Knowledge of pool gallons is one of the key steps toward pool maintenance. This figure is essential as it is required to calculate the chemical requirement quantity and the heater requirements of the pool. In the blog – ” How many gallons are in my pool “, we help you to know gallons in **3 ways.**

## 1. Pool Gallons Calculator

In the pool gallon calculator, you can add the dimensions of the pool and calculate the gallons online

## 2. Calculation using formula

This is a simple three-step method, which will help you to calculate gallons.

### A. Calculation of gallons in a rectangular pool :

**Step 1: **DO THE MEASUREMENT

Measure the dimension of the pool such as length (L), width (W), and depth (D). If there are two depths denote D1 for the shallow end and D2 for the deep end.

**Step 2:** CALCULATE VOLUME

For a rectangular pool, the volume calculation formula is :

**CASE 1 – Uniform depth**

Volume = Length (L) X Width ( W) X Depth ( D )

**CASE 2 – Depth varies at two ends**

Volume = Length (L) X Width ( W) X Average Depth ( D )

Average Depth ( D ) = ( Depth D1 + Depth D2 ) / 2

**Step 3:** CONVERT VOLUME IN GALLONS

**CASE 1** – Measurement in US customary units or Imperial system i.e. feet

1 Cubic Foot = 7.48 US Gallons

1 Cubic Foot = 6.23 Imperial Gallons

**CASE 2 **– Measurement in Metric system i.e. meters

1 Cubic meter = 264.17 US Gallons

1 Cubic meter = 220 Imperial Gallons

**Examples**

#### Calculations in US customary units and in the Imperial system

**Consider a rectangular pool of 20 feet in length and 10 feet in width with a depth of 5 feet and 10 feet respectively**

Average depth = ( 5 + 10 ) / 2 = 7.5 feet

Volume = 20 X 10 X 7.5 cubic feet

Volume = 1500 cubic feet

US gallons = 7.48 X 1500 = **11220** as 1 cubic foot = 7.48 US gallons

~ **11200**

Imperial gallons = 6.23 X 1500 = **9345** as 1 cubic foot = is 6.23 Imperial gallons

~ **9300**

#### Calculations in the metric system

**Consider a rectangular pool of 12 meters in length and 5 meters in width with a depth of 1.5 meters and 3 meters respectively**

Average depth = ( 1.5 + 3 ) / 2 = 2.25 meters

Volume = 12 X 5 X 2.25 cubic meters

Volume = 135 cubic meters

US gallons = 135 X 264.17 = 35663

~ **35700**

Imperial Gallons = 135 X 220 = **29700**

### B. Calculation of gallons in a circular pool :

**Step 1: **DO THE MEASUREMENT

Measure the dimension of the pool such as diameter (Dia) and depth (D). If there are two depths denote D1 for the shallow end and D2 for the deep end.

**Step 2:** CALCULATE VOLUME

For a Circular pool, the volume calculation formula is :

**CASE 1 – Uniform depth**

Volume = Pie X Diameter (Dia) X Diameter (Dia) X Depth ( D ) / 4

= 3.14 X Dia X Dia X D / 4

**CASE 2 – Depth varies at two ends**

Volume = Pie X Diameter (Dia) X Diameter (Dia) X Average Depth ( D ) / 4

Average Depth ( D ) = ( Depth D1 + Depth D2 ) / 2

**Step 3:** CONVERT VOLUME IN GALLONS

**CASE 1** – Measurement in US customary units or Imperial system i.e. feet

1 Cubic Foot = 7.48 US Gallons

1 Cubic Foot = 6.23 Imperial Gallons

**CASE 2 **– Measurement in Metric system i.e. meters

1 Cubic meter = 264.17 US Gallons

1 Cubic meter = 220 Imperial gallons

**Examples**

#### Calculations in US customary units and in the Imperial system

**Consider a circular pool of 20 feet in dia with a depth of 5 feet and 10 feet respectively**

Average depth = ( 5 + 10 ) / 2 = 7.5 feet

Volume = 3.14 X 20 X 20 X 7.5 / 4 cubic feet

Volume = 2355 cubic feet

US gallons = 7.48 X 2355 = **17615** as 1 cubic foot = 7.48 US gallons

~ **17600**

Imperial gallons = 6.23 X 2355 = **14671** as 1 cubic foot = is 6.23 Imperial gallons

~ **14700**

#### Calculations in the metric system

**Consider a circular pool of 12 meters in dia with a depth of 1.5 meters and 3 meters respectively**

Average depth = ( 1.5 + 3 ) / 2 = 2.25 meters

Volume = 3.14 X 12 X 12 X 2.25 / 4 cubic meters

Volume = 2354 cubic meters

US gallons = 2354 X 264.17 = 67189

~ **67200**

Imperial Gallons = 2354 X 220 = 55955

~ **56000**

### C. Calculation of gallons in a triangular pool :

**Step 1: **DO THE MEASUREMENT

Measure the dimension of the pool such as sides ( S1, S2 & S3) and depth (D). If there are two depths denote D1 for the shallow end and D2 for the deep end.

