Utility Pet Calculator

1. Enter device wattage
Use the rated or measured power of the pet-related equipment being estimated.

2. Add daily operating time
Enter the average hours the device runs each day, accounting for timers or cycling when known.

3. Enter the electricity rate
Use the per-kilowatt-hour rate from the utility bill.

4. Estimate extra water
Add monthly gallons used for tanks, fountains, cleaning, bathing, or habitat care.

5. Enter the water rate
Use a combined water and sewer rate per 1,000 gallons when both charges increase with use.

Monthly electricity cost = (Watts ÷ 1,000) × Hours/day × 30.4375 × Electricity rate Monthly water cost = (Gallons ÷ 1,000) × Water rate Total monthly pet utility cost = Electricity cost + Water cost

The model uses the average days per month and assumes constant device power while operating.

What the result means

The result is the estimated incremental monthly utility cost from the entered pet equipment and water use.

Veterinary care, food, supplies, and equipment purchase costs are outside this utility-only estimate.

Given: A 90-watt aquarium setup running 24 hours per day, electricity at $0.17/kWh, 250 gallons of extra water per month, and water at $9 per 1,000 gallons.

Calculation: Electricity = 0.09 × 24 × 30.4375 × $0.17 = $11.18. Water = 250 ÷ 1,000 × $9 = $2.25. Total = $13.43 per month.

Result: The modeled pet-related utility cost is about $13.43 per month, or $161.16 per year.