1. What is a Pool Pump GPM Calculator?

Definition: This calculator determines the required flow rate (in gallons per minute) for a pool pump based on pool volume and desired turnover time.

Purpose: It helps pool owners and maintenance professionals properly size their pool pump for efficient water circulation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Flow rate (gallons per minute)
• \( V_{pool} \) — Total pool volume (gallons)
• \( T_t \) — Desired turnover time (minutes)

Explanation: The pool volume is divided by the desired turnover time to determine the required pump flow rate.

3. Importance of Proper Pump Sizing

Details: Correct pump sizing ensures efficient filtration, proper chemical distribution, and energy savings while maintaining water clarity.

4. Using the Calculator

Tips: Enter the pool volume in gallons and desired turnover time in minutes. Typical turnover times are 6-8 hours (360-480 minutes) for residential pools.

5. Frequently Asked Questions (FAQ)

Q1: What is turnover time?
A: The time required to circulate the entire pool volume through the filtration system.

Q2: How do I find my pool volume?
A: Use our Pool Volume Calculator or multiply length × width × average depth × 7.5 for rectangular pools.

Q3: What's a typical turnover time?
A: Residential pools: 6-8 hours; Commercial pools: 4-6 hours; Spas: 30-60 minutes.

Q4: Should I consider other factors when selecting a pump?
A: Yes, also consider pipe size, filter type, and total dynamic head (TDH) for complete pump sizing.

Q5: How often should I run my pool pump?
A: Typically 8-12 hours daily, but depends on pool size, usage, and environmental factors.