**Step 2:** CALCULATE VOLUME

For a triangular pool, the volume calculation formula is :

**CASE 1 – Uniform depth**

In triangular shapes, we need to calculate semi-perimeter before calculating volume.

Semi perimeter SP = ( S1 + S2 + S3 ) / 2

Volume = Square root ( SP X ( SP – S1 ) X ( SP – S2 ) X ( SP – S3 ) X Depth ( D ) / 4

**CASE 2 – Depth varies at two ends**

Semi perimeter SP = ( S1 + S2 + S3 ) / 2

Volume = Square root ( SP X ( SP – S1 ) X ( SP – S2 ) X ( SP – S3 ) X Average Depth ( D ) / 4

Average Depth ( D ) = ( Depth D1 + Depth D2 ) / 2

**Step 3:** CONVERT VOLUME IN GALLONS

**CASE 1** – Measurement in US customary units or Imperial system i.e. feet

1 Cubic Foot = 7.48 US Gallons

1 Cubic Foot = 6.23 Imperial Gallons

**CASE 2 **– Measurement in Metric system i.e. meters

1 Cubic meter = 264.17 US Gallons

1 Cubic meter = 220 Imperial Gallons

**Examples**

#### Calculations in US customary units and in the Imperial system

**Consider a Triangular pool of sides 25 feet, 20 feet, and 15 feet with a depth of 5 feet and 10 feet respectively**

Average depth = ( 5 + 10 ) / 2 = 7.5 feet

Semi-perimeter SP = ( 25 + 20 + 15 ) / 2 = 30

Volume = Square root ( 30 X ( 30 – 25 ) X ( 30 – 20) X ( 30 – 15) ) X 7.5 cubic feet

Volume = Square root ( 30 X 5 X 10 X 15 ) X 7.5 cubic feet

Volume = Square root ( 22500) X 7.5 cubic feet

Volume = 150 X 7.5 cubic feet

Volume = 1125 cubic feet

US gallons = 7.48 X 1125 = **8437** as 1 cubic foot = 7.48 US gallons

~ **8400**

Imperial gallons = 6.23 X 1125 = **7008** as 1 cubic foot = is 6.23 Imperial gallons

~ **7000**

#### Calculations in the metric system

**Consider a Triangular pool of sides 12 meters, 10 meters, and 8 meters in dia with a depth of 1.5 meters and 3 meters respectively**

Average depth = ( 1.5 + 3 ) / 2 = 2.25 meters

Semi-perimeter SP = ( 12 + 10 + 8 ) / 2 = 15

Volume = Square root ( 15 X ( 15 – 12 ) X ( 15 – 10 ) X ( 15 – 8 ) ) X 2.25 cubic meters

Volume = Square root ( 15 X 3 X 5 X 7 ) X 2.25 cubic meters

Volume = Square root ( 1575) X2.25 cubic meters

Volume = 39.69 X 2.25 cubic meters

Volume = 89.3 cubic meters

US gallons = 89.3 X 264.17 = **23590**

~ **23600**

Imperial Gallons = 89.3 X 220 = 19646

~ **19600**

### D. Calculation of gallons in a square pool :

**Step 1: **DO THE MEASUREMENT

Measure the pool’s dimensions such as length (L), and depth (D). If there are two depths denote D1 for the shallow end and D2 for the deep end.

**Step 2:** CALCULATE VOLUME

For a square pool, the volume calculation formula is :

**CASE 1 – Uniform depth**

Volume = Length (L) X Length (L) X Depth ( D )

**CASE 2 – Depth varies at two ends**

Volume = Length (L) X Length (L) X Average Depth ( D )

Average Depth ( D ) = ( Depth D1 + Depth D2 ) / 2

**Step 3:** CONVERT VOLUME IN GALLONS

**CASE 1** – Measurement in US customary units or Imperial system i.e. feet

1 Cubic Foot = 7.48 US Gallons

1 Cubic Foot = 6.23 Imperial Gallons

**CASE 2 **– Measurement in Metric system i.e. meters

1 Cubic meter = 264.17 US Gallons

1 Cubic meter = 220 Imperial Gallons

**Examples**

#### Calculations in US customary units and in the Imperial system

**Consider a square pool of 20 feet in length with a depth of 5 feet and 10 feet respectively**

Average depth = ( 5 + 10 ) / 2 = 7.5 feet

Volume = 20 X 20 X 7.5 cubic feet

Volume = 3000 cubic feet

US gallons = 7.48 X 3000 = **22440** as 1 cubic foot = 7.48 US gallons

~ **22400**

Imperial gallons = 6.23 X 3000 = **18690** as 1 cubic foot = is 6.23 Imperial gallons

~ **18700**

#### Calculations in the metric system

**Consider a square pool of 12 meters in length with a depth of 1.5 meters and 3 meters respectively**

Average depth = ( 1.5 + 3 ) / 2 = 2.25 meters

Volume = 12 X 12 X 2.25 cubic meters

Volume = 324 cubic meters

US gallons = 324 X 264.17 = 85591

~ **85600**

Imperial Gallons = 324 X 220 = **71280**

~ **71300**

## 3. Checking the Table

### A – Rectangular Pool

#### US Gallons

Size | Depth 3′ | Depth 3.5′ | Depth 4′ | Depth 4.5′ | Depth 5′ | Depth 5.5′ | Depth 6′ |

How many gallons are in my pool of 10′ X 30′ | 6700 | 7900 | 9000 | 10100 | 11200 | 12300 | 13500 |

How many gallons are in my pool of 10′ X 33′ | 7400 | 8600 | 9900 | 11100 | 12300 | 13600 | 14800 |

How many gallons are in my pool of 10′ X 36′ | 8100 | 9400 | 10800 | 12100 | 13500 | 14800 | 16200 |

How many gallons are in my pool of 10′ X 39′ | 8800 | 10200 | 11700 | 13100 | 14600 | 16000 | 17500 |

How many gallons are in my pool of 10′ X 42′ | 9400 | 11000 | 12600 | 14100 | 15700 | 17300 | 18800 |

How many gallons are in my pool of 10′ X 45′ | 10100 | 11800 | 13500 | 15100 | 16800 | 18500 | 20200 |

How many gallons are in my pool of 10′ X 48′ | 10800 | 12600 | 14400 | 16200 | 18000 | 19700 | 21500 |

How many gallons are in my pool of 10′ X 52′ | 11700 | 13600 | 15600 | 17500 | 19400 | 21400 | 23300 |

How many gallons are in my pool of 10′ X 55′ | 12300 | 14400 | 16500 | 18500 | 20600 | 22600 | 24700 |

How many gallons are in my pool of 12′ X 30′ | 8100 | 9400 | 10800 | 12100 | 13500 | 14800 | 16200 |

How many gallons are in my pool of 12′ X 33′ | 8900 | 10400 | 11800 | 13300 | 14800 | 16300 | 17800 |

How many gallons are in my pool of 12′ X 36′ | 9700 | 11300 | 12900 | 14500 | 16200 | 17800 | 19400 |

How many gallons are in my pool of 12′ X 39′ | 10500 | 12300 | 14000 | 15800 | 17500 | 19300 | 21000 |

How many gallons are in my pool of 12′ X 42′ | 11300 | 13200 | 15100 | 17000 | 18800 | 20700 | 22600 |

How many gallons are in my pool of 12′ X 45′ | 12100 | 14100 | 16200 | 18200 | 20200 | 22200 | 24200 |

How many gallons are in my pool of 12′ X 48′ | 12900 | 15100 | 17200 | 19400 | 21500 | 23700 | 25900 |

How many gallons are in my pool of 12′ X 52′ | 14000 | 16300 | 18700 | 21000 | 23300 | 25700 | 28000 |

How many gallons are in my pool of 12′ X 55′ | 14800 | 17300 | 19700 | 22200 | 24700 | 27200 | 29600 |

How many gallons are in my pool of 15′ X 30′ | 10100 | 11800 | 13500 | 15100 | 16800 | 18500 | 20200 |

How many gallons are in my pool of 15′ X 33′ | 11100 | 13000 | 14800 | 16700 | 18500 | 20400 | 22200 |

How many gallons are in my pool of 15′ X 36′ | 12100 | 14100 | 16200 | 18200 | 20200 | 22200 | 24200 |

How many gallons are in my pool of 15′ X 39′ | 13100 | 15300 | 17500 | 19700 | 21900 | 24100 | 26300 |

