Calculator Comparison

Square Footage Calculator vs Swimming Pool Calculator

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

Square Footage Calculator

Home & Real Estate

Calculate the area of a rectangular space in square feet, square meters, and acres. Perfect for rooms, yards, lots, and flooring projects.

What you enter

Length
Width

What you get

Square Feet(primary)
Square Meters
Acres

Use Square Footage 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	Square Footage Calculator	Swimming Pool Calculator
Category	Home & Real Estate	Home & Construction
Inputs	2 required fields	5 required fields
Outputs	3 results	4 results
Chart	No chart	No chart
FAQs	3 answered	3 answered

Input Comparison

Shared Inputs

Width

Only in Square Footage Calculator

Length

Only in Swimming Pool Calculator

Pool Shape
Length (or Diameter)
Average Depth
Water Cost

Which Calculator Should You Use?

Use the Square Footage Calculator if you need to:

Calculate square feet
When you know your length and width

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 square footage?

Multiply the length by the width of the space. For example, a room that is 20 feet long and 15 feet wide is 300 square feet (20 x 15 = 300).

How many square feet are in an acre?

One acre equals 43,560 square feet. A standard residential lot is typically 0.1 to 0.5 acres, or roughly 4,356 to 21,780 square feet.

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 Square Footage Calculator if you need to calculate square feet. Use the Swimming Pool Calculator if you need to calculate volume (gallons). Both calculators are free and require no sign-up.

Use Square Footage Calculator Use Swimming Pool Calculator

Feature

Square Footage Calculator

Swimming Pool Calculator