Pool Calculator

Q: What size pump do I need?

The pump should circulate the total pool volume in 6-8 hours. For a 20,000-gallon pool, you need approximately 25-35 GPM pump capacity.

Q: How much chlorine do I need?

Maintain 1-3 ppm (parts per million) of free chlorine. Chemical dosage depends on pool volume and current chlorine levels.

Q: How do I calculate chemical dosages?

Based on pool volume and manufacturer recommendations. Use the calculator's volume result to determine proper chemical amounts for your pool size.

Q: What affects pool volume?

Pool volume is affected by shape, dimensions (length, width), and depth variations (shallow end, deep end, average depth).

Pool Dimensions

Pool Shape

Select pool shape

Length

Length of the pool

Width

Width of the pool

Average Depth

Average depth of the pool

Shallow End Depth

Depth at shallow end

Deep End Depth

Depth at deep end

Calculation Results

Pool Calculator: Your Guide to Pool Volume and Requirements

Planning a pool installation or maintenance? Our Pool Calculator helps you determine the exact volume of water your pool can hold and provides essential information for proper pool management.

Understanding Pool Volume

Pool volume calculations are important for several reasons:

Chemical Treatment: Proper chemical dosing
Filtration: Correct pump sizing
Heating: Energy requirements
Maintenance: Water replacement
Cost Estimation: Water and chemical costs

How to Use the Pool Calculator

Select Pool Shape: Choose the pool configuration
Enter Length: Input the pool length
Enter Width: Input the pool width
Enter Average Depth: Input the average depth
Enter Shallow End Depth: Input shallow end depth
Enter Deep End Depth: Input deep end depth
Click Calculate: Get volume and requirements

Pool Volume Calculation Formula

Rectangular Pool:
Volume = Length × Width × Average Depth

Circular Pool:
Volume = π × (Diameter/2)² × Average Depth

Oval Pool:
Volume = π × (Length/2) × (Width/2) × Average Depth

Kidney Pool:
Volume = (Length × Width × Average Depth) × 0.85

Average Depth Formula:
Average Depth = (Shallow End + Deep End) / 2

Common Pool Types and Requirements

Residential Pools:
- Typical Size: 12' × 24' to 20' × 40'
- Average Depth: 4' to 8'
- Volume Range: 10,000 to 30,000 gallons
Commercial Pools:
- Typical Size: 25' × 50' to 50' × 100'
- Average Depth: 5' to 12'
- Volume Range: 50,000 to 500,000 gallons
Lap Pools:
- Typical Size: 8' × 40' to 10' × 50'
- Average Depth: 4' to 6'
- Volume Range: 8,000 to 15,000 gallons
Splash Pools:
- Typical Size: 10' × 20' to 15' × 30'
- Average Depth: 2' to 4'
- Volume Range: 3,000 to 8,000 gallons

Real-World Examples

Example 1: Standard Residential Pool

Pool Shape: Rectangular
Length: 32 feet
Width: 16 feet
Shallow End: 3 feet
Deep End: 8 feet
Results:
- Average Depth: 5.5 feet
- Volume: 28,160 gallons
- Surface Area: 512 square feet
- Turnover Rate: 8 hours
- Recommended Pump: 40 GPM

Example 2: Circular Pool

Pool Shape: Circular
Diameter: 24 feet
Average Depth: 5 feet
Results:
- Volume: 16,956 gallons
- Surface Area: 452 square feet
- Turnover Rate: 6 hours
- Recommended Pump: 30 GPM

Frequently Asked Questions

How often should I change pool water?

Typically every 3-5 years, depending on maintenance and water quality.

What size pump do I need?

Pump should circulate total volume in 6-8 hours.

How much chlorine do I need?

1-3 ppm (parts per million) of free chlorine.

How do I calculate chemical dosages?

Based on pool volume and manufacturer recommendations.

What affects pool volume?

Shape, dimensions, and depth variations.