How many gallons are in my pool of 15′ X 42′ | 14100 | 16500 | 18800 | 21200 | 23600 | 25900 | 28300 |

How many gallons are in my pool of 15′ X 45′ | 15100 | 17700 | 20200 | 22700 | 25200 | 27800 | 30300 |

How many gallons are in my pool of 15′ X 48′ | 16200 | 18800 | 21500 | 24200 | 26900 | 29600 | 32300 |

How many gallons are in my pool of 15′ X 52′ | 17500 | 20400 | 23300 | 26300 | 29200 | 32100 | 35000 |

How many gallons are in my pool of 15′ X 55′ | 18500 | 21600 | 24700 | 27800 | 30900 | 33900 | 37000 |

How many gallons are in my pool of 18′ X 30′ | 12100 | 14100 | 16200 | 18200 | 20200 | 22200 | 24200 |

How many gallons are in my pool of 18′ X 33′ | 13300 | 15600 | 17800 | 20000 | 22200 | 24400 | 26700 |

How many gallons are in my pool of 18′ X 36′ | 14500 | 17000 | 19400 | 21800 | 24200 | 26700 | 29100 |

How many gallons are in my pool of 18′ X 39′ | 15800 | 18400 | 21000 | 23600 | 26300 | 28900 | 31500 |

How many gallons are in my pool of 18′ X 42′ | 17000 | 19800 | 22600 | 25400 | 28300 | 31100 | 33900 |

How many gallons are in my pool of 18′ X 45′ | 18200 | 21200 | 24200 | 27300 | 30300 | 33300 | 36400 |

How many gallons are in my pool of 18′ X 48′ | 19400 | 22600 | 25900 | 29100 | 32300 | 35500 | 38800 |

How many gallons are in my pool of 18′ X 52′ | 21000 | 24500 | 28000 | 31500 | 35000 | 38500 | 42000 |

How many gallons are in my pool of 18′ X 55′ | 22200 | 25900 | 29600 | 33300 | 37000 | 40700 | 44400 |

How many gallons are in my pool of 20′ X 30′ | 13500 | 15700 | 18000 | 20200 | 22400 | 24700 | 26900 |

How many gallons are in my pool of 20′ X 33′ | 14800 | 17300 | 19700 | 22200 | 24700 | 27200 | 29600 |

How many gallons are in my pool of 20′ X 36′ | 16200 | 18800 | 21500 | 24200 | 26900 | 29600 | 32300 |

How many gallons are in my pool of 20′ X 39′ | 17500 | 20400 | 23300 | 26300 | 29200 | 32100 | 35000 |

How many gallons are in my pool of 20′ X 42′ | 18800 | 22000 | 25100 | 28300 | 31400 | 34600 | 37700 |

How many gallons are in my pool of 20′ X 45′ | 20200 | 23600 | 26900 | 30300 | 33700 | 37000 | 40400 |

How many gallons are in my pool of 20′ X 48′ | 21500 | 25100 | 28700 | 32300 | 35900 | 39500 | 43100 |

How many gallons are in my pool of 20′ X 52′ | 23300 | 27200 | 31100 | 35000 | 38900 | 42800 | 46700 |

How many gallons are in my pool of 20′ X 55′ | 24700 | 28800 | 32900 | 37000 | 41100 | 45300 | 49400 |

How many gallons are in my pool of 21′ X 30′ | 14100 | 16500 | 18800 | 21200 | 23600 | 25900 | 28300 |

How many gallons are in my pool of 21′ X 33′ | 15600 | 18100 | 20700 | 23300 | 25900 | 28500 | 31100 |

How many gallons are in my pool of 21′ X 36′ | 17000 | 19800 | 22600 | 25400 | 28300 | 31100 | 33900 |

How many gallons are in my pool of 21′ X 39′ | 18400 | 21400 | 24500 | 27600 | 30600 | 33700 | 36800 |

How many gallons are in my pool of 21′ X 42′ | 19800 | 23100 | 26400 | 29700 | 33000 | 36300 | 39600 |

How many gallons are in my pool of 21′ X 45′ | 21200 | 24700 | 28300 | 31800 | 35300 | 38900 | 42400 |

How many gallons are in my pool of 21′ X 48′ | 22600 | 26400 | 30200 | 33900 | 37700 | 41500 | 45200 |

How many gallons are in my pool of 21′ X 52′ | 24500 | 28600 | 32700 | 36800 | 40800 | 44900 | 49000 |

How many gallons are in my pool of 21′ X 55′ | 25900 | 30200 | 34600 | 38900 | 43200 | 47500 | 51800 |

How many gallons are in my pool of 24′ X 30′ | 16200 | 18800 | 21500 | 24200 | 26900 | 29600 | 32300 |

How many gallons are in my pool of 24′ X 33′ | 17800 | 20700 | 23700 | 26700 | 29600 | 32600 | 35500 |

How many gallons are in my pool of 24′ X 36′ | 19400 | 22600 | 25900 | 29100 | 32300 | 35500 | 38800 |

How many gallons are in my pool of 24′ X 39′ | 21000 | 24500 | 28000 | 31500 | 35000 | 38500 | 42000 |

How many gallons are in my pool of 24′ X 42′ | 22600 | 26400 | 30200 | 33900 | 37700 | 41500 | 45200 |

How many gallons are in my pool of 24′ X 45′ | 24200 | 28300 | 32300 | 36400 | 40400 | 44400 | 48500 |

How many gallons are in my pool of 24′ X 48′ | 25900 | 30200 | 34500 | 38800 | 43100 | 47400 | 51700 |

How many gallons are in my pool of 24′ X 52′ | 28000 | 32700 | 37300 | 42000 | 46700 | 51300 | 56000 |

How many gallons are in my pool of 24′ X 55′ | 29600 | 34600 | 39500 | 44400 | 49400 | 54300 | 59200 |

How many gallons are in my pool of 25′ X 30′ | 16800 | 19600 | 22400 | 25200 | 28100 | 30900 | 33700 |

How many gallons are in my pool of 25′ X 33′ | 18500 | 21600 | 24700 | 27800 | 30900 | 33900 | 37000 |

How many gallons are in my pool of 25′ X 36′ | 20200 | 23600 | 26900 | 30300 | 33700 | 37000 | 40400 |

How many gallons are in my pool of 25′ X 39′ | 21900 | 25500 | 29200 | 32800 | 36500 | 40100 | 43800 |

How many gallons are in my pool of 25′ X 42′ | 23600 | 27500 | 31400 | 35300 | 39300 | 43200 | 47100 |

How many gallons are in my pool of 25′ X 45′ | 25200 | 29500 | 33700 | 37900 | 42100 | 46300 | 50500 |

How many gallons are in my pool of 25′ X 48′ | 26900 | 31400 | 35900 | 40400 | 44900 | 49400 | 53900 |

How many gallons are in my pool of 25′ X 52′ | 29200 | 34000 | 38900 | 43800 | 48600 | 53500 | 58300 |

How many gallons are in my pool of 25′ X 55′ | 30900 | 36000 | 41100 | 46300 | 51400 | 56600 | 61700 |

#### Imperial Gallons

Size | Depth 3′ | Depth 3.5′ | Depth 4′ | Depth 4.5′ | Depth 5′ | Depth 5.5′ | Depth 6′ |

How many gallons are in my pool of 10′ X 30′ | 5600 | 6500 | 7500 | 8400 | 9300 | 10300 | 11200 |

How many gallons are in my pool of 10′ X 33′ | 6200 | 7200 | 8200 | 9300 | 10300 | 11300 | 12300 |

How many gallons are in my pool of 10′ X 36′ | 6700 | 7800 | 9000 | 10100 | 11200 | 12300 | 13500 |

How many gallons are in my pool of 10′ X 39′ | 7300 | 8500 | 9700 | 10900 | 12100 | 13400 | 14600 |

How many gallons are in my pool of 10′ X 42′ | 7800 | 9200 | 10500 | 11800 | 13100 | 14400 | 15700 |

How many gallons are in my pool of 10′ X 45′ | 8400 | 9800 | 11200 | 12600 | 14000 | 15400 | 16800 |

How many gallons are in my pool of 10′ X 48′ | 9000 | 10500 | 12000 | 13500 | 15000 | 16400 | 17900 |

How many gallons are in my pool of 10′ X 52′ | 9700 | 11300 | 13000 | 14600 | 16200 | 17800 | 19400 |

How many gallons are in my pool of 10′ X 55′ | 10300 | 12000 | 13700 | 15400 | 17100 | 18800 | 20600 |

How many gallons are in my pool of 12′ X 30′ | 6700 | 7800 | 9000 | 10100 | 11200 | 12300 | 13500 |

How many gallons are in my pool of 12′ X 33′ | 7400 | 8600 | 9900 | 11100 | 12300 | 13600 | 14800 |

How many gallons are in my pool of 12′ X 36′ | 8100 | 9400 | 10800 | 12100 | 13500 | 14800 | 16100 |

