Reference
Aquarium tank sizes
52 common tank dimensions with calculated water volume, filled weight, recommended glass thickness, heater wattage, and substrate. Pick a size to get every number you need before you buy.
Standard glass tanks
Aqueon/Marineland-style stock dimensions sold at every chain store. These are the sizes 'a 75 gallon' refers to.
Standard 10 gallon
20 × 10 × 12 in · 10 US gal
15 gallon
24 × 12 × 12 in · 15 US gal
20 gallon high
24 × 12 × 16 in · 20 US gal
20 gallon long
30 × 12 × 12 in · 19 US gal
Standard 29 gallon
30 × 12 × 18 in · 28 US gal
30 gallon breeder
36 × 18 × 12 in · 34 US gal
33 gallon long
48 × 12 × 12 in · 30 US gal
37 gallon tall
30 × 12 × 22 in · 34 US gal
40 gallon breeder
36 × 18 × 16 in · 45 US gal
40 gallon long
48 × 12 × 16 in · 40 US gal
45 gallon tall
36 × 12 × 24 in · 45 US gal
Standard 50 gallon
36 × 18 × 19 in · 53 US gal
36 × 18 × 18 in aquarium
36 × 18 × 18 in · 50 US gal
Standard 55 gallon
48 × 13 × 21 in · 57 US gal
65 gallon
36 × 18 × 24 in · 67 US gal
Standard 75 gallon
48 × 18 × 21 in · 79 US gal
90 gallon
48 × 18 × 24 in · 90 US gal
48 × 24 × 18 in aquarium
48 × 24 × 18 in · 90 US gal
100 gallon
60 × 18 × 20 in · 94 US gal
48 × 24 × 20 in aquarium
48 × 24 × 20 in · 100 US gal
120 gallon
48 × 24 × 24 in · 120 US gal
125 gallon
72 × 18 × 21 in · 118 US gal
150 gallon
72 × 18 × 28 in · 157 US gal
180 gallon
72 × 24 × 25 in · 187 US gal
210 gallon
72 × 24 × 30 in · 224 US gal
220 gallon
72 × 24 × 29 in · 217 US gal
Reef-specific & rimless (Innovative Marine, Waterbox, Red Sea)
Branded all-in-one and rimless tanks designed for reefkeeping. Dimensions from manufacturer spec sheets.
Innovative Marine NUVO 10
20 × 10 × 10 in · 9 US gal
Innovative Marine NUVO 20
21 × 16 × 14 in · 20 US gal
Innovative Marine NUVO 30L
24 × 18 × 16 in · 30 US gal
Innovative Marine NUVO 40
24 × 20 × 16 in · 33 US gal
Red Sea Reefer 170
32 × 20 × 18 in · 50 US gal
Innovative Marine NUVO 50
30 × 18 × 18 in · 42 US gal
Waterbox Rimless 50.3
30 × 20 × 18 in · 47 US gal
Innovative Marine NUVO 75
30 × 18 × 20 in · 47 US gal
Red Sea Reefer 250
36 × 22 × 21 in · 72 US gal
Waterbox Rimless 85.3
36 × 20 × 20 in · 62 US gal
Red Sea Reefer 350
48 × 22 × 21 in · 96 US gal
Waterbox Peninsula 100.3
36 × 24 × 22 in · 82 US gal
Red Sea Reefer 525 XL
60 × 24 × 24 in · 150 US gal
By dimensions (custom builds)
Common 'I have an X by Y by Z tank' questions for custom and acrylic builds.
36 × 18 × 18 in aquarium
36 × 18 × 18 in · 50 US gal
36 × 18 × 24 in aquarium
36 × 18 × 24 in · 67 US gal
48 × 24 × 18 in aquarium
48 × 24 × 18 in · 90 US gal
48 × 24 × 20 in aquarium
48 × 24 × 20 in · 100 US gal
60 × 24 × 20 in aquarium
60 × 24 × 20 in · 125 US gal
72 × 24 × 20 in aquarium
72 × 24 × 20 in · 150 US gal
Don't see your tank?
Use the aquarium volume calculator for any custom dimensions, including bow-front, hex, cylinder, and cube tanks. For weight, glass, and heater sizing of custom builds, run the dedicated calculators with your own numbers.
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