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Simple Rectangular Pool  
metres   feet
Enter dimensions of pool Metres   Feet Inches   Volume of water
Length (L):     cu metres:
Width (W):     litres:
Minimum Depth (D1):     imp gallons:
Maximum Depth (D2):     us gallons:
(If the pool has a flat bottom,
enter the same figure for max and min depth.)
 

Circular Pool  
metres   feet
Dimensions of pool Metres   Feet Inches   Volume of water
Diameter (d):     cu metres:
Minimum Depth (D1):     litres:
Maximum Depth (D2):     imp gallons:
            us gallons:
(If the pool has a flat bottom,
enter the same figure for max and min depth.)
 

Eliptical Pool  
metres   feet
Enter dimensions of pool Metres   Feet Inches   Volume of water
Major Diameter (a):     cu metres:
Minor Diameter (b):     litres:
Minimum Depth (D1):     imp gallons:
Maximum Depth: (D2)     us gallons:
(If the pool has a flat bottom,
enter the same figure for max and min depth.)
 
Irregular Pool  
metres   feet
Enter dimensions of pool Metres   Feet Inches   Volume of water
Area (A):       cu metres:
Depth (D):     litres:
            imp gallons:
            us gallons:
(If you have several depths,
break up your area calculation for each depth.)
For irregular shapes, calculating the area is less accurate. You will need to draw up the pool accurately to scale on graph paper using a square on the paper to represent a metre (or foot) square of pool. When you have finished, count the squares. For partial squares, count anything over half as one and ignore any under a half. When you have the area (A) multiply by depth (D) for the Volume in cubic metres. If you have several depths, break up your area calculation for each depth.
 

Conversion into different units.

(Results are rounded to 4 decimal places)

cubic metres to litres - Multiply by 1000
cubic metres:   litres:
cubic metres to UK gallons - Multiply by 219.969
cubic metres:   UK gallons:
UK gallons to litres - Multiply by 4.54609
UK gallons:   litres:
US gallons to litres - Multiply by 3.785411
US gallons:   litres:
UK gallons to US gallons - Multiply by 1.20095
UK gallons:   US gallons:
US gallons to UK gallons - Multiply by 0.832674
US gallons:   UK gallons: