Pool Volume Calculator

Calculate swimming pool volume in gallons and liters from dimensions and shape for water treatment and chemical dosing.

Inputs

Pool Length

Pool Width

Shallow End Depth

Deep End Depth

Pool Shape

Tab to move between fields

Results

Volume (US Gallons)

132,086 gal

≈ 10 backyard pools

Volume (Liters)

500,000 L

≈ 10 backyard pools

Volume (Cubic Meters)500 m³

Surface Area312.5 m²

Average Depth1.6 m

Water Weight500,000 kg

Min Pump Flow Rate366.9 GPM

How to Use This Calculator

Enter the Pool Length, Width, Shallow End Depth, and Deep End Depth in meters.
Select Pool Shape (Rectangular or Oval).
Review Volume in US Gallons, Liters, and Cubic Meters.
Check Surface Area, Average Depth, Water Weight, and Min Pump Flow Rate for chemical dosing or structural planning.

How the result changes with Pool Length

Pool Length	Volume (US Gallons)	Volume (Liters)
7.7	40,682 gal	154,000 L
19	100,385 gal	380,000 L
34	179,637 gal	680,000 L
45	237,755 gal	900,000 L

What each input means

Pool Length: Length of the pool in meters. Standard competition pools are 25m (short course) or 50m (long course).
Pool Width: Width of the pool in meters. Standard competition pools have 6-10 lanes at 2.5m each.
Shallow End Depth: Depth at the shallow end in meters. Minimum for lap swimming is typically 1.0-1.2m.
Deep End Depth: Depth at the deep end in meters. Competition pools are typically 1.8-3.0m.
Pool Shape: Select the shape of your pool. Rectangular is most common for lap pools.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Pool Length = 25, Pool Width = 12.5, Shallow End Depth = 1.2, Deep End Depth = 2 = 5 input(s) provided
Calculate Volume
Volume
132086 = 132086
Calculate Volume
Volume = vol
500000 = 500000
Calculate Volume
Volume
500 = 500
Calculate Surface Area
Surface Area
312.5 = 312.5

Engine last updated August 6, 2026. Checked against 1 independently-derived test — how we verify calculators.

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