Free calculator
Shower Cost Calculator
Free Shower Cost Calculator with instant browser-based results and a clear calculation breakdown.
💧 Shower Cost Calculator
Calculate the cost of your showers based on water usage, heating energy, and frequency. Enter your details below to estimate daily, monthly, and yearly costs.
Typical range: 5-15 minutes
Standard: 2.5 GPM, Low-flow: 1.5-2.0 GPM
Can use decimals (e.g., 0.5 for every other day)
Average US rate: $1.50-$3.00
$ per kWh (Electric avg: $0.10-$0.15)
Cold water supply temp (typically 50-60°F)
Comfortable range: 100-110°F
How it's calculated:
Water volume = Duration × Flow Rate × Showers/Day
Water cost = (Volume / 1000) × Water Rate
Energy needed = Volume × 8.34 lbs/gal × (Shower Temp - Inlet Temp) × 1 BTU/lb°F
For electric: kWh = BTU / 3412 / 0.95 (efficiency)
For gas: Therms = BTU / 100000 / 0.60 (efficiency)
Total cost = Water cost + Energy cost
Water volume = Duration × Flow Rate × Showers/Day
Water cost = (Volume / 1000) × Water Rate
Energy needed = Volume × 8.34 lbs/gal × (Shower Temp - Inlet Temp) × 1 BTU/lb°F
For electric: kWh = BTU / 3412 / 0.95 (efficiency)
For gas: Therms = BTU / 100000 / 0.60 (efficiency)
Total cost = Water cost + Energy cost
Want to understand the calculation?
Read the guideSee examples, formula notes and limitations.