How many gallons are in my pool of 12′ X 39′ | 8700 | 10200 | 11700 | 13100 | 14600 | 16000 | 17500 |

How many gallons are in my pool of 12′ X 42′ | 9400 | 11000 | 12600 | 14100 | 15700 | 17300 | 18800 |

How many gallons are in my pool of 12′ X 45′ | 10100 | 11800 | 13500 | 15100 | 16800 | 18500 | 20200 |

How many gallons are in my pool of 12′ X 48′ | 10800 | 12600 | 14400 | 16100 | 17900 | 19700 | 21500 |

How many gallons are in my pool of 12′ X 52′ | 11700 | 13600 | 15600 | 17500 | 19400 | 21400 | 23300 |

How many gallons are in my pool of 12′ X 55′ | 12300 | 14400 | 16400 | 18500 | 20600 | 22600 | 24700 |

How many gallons are in my pool of 15′ X 30′ | 8400 | 9800 | 11200 | 12600 | 14000 | 15400 | 16800 |

How many gallons are in my pool of 15′ X 33′ | 9300 | 10800 | 12300 | 13900 | 15400 | 17000 | 18500 |

How many gallons are in my pool of 15′ X 36′ | 10100 | 11800 | 13500 | 15100 | 16800 | 18500 | 20200 |

How many gallons are in my pool of 15′ X 39′ | 10900 | 12800 | 14600 | 16400 | 18200 | 20000 | 21900 |

How many gallons are in my pool of 15′ X 42′ | 11800 | 13700 | 15700 | 17700 | 19600 | 21600 | 23500 |

How many gallons are in my pool of 15′ X 45′ | 12600 | 14700 | 16800 | 18900 | 21000 | 23100 | 25200 |

How many gallons are in my pool of 15′ X 48′ | 13500 | 15700 | 17900 | 20200 | 22400 | 24700 | 26900 |

How many gallons are in my pool of 15′ X 52′ | 14600 | 17000 | 19400 | 21900 | 24300 | 26700 | 29200 |

How many gallons are in my pool of 15′ X 55′ | 15400 | 18000 | 20600 | 23100 | 25700 | 28300 | 30800 |

How many gallons are in my pool of 18′ X 30′ | 10100 | 11800 | 13500 | 15100 | 16800 | 18500 | 20200 |

How many gallons are in my pool of 18′ X 33′ | 11100 | 13000 | 14800 | 16700 | 18500 | 20400 | 22200 |

How many gallons are in my pool of 18′ X 36′ | 12100 | 14100 | 16100 | 18200 | 20200 | 22200 | 24200 |

How many gallons are in my pool of 18′ X 39′ | 13100 | 15300 | 17500 | 19700 | 21900 | 24100 | 26200 |

How many gallons are in my pool of 18′ X 42′ | 14100 | 16500 | 18800 | 21200 | 23500 | 25900 | 28300 |

How many gallons are in my pool of 18′ X 45′ | 15100 | 17700 | 20200 | 22700 | 25200 | 27800 | 30300 |

How many gallons are in my pool of 18′ X 48′ | 16100 | 18800 | 21500 | 24200 | 26900 | 29600 | 32300 |

How many gallons are in my pool of 18′ X 52′ | 17500 | 20400 | 23300 | 26200 | 29200 | 32100 | 35000 |

How many gallons are in my pool of 18′ X 55′ | 18500 | 21600 | 24700 | 27800 | 30800 | 33900 | 37000 |

How many gallons are in my pool of 20′ X 30′ | 11200 | 13100 | 15000 | 16800 | 18700 | 20600 | 22400 |

How many gallons are in my pool of 20′ X 33′ | 12300 | 14400 | 16400 | 18500 | 20600 | 22600 | 24700 |

How many gallons are in my pool of 20′ X 36′ | 13500 | 15700 | 17900 | 20200 | 22400 | 24700 | 26900 |

How many gallons are in my pool of 20′ X 39′ | 14600 | 17000 | 19400 | 21900 | 24300 | 26700 | 29200 |

How many gallons are in my pool of 20′ X 42′ | 15700 | 18300 | 20900 | 23500 | 26200 | 28800 | 31400 |

How many gallons are in my pool of 20′ X 45′ | 16800 | 19600 | 22400 | 25200 | 28000 | 30800 | 33600 |

How many gallons are in my pool of 20′ X 48′ | 17900 | 20900 | 23900 | 26900 | 29900 | 32900 | 35900 |

How many gallons are in my pool of 20′ X 52′ | 19400 | 22700 | 25900 | 29200 | 32400 | 35600 | 38900 |

