🚿 Shower Cost Calculator
Calculate what each shower costs in water and water-heating energy, and how much a low-flow shower head or shorter showers could save per year.
Result
Estimates only. Results depend on your inputs and are not financial, tax or legal advice.
How this is calculated
Water used = minutes × flow. Heating energy assumes the water is warmed by about 45 °F with a 90%-efficient heater. Cost = water cost + energy cost.
Frequently asked questions
How much does a low-flow head save?
Switching from 2.5 to 1.5 gallons per minute cuts water and heating energy for showers by 40%.
Is a bath cheaper?
A full bath uses roughly 35–50 gallons — more than most showers under 15 minutes.