Calculator Comparison

Concrete Calculator vs Swimming Pool Calculator

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

Concrete Calculator

Home & Real Estate

Calculate the volume of concrete needed for a slab or patio in cubic feet, cubic yards, and the number of 60lb or 80lb bags required.

What you enter

Length
Width
Depth

What you get

Cubic Yards(primary)
Cubic Feet
60 lb Bags
80 lb Bags

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

Input Comparison

Shared Inputs

Width

Only in Concrete Calculator

Length
Depth

Only in Swimming Pool Calculator

Pool Shape
Length (or Diameter)
Average Depth
Water Cost

Which Calculator Should You Use?

Use the Concrete Calculator if you need to:

Calculate cubic yards
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 how much concrete I need?

Multiply length x width x depth (in feet) to get cubic feet, then divide by 27 to get cubic yards. For depth in inches, divide by 12 first. A standard 10x10 foot patio at 4 inches deep requires about 1.23 cubic yards.

How many bags of concrete do I need?

A 60 lb bag yields about 0.45 cubic feet and an 80 lb bag yields about 0.6 cubic feet. For small projects, bags are convenient. For anything over 1 cubic yard, consider ordering a ready-mix truck.

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 Concrete Calculator if you need to calculate cubic yards. Use the Swimming Pool Calculator if you need to calculate volume (gallons). Both calculators are free and require no sign-up.

Use Concrete Calculator Use Swimming Pool Calculator

Feature

Concrete Calculator

Swimming Pool Calculator