Finding the volume / capacities of various objects is generally quite simple, just follow these formulas.

## Finding the volume of a Rectangular Tank

- V = volume
- L = length
- H = height
- W = width

#### Formula

**V = L x W x H**

- To find the volume in Liters:
- Measure the tank in centimeters and divide the result by 1000. (Example: 13cm x 11cm x 28cm = 4004cm3 4004cm3 /1000 = 4.004 L)
- Measure the tank in meters and multiply by 1000.

- To find the volume in US gallons:
- Measure the tank in inches and divide by 231.
- Measure the tank in feet and multiply by 7.48.

## Finding the volume of a Cylindrical Tank

- V = volume
- D = diameter
- L = length

#### Formula

**V = D x D x 0.7854 x L **or** V = ****∏R****2****L**

- To find the volume in Liters:
- Measure the tank in centimeters and divide the result by 1000.

(Example: 10cm x 10cm x 0.7854 x 30cm = 2356.2cm3) (2356.2cm3 / 1000 = 2.36 L) - Measure the tank in meters and multiply by 1000.

- Measure the tank in centimeters and divide the result by 1000.
- To find the volume in US gallons:
- Measure the tank in inches and divide by 231.
- Measure the tank in feet and multiply by 7.48.

## Finding the volume of an Elliptical Tank

- V = volume
- L = length
- W = width
- H = height

#### Formula

**V = H x W x 0.7854 x L**

- To find the volume in Liters:
- Measure the tank in centimeters and divide the result by 1000.

(EX: 20cm x 10cm x 0.7854 x 30cm = 4712.4cm3) (4712.4cm3 / 1000 = 4.71 L) - Measure the tank in meters and multiply by 1000.

- Measure the tank in centimeters and divide the result by 1000.
- To find the volume in US gallons:
- Measure the tank in inches and divide by 231.
- Measure the tank in feet and multiply by 7.48.

## Finding the volume of a Spherical Tank

- V = volume
- D3 = diameter cubed

#### Formula

- To find the volume in Liters:
- Measure the tank in centimeters and divide the result by 1000.

(EX: 20cm x 20cm x 20cm x 0.5236 = 4188.8cm3) (4188.8cm3 / 1000 = 4.19 L) - Measure the tank in meters and multiply by 1000.

- Measure the tank in centimeters and divide the result by 1000.
- To find the volume in US gallons:
- Measure the tank in inches and divide by 231.
- Measure the tank in feet and multiply by 7.48.

## Finding the volume of a Frustum Tank

A frustum can be multi-sided or conical, the formula below will work for both.

- V = volume
- H = height between bases
- B1 = area of upper base
- B2 = area of lower base

#### Formula

- To find the volume in Liters:
- Measure the tank in centimeters and divide the result by 1000.
- Measure the tank in meters and multiply by 1000.

- To find the volume in US gallons:
- Measure the tank in inches and divide by 231.
- Measure the tank in feet and multiply by 7.48.