questions
How do I use the Hot Tub Cost Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.