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 Use this table to calculate the volume of water in your aquarium.

Width cm

(inches)

25

(10")

30

(12")

38

(15")

46

(18")

Height cm

(inches)

25

(10")

30

(12")

38

(15")

46

(18")

30

(12")

38

(15")

46

(18")

61

(24")

30

(12")

38

(15")

46

(18")

61

(24")

76

(30")

Length cm (inches)                          
30 (12") litres

Imperial gallons

16.8

3.7

25.0

5.5

30.9

6.8

36.8

7.1

31.4

6.9

40.5

8.9

46.8

10.3

62.3

13.7

37.3

8.2

47.3

10.4

56.8

12.5

75.5

16.6

90.5

19.9

45 (18") litres

Imperial gallons

25.5

5.6

37.7

8.3

46.8

10.3

55.9

12.3

47.3

10.4

60.9

13.4

70.9

15.6

94.1

20.7

56.4

12.4

71.4

15.7

85.5

18.8

114.1

25.1

137.7

30.3

60 (24") litres

Imperial gallons

34.1

7.5

50.5

11.1

62.7

13.8

74.6

16.4

63.2

13.9

81.4

17.9

94.6

20.8

125.9

27.7

75.0

16.5

95.5

21.0

114.6

25.2

152.7

33.6

185.0

40.7

76 (30") litres

Imperial gallons

42.7

9.4

61.8

13.6

80.0

17.6

92.7

20.4

78.6

17.3

101.4

22.3

118.7

26.1

157.3

34.6

94.1

20.7

120.0

26.4

143.7

31.6

191.4

42.1

230.0

50.6

91 (36") litres

Imperial gallons

51.4

11.3

74.1

16.3

95.9

21.1

111.8

24.6

94.6

20.8

121.8

26.8

142.3

31.3

189.1

41.6

113.2

24.9

144.1

31.7

172.3

37.9

227.8

50.1

277.3

61.7

99 (36") litres

Imperial gallons

55.9

12.3

80.5

17.7

104.1

22.9

120.9

26.6

102.7

22.6

131.8

29.0

154.6

34.0

205.0

45.1

122.7

27.0

155.9

34.3

186.8

41.1

249.1

54.8

300.0

66.2

122(48") litres

Imperial gallons

69.1

15.2

99.1

21.8

128.2

28.2

149.6

32.8

126.8

27.9

162.7

35.8

187.3

41.2

248.7

54.7

150.0

33.0

191.4

42.1

226.4

49.8

302.3

66.5

369.6

81.3

152(60") litres

Imperial gallons

86.4

19.0

124.1

27.3

160.9

35.4

187.3

41.2

158.7

34.9

204.1

44.9

235.0

51.7

312.3

68.7

192.3

42.3

239.6

52.7

298.2

65.6

379.1

83.4

464.1

102.1

This table shows the approximate water capacity of aquariums of different sizes. Allowance has been made for the thickness of the glass and for a water level 2.5 cm (1") below the top. To use it, first find your aquarium width in the top section and then the approximate height in the section below it. Follow the selected height column down and read off the aquarium capacity where it coincides with the length of your aquarium.

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