Pool Volume Calculator
Calculate how many gallons of water your pool holds. Essential for accurate chemical dosing and equipment sizing.
Tip: Measure in feet and inches. Convert inches to decimal (e.g., 6 inches = 0.5 feet).
Note: Calculations are approximations. Actual volume may vary.
Response
Try asking:
💡 Tips
- • Be specific about measurements and units
- • Include your current readings if you have them
- • Mention any specific concerns or goals
Calculation Complete!
Your results are ready. Continue the conversation to get product recommendations or ask follow-up questions.
Ask PoolGuy:
How to Calculate Pool Volume
1. Measure Dimensions
Measure your pool's length, width (or diameter for round pools), and depth at both shallow and deep ends.
2. Enter Your Values
Select your pool shape and enter the measurements in feet. We'll apply the right formula for your pool type.
3. Get Your Volume
Instantly see your pool's volume in gallons, liters, and cubic feet. Results are saved to your profile.
Pool Volume Formulas
Frequently Asked Questions
Why do I need to know my pool's volume?
Knowing your pool's exact volume is crucial for adding the correct amount of chemicals. Too little won't sanitize properly; too much can damage equipment and irritate swimmers. Volume also helps size pumps, heaters, and filters correctly.
How do I measure average pool depth?
For pools with a constant slope from shallow to deep end, add the shallow depth and deep depth together, then divide by 2. For pools with a flat bottom, just use that single depth. For complex bottoms, measure at multiple points and average them.
How accurate is this pool volume calculator?
Our calculator uses industry-standard formulas and provides estimates within 5-10% of actual volume for most pools. Irregular shapes may have slightly lower accuracy. For precise measurements, consult your pool builder or use the water meter method.
What's the average pool volume for residential pools?
Most residential inground pools hold between 15,000-30,000 gallons. Above-ground pools typically range from 5,000-15,000 gallons. Small plunge pools may be as little as 3,000 gallons, while large custom pools can exceed 50,000 gallons.
How do I convert gallons to liters?
Multiply gallons by 3.785 to get liters. Our calculator shows both automatically. For example, a 20,000 gallon pool equals approximately 75,700 liters.