Cylindrical Tank Volume Tables
Volume Formula of a Flat Head Cylinder
Note: Volume is in Cubic Feet, Diameter in Inches, and Length is in Feet
V = 0.7854 x (D/12)^2 x L
To convert Cubic Feet to Gallons multiply Cubic Feet amount by 7.48
To convert Gallons to Cubic Feet multiply Gallons amount by 0.1337
Note: Due to different head designs, the below tables provide only an estimated volume. Upon disagreements with volumes taken from this table, owner should be allowed to provide more exact calculations for the specific tank.
Volumes 12 cubic foot volume and above which require inspection, registration and a valid permit to operate per Boiler Code sections SPS 341.17 and 341.24.
Volume in Gallons
Diameter | Tank Length in Feet | |||||||||
(inches/feet) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
24 / 2.0 | 24 | 47 | 71 | 94 | 118 | 141 | 165 | 188 | 212 | 235 |
26 / 2.17 | 28 | 55 | 83 | 111 | 138 | 166 | 194 | 221 | 249 | 277 |
28 / 2.33 | 32 | 64 | 96 | 128 | 159 | 191 | 223 | 255 | 287 | 319 |
30 / 2.5 | 37 | 73 | 110 | 147 | 184 | 220 | 257 | 294 | 330 | 367 |
32 / 2.67 | 42 | 84 | 126 | 168 | 209 | 251 | 293 | 335 | 377 | 419 |
34 / 2.83 | 47 | 94 | 141 | 188 | 235 | 282 | 329 | 376 | 423 | 471 |
36 / 3.0 | 53 | 106 | 159 | 212 | 264 | 317 | 370 | 423 | 476 | 529 |
38 / 3.17 | 59 | 118 | 177 | 236 | 295 | 354 | 413 | 472 | 531 | 590 |
40 / 3.33 | 65 | 130 | 195 | 261 | 326 | 391 | 456 | 521 | 586 | 651 |
42 / 3.5 | 72 | 144 | 216 | 288 | 360 | 432 | 504 | 576 | 648 | 720 |
48 / 4.0 | 94 | 188 | 282 | 376 | 470 | 564 | 658 | 752 | 846 | 940 |
54 / 4.5 | 119 | 238 | 238 | 476 | 595 | 714 | 833 | 952 | 1071 | 1190 |
60 / 5.0 | 147 | 294 | 294 | 588 | 734 | 881 | 1028 | 1175 | 1322 | 1469 |
Volume in Cubic Feet
Diameter | Tank Length in Feet | |||||||||
(inches/feet) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
24 / 2.0 | 3.2 | 6.3 | 9.5 | 12.6 | 15.8 | 18.9 | 22.0 | 25.1 | 28.3 | 31.4 |
26 / 2.17 | 3.7 | 7.4 | 11.1 | 14.8 | 18.4 | 22.2 | 25.9 | 29.5 | 33.3 | 37.0 |
28 / 2.33 | 4.3 | 8.6 | 12.8 | 17.1 | 21.3 | 25.5 | 29.8 | 34.1 | 38.4 | 42.6 |
30 / 2.5 | 4.9 | 9.8 | 14.7 | 19.7 | 24.6 | 29.4 | 34.4 | 39.3 | 44.1 | 49.1 |
32 / 2.67 | 5.6 | 11.2 | 16.8 | 22.5 | 27.9 | 33.6 | 39.2 | 44.8 | 50.4 | 56.0 |
34 / 2.83 | 6.3 | 12.6 | 18.9 | 25.1 | 31.4 | 37.7 | 44.0 | 50.3 | 56.6 | 63.0 |
36 / 3.0 | 7.0 | 14.2 | 21.3 | 28.3 | 35.3 | 42.4 | 49.5 | 56.6 | 63.6 | 70.7 |
38 / 3.17 | 7.9 | 15.8 | 23.7 | 31.6 | 39.4 | 47.3 | 55.2 | 63.1 | 71.0 | 78.9 |
40 / 3.33 | 8.7 | 17.4 | 26.1 | 34.9 | 43.6 | 52.3 | 61.0 | 69.7 | 78.3 | 87.0 |
42 / 3.5 | 9.6 | 19.3 | 28.9 | 38.5 | 48.1 | 58.8 | 67.4 | 77.0 | 86.6 | 96.3 |
48 / 4.0 | 12.6 | 25.1 | 37.7 | 50.3 | 62.8 | 75.4 | 88.0 | 100.5 | 113.1 | 125.7 |
54 / 4.5 | 15.9 | 31.8 | 47.7 | 63.6 | 79.5 | 95.5 | 111.4 