Our shower cost calculator is an excellent tool if you've ever wondered: "How many gallons of water does a shower use?" Who doesn't love taking long, hot showers? Hardly anyone, we'd guess. However, despite being a fantastic way to relax after (or ahead of) a long day, taking a long shower also means using up a tremendous amount of water and energy (to heat it) as well as increasing your average price of water bill. We're not going to explore the environmental effects here, but they're certainly not very positive either.
According to statistics, showers are the third largest use of water in a household, after toilets and washing machines (and the latter sometimes get overtaken by showers, too). We believe the first step to limiting our water consumption is awareness, and this is exactly what this tool was designed to spread.
We based the calculations on the most popular electricity-powered water heaters and ran the equations around our office. Most people were surprised by how much a 10-minute shower costs. Will they limit their shower time or choose to shower less frequently? We should hope so.
Shower Cost Calculator
Estimate water & energy cost per shower • Compare electric vs gas heating • Monthly & yearly savings
⚡ real-time calculation
Typical showerhead: 2.5 GPM (US) / 9 LPM (metric)
Average shower: 8–10 minutes
Hot temp − cold water temp. Typical rise: 50-70°F / 28-38°C
US avg ~$2.50/1000gal | Metric: $/m³ (1 m³ = 1000L)
Electric ~$0.13/kWh | Gas ~$0.05-0.07/kWh
Standard gas water heater: 75-85% | Condensing: 95%+
Used for monthly & yearly estimates
💰 COST BREAKDOWN (per shower)
💧 Water cost
$0.00
🔥 Heating cost
$0.00
✨ TOTAL per shower
$0.00
📆 Monthly: $0.00 | 📅 Yearly: $0.00
* Includes water supply + thermal energy to heat water. Gas efficiency applied.