Calculator Comparison

Electricity Cost Calculator vs Swimming Pool Calculator

Not sure which calculator to use? Here's a side-by-side comparison of the Electricity Cost Calculator and Swimming Pool Calculator to help you pick the right one for your needs.

Electricity Cost Calculator

Home & Real Estate

Calculate the cost of running any electrical device based on its wattage, daily usage hours, and your electricity rate.

What you enter

Wattage
Hours Used Per Day
Electricity Rate
Days Per Month

What you get

Monthly Cost(primary)
Daily Cost
Annual Cost
Monthly kWh Usage

Use Electricity Cost Calculator

Swimming Pool Calculator

Home & Construction

Calculate swimming pool volume in gallons, filling cost, heating cost, and chemical needs based on pool dimensions and shape.

What you enter

Pool Shape
Length (or Diameter)
Width
Average Depth
Water Cost

What you get

Volume (Gallons)(primary)
Filling Cost
Surface Area
Monthly Chemical Cost

Use Swimming Pool Calculator

Key Differences

Feature	Electricity Cost Calculator	Swimming Pool Calculator
Category	Home & Real Estate	Home & Construction
Inputs	4 required fields	5 required fields
Outputs	4 results	4 results
Chart	No chart	No chart
FAQs	3 answered	3 answered

Input Comparison

Only in Electricity Cost Calculator

Wattage
Hours Used Per Day
Electricity Rate
Days Per Month

Only in Swimming Pool Calculator

Pool Shape
Length (or Diameter)
Width
Average Depth
Water Cost

Which Calculator Should You Use?

Use the Electricity Cost Calculator if you need to:

Calculate monthly cost
When you know your wattage and hours used per day

Use the Swimming Pool Calculator if you need to:

Calculate volume (gallons)
When you know your pool shape and length (or diameter)

Frequently Asked Questions

How do I calculate electricity cost for an appliance?

Multiply the appliance wattage by hours of use per day, divide by 1,000 to get kWh, then multiply by your electricity rate. For example, a 1,000W space heater running 8 hours at $0.12/kWh costs $0.96 per day or about $28.80 per month.

What is the average electricity rate in the US?

The average US residential electricity rate is approximately $0.12 to $0.16 per kWh as of 2025. Rates vary significantly by state, from $0.08/kWh in some southern states to over $0.30/kWh in Hawaii and parts of New England.

How many gallons is my pool?

Calculate pool volume by shape: Rectangular = Length × Width × Avg Depth × 7.5. Round = Diameter × Diameter × Avg Depth × 5.9. Oval = Length × Width × Avg Depth × 6.7. A 20×10 ft rectangular pool at 5 ft average depth holds 7,500 gallons.

How much does it cost to fill a pool?

Pool filling costs vary by location but typically run $0.003 to $0.006 per gallon for municipal water. A 15,000-gallon pool costs $45-$90 to fill. Well water is free but may need treatment. Some municipalities offer a sewer credit since pool water doesn't enter the sewer system.

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Bottom Line

Choose the Electricity Cost Calculator if you need to calculate monthly cost. Use the Swimming Pool Calculator if you need to calculate volume (gallons). Both calculators are free and require no sign-up.

Use Electricity Cost Calculator Use Swimming Pool Calculator

Feature

Electricity Cost Calculator

Swimming Pool Calculator