Volume for a 12×24 Rectangle Pool
Free calculator with pre-filled dimensions • Updated March 2026
A 12×24 pool with 5-foot average depth holds approximately 10,772 gallons.
Open calculator with these dimensions →12×24 Rectangle Pool Volume
A 12×24 pool is popular for smaller backyards — it fits on most suburban lots while still providing space for swimming laps (short course) and family fun. At 5-foot average depth, it holds 10,772 gallons.
Volume Formula
Gallons = Length × Width × Average Depth × 7.48
24 × 12 × 5 × 7.48 = 10,772 gallons
Equipment Sizing
| Equipment | Recommended Size | Cost (2026) |
|---|---|---|
| Variable speed pump | 1.5 HP | $500–$1,000 |
| Sand filter | 22" (250 lb sand) | $300–$500 |
| Gas heater | 200,000 BTU | $1,500–$2,500 |
| Salt chlorinator | 25,000 gallon rated | $600–$1,200 |
| Robotic cleaner | Standard residential | $500–$1,000 |
Pro Tips
- Variable speed pumps save $500+/year on a pool this size compared to single-speed. They run at low RPM for daily filtration and ramp up for cleaning — required by law in many states (Title 20 in California).
- 10,772 gallons is small enough for saltwater. A 25,000-gallon salt chlorinator handles this pool easily with room to spare. Salt systems reduce annual chlorine costs from $400–$600 to $50–$100 in salt.
- A 12×24 pool is perfect for a pool cover. Manual safety covers start at $1,500 and automatic covers at $8,000. At this size, covers are practical to handle and dramatically reduce heating and chemical costs.
Frequently Asked Questions
How many gallons in a 12×24 pool?
At 5-foot average depth: 12 × 24 × 5 × 7.48 = 10,772 gallons. At 4-foot average depth: 8,617 gallons. At 6 feet: 12,926 gallons.
What size pump for a 12×24 pool?
A 1.5 HP variable-speed pump is ideal. It provides adequate flow for filtration (23+ GPM to turn over the pool every 8 hours) while being energy-efficient at low speed. Single-speed 1 HP works but costs more to operate.