How many gallons are in my pool of 20′ X 55′ | 20600 | 24000 | 27400 | 30800 | 34300 | 37700 | 41100 |

How many gallons are in my pool of 21′ X 30′ | 11800 | 13700 | 15700 | 17700 | 19600 | 21600 | 23500 |

How many gallons are in my pool of 21′ X 33′ | 13000 | 15100 | 17300 | 19400 | 21600 | 23700 | 25900 |

How many gallons are in my pool of 21′ X 36′ | 14100 | 16500 | 18800 | 21200 | 23500 | 25900 | 28300 |

How many gallons are in my pool of 21′ X 39′ | 15300 | 17900 | 20400 | 23000 | 25500 | 28100 | 30600 |

How many gallons are in my pool of 21′ X 42′ | 16500 | 19200 | 22000 | 24700 | 27500 | 30200 | 33000 |

How many gallons are in my pool of 21′ X 45′ | 17700 | 20600 | 23500 | 26500 | 29400 | 32400 | 35300 |

How many gallons are in my pool of 21′ X 48′ | 18800 | 22000 | 25100 | 28300 | 31400 | 34500 | 37700 |

How many gallons are in my pool of 21′ X 52′ | 20400 | 23800 | 27200 | 30600 | 34000 | 37400 | 40800 |

How many gallons are in my pool of 21′ X 55′ | 21600 | 25200 | 28800 | 32400 | 36000 | 39600 | 43200 |

How many gallons are in my pool of 24′ X 30′ | 13500 | 15700 | 17900 | 20200 | 22400 | 24700 | 26900 |

How many gallons are in my pool of 24′ X 33′ | 14800 | 17300 | 19700 | 22200 | 24700 | 27100 | 29600 |

How many gallons are in my pool of 24′ X 36′ | 16100 | 18800 | 21500 | 24200 | 26900 | 29600 | 32300 |

How many gallons are in my pool of 24′ X 39′ | 17500 | 20400 | 23300 | 26200 | 29200 | 32100 | 35000 |

How many gallons are in my pool of 24′ X 42′ | 18800 | 22000 | 25100 | 28300 | 31400 | 34500 | 37700 |

How many gallons are in my pool of 24′ X 45′ | 20200 | 23500 | 26900 | 30300 | 33600 | 37000 | 40400 |

How many gallons are in my pool of 24′ X 48′ | 21500 | 25100 | 28700 | 32300 | 35900 | 39500 | 43100 |

How many gallons are in my pool of 24′ X 52′ | 23300 | 27200 | 31100 | 35000 | 38900 | 42800 | 46700 |

How many gallons are in my pool of 24′ X 55′ | 24700 | 28800 | 32900 | 37000 | 41100 | 45200 | 49300 |

How many gallons are in my pool of 25′ X 30′ | 14000 | 16400 | 18700 | 21000 | 23400 | 25700 | 28000 |

How many gallons are in my pool of 25′ X 33′ | 15400 | 18000 | 20600 | 23100 | 25700 | 28300 | 30800 |

How many gallons are in my pool of 25′ X 36′ | 16800 | 19600 | 22400 | 25200 | 28000 | 30800 | 33600 |

How many gallons are in my pool of 25′ X 39′ | 18200 | 21300 | 24300 | 27300 | 30400 | 33400 | 36400 |

How many gallons are in my pool of 25′ X 42′ | 19600 | 22900 | 26200 | 29400 | 32700 | 36000 | 39200 |

How many gallons are in my pool of 25′ X 45′ | 21000 | 24500 | 28000 | 31500 | 35000 | 38500 | 42100 |

How many gallons are in my pool of 25′ X 48′ | 22400 | 26200 | 29900 | 33600 | 37400 | 41100 | 44900 |

How many gallons are in my pool of 25′ X 52′ | 24300 | 28300 | 32400 | 36400 | 40500 | 44500 | 48600 |

How many gallons are in my pool of 25′ X 55′ | 25700 | 30000 | 34300 | 38500 | 42800 | 47100 | 51400 |

### B – Circular Pool

#### US Gallons

Size | Depth 3′ | Depth 3.5′ | Depth 4′ | Depth 4.5′ | Depth 5′ | Depth 5.5′ | Depth 6′ |

how many gallons are in my 10′ round pool | 1800 | 2100 | 2300 | 2600 | 2900 | 3200 | 3500 |

how many gallons are in my 11′ round pool | 2100 | 2500 | 2800 | 3200 | 3600 | 3900 | 4300 |

how many gallons are in my 12′ round pool | 2500 | 3000 | 3400 | 3800 | 4200 | 4700 | 5100 |

how many gallons are in my 13′ round pool | 3000 | 3500 | 4000 | 4500 | 5000 | 5500 | 6000 |

how many gallons are in my 14′ round pool | 3500 | 4000 | 4600 | 5200 | 5800 | 6300 | 6900 |

how many gallons are in my 15′ round pool | 4000 | 4600 | 5300 | 5900 | 6600 | 7300 | 7900 |

how many gallons are in my 16′ round pool | 4500 | 5300 | 6000 | 6800 | 7500 | 8300 | 9000 |

how many gallons are in my 17′ round pool | 5100 | 5900 | 6800 | 7600 | 8500 | 9300 | 10200 |

how many gallons are in my 18′ round pool | 5700 | 6700 | 7600 | 8600 | 9500 | 10500 | 11400 |

how many gallons are in my 19′ round pool | 6400 | 7400 | 8500 | 9500 | 10600 | 11700 | 12700 |

how many gallons are in my 20′ round pool | 7000 | 8200 | 9400 | 10600 | 11700 | 12900 | 14100 |

how many gallons are in my 21′ round pool | 7800 | 9100 | 10400 | 11700 | 12900 | 14200 | 15500 |

how many gallons are in my 22′ round pool | 8500 | 9900 | 11400 | 12800 | 14200 | 15600 | 17100 |

how many gallons are in my 23′ round pool | 9300 | 10900 | 12400 | 14000 | 15500 | 17100 | 18600 |

how many gallons are in my 24′ round pool | 10100 | 11800 | 13500 | 15200 | 16900 | 18600 | 20300 |

how many gallons are in my 25′ round pool | 11000 | 12800 | 14700 | 16500 | 18300 | 20200 | 22000 |

#### Imperial Gallons

Size | Depth 3′ | Depth 3.5′ | Depth 4′ | Depth 4.5′ | Depth 5′ | Depth 5.5′ | Depth 6′ |

how many gallons are in my 10′ round pool | 1500 | 1700 | 2000 | 2200 | 2400 | 2700 | 2900 |

how many gallons are in my 11′ round pool | 1800 | 2100 | 2400 | 2700 | 3000 | 3300 | 3600 |

how many gallons are in my 12′ round pool | 2100 | 2500 | 2800 | 3200 | 3500 | 3900 | 4200 |

how many gallons are in my 13′ round pool | 2500 | 2900 | 3300 | 3700 | 4100 | 4500 | 5000 |

how many gallons are in my 14′ round pool | 2900 | 3400 | 3800 | 4300 | 4800 | 5300 | 5800 |

how many gallons are in my 15′ round pool | 3300 | 3900 | 4400 | 5000 | 5500 | 6100 | 6600 |

how many gallons are in my 16′ round pool | 3800 | 4400 | 5000 | 5600 | 6300 | 6900 | 7500 |

how many gallons are in my 17′ round pool | 4200 | 4900 | 5700 | 6400 | 7100 | 7800 | 8500 |

how many gallons are in my 18′ round pool | 4800 | 5500 | 6300 | 7100 | 7900 | 8700 | 9500 |

how many gallons are in my 19′ round pool | 5300 | 6200 | 7100 | 7900 | 8800 | 9700 | 10600 |

how many gallons are in my 20′ round pool | 5900 | 6800 | 7800 | 8800 | 9800 | 10800 | 11700 |

how many gallons are in my 21′ round pool | 6500 | 7500 | 8600 | 9700 | 10800 | 11900 | 12900 |

how many gallons are in my 22′ round pool | 7100 | 8300 | 9500 | 10700 | 11800 | 13000 | 14200 |

how many gallons are in my 23′ round pool | 7800 | 9100 | 10300 | 11600 | 12900 | 14200 | 15500 |

how many gallons are in my 24′ round pool | 8500 | 9900 | 11300 | 12700 | 14100 | 15500 | 16900 |

how many gallons are in my 25′ round pool | 9200 | 10700 | 12200 | 13800 | 15300 | 16800 | 18300 |

## Summary

- Pool gallons can be calculated in 3 different ways
- 1 Cubic Foot = 7.48 US Gallons
- 1 Cubic Foot = 6.23 Imperial Gallons
- 1 Cubic meter = 264.17 US Gallons
- 1 Cubic meter = 220 Imperial gallons

If you have any questions or suggestions about this post please comment.

If you want to convert the volume unit into another unit then **click here**.

if you want to learn about gallon measurement then **click here**.