WeekendCalc

How Many Gallons in a 24 Foot Kidney Pool?

A 24 ft kidney pool with lobes 14 ft and 10 ft wide holds about 7,756 gallons at a flat 4 ft depth and 9,695 gallons at 5 ft (an estimate, good to roughly 5 to 10%).

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Your project

Measure straight across the pool at the widest point of each rounded end.

Same as the shallow depth if the bottom is flat (most above-ground pools).

gal/min

A garden hose delivers about 5 to 10 gallons a minute.

Results

Example job shown. Change the numbers to match yours.

Pool volume
7,756 US gallons
Liters
29,359 L
Cubic feet
1,037 ft³
Water surface area
259 ft²
Average depth
4.00 ft

Filling

Time to fill with a hose
14.4 hours
Time to fill with a hose
0.6 days
  • Volume = surface area × average depth × 7.48 gallons per cubic foot. Oval pools use 0.7854 (π ÷ 4) times a rectangle of the same length and width. Kidney pools use the trade rule of thumb area = (A + B) × length × 0.45, good to roughly 5 to 10%. Other freeform pools are harder to estimate: use the average of several measurements.

Before you buy: round up to whole packs, check the size printed on the label, and add a little spare. Your supplier has the final say.

Gallons in a 24 ft kidney pool (14 ft and 10 ft lobes), by average depth

The water surface is about 259 ft² ((A + B) × length × 0.45). Kidney shapes vary, so this is an approximation good to roughly 5 to 10%. The fill time is for a hose delivering 9 gallons per minute.

Average depthGallonsLitersHose fill time
3.5 ft6,78625,68912.6 hrs
4 ft7,75629,35914.4 hrs
4.5 ft8,72533,02916.2 hrs
5 ft9,69536,69918.0 hrs
5.5 ft10,66440,36819.7 hrs

For chemicals, round up, and have a pool store confirm the volume of a freeform pool.

Water weight, pump size and fill cost

At 9,695 gallons, this pool holds about 80,854 lb of water (40.4 tons). That is a lot of weight on one patch of ground, which is why the base must be level and well compacted before you fill it.

To turn the whole volume over through the filter in 8 hours, the pump and filter need to move at least 20.2 gallons per minute (26.9 GPM for a 6-hour turnover). If a chemical label gives a dose per 10,000 gallons, multiply it by 0.97 for this pool.

Water price per 1,000 galCost to fill
$4$39
$6$58
$8$78

Water prices vary a lot, and some utilities charge a separate sewer rate that does not apply to a pool. Check your own bill.

Want to change anything else? The calculator above is the full Pool Volume Calculator: edit any number and the results update instantly.

Tools & materials for this project

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Pool test kitPool chlorine tabletsPool vacuumPool coverSkimmer net

Frequently asked questions

How many gallons in a 24 ft kidney pool?

With lobes 14 ft and 10 ft wide, about 7,756 gallons at a flat 4 ft depth and 9,695 at 5 ft. It is an estimate, good to roughly 5 to 10%, so measure your own pool.

How do you calculate the volume of a kidney pool?

Gallons = (A + B) × length × 0.45 × average depth × 7.48, where A and B are the widths of the two rounded ends. This is the common pool-trade rule of thumb, not an exact formula.

Related sizes and guides

20 ft kidney pool5,386 gal at 4 ft deep28 ft kidney pool9,802 gal at 4 ft deep32 ft kidney pool12,926 gal at 4 ft deepHow to calculate pool volumeGuidePool Surface Area CalculatorCover, liner and deck

Related sizes

12 × 24 ft oval pool6,768 gal at 4 ft deep15 × 30 ft oval pool10,575 gal at 4 ft deep18 × 33 ft oval pool13,959 gal at 4 ft deep21 × 41 ft oval pool20,234 gal at 4 ft deep15 ft round pool5,288 gal at 4 ft deep21 ft round pool10,364 gal at 4 ft deep

Estimates only. Results assume standard materials and simple shapes. Supplier products vary, and the final call on quantity, structure and safety is yours. Check your local code and your supplier's guidance before ordering.