Aquarium Volume Calculation Tables

The volume charts below provide a rough guide to the volume of water held in rectangular aquariums.

Metric Volume Table

Width (cm) 20 25 30 38 45
Depth (cm) 20 25 30 38 45 30 38 45 30 38 45 60
Length (cm)
Volume (Litres)
30 10 15 23 29 35 29 37 44 35 44 53 70
38 12 19 27 34 41 34 43 53 41 52 62 83
45 15 24 35 44 53 44 56 67 53 67 80 107
60 20 33 47 59 71 59 74 89 71 89 107 143
90 30 49 71 89 107 89 112 134 107 134 161 215
120 40 65 95 119 143 119 149 179 143 179 215 287

Imperial Volume Table

Width (in) 8 10 12 15 18
Depth (in) 8 10 12 15 18 12 15 18 12 15 18 24
Length (in)
Volume (Gallons)
12 2 4 5 6 8 6 8 10 8 10 12 16
15 3 4 6 7 9 7 9 12 9 12 14 18
18 4 5 8 10 12 10 12 15 12 15 18 24
24 5 7 10 13 16 13 16 20 16 20 24 31
36 7 11 16 20 24 20 25 30 24 30 35 47
48 9 15 21 26 32 26 33 39 32 39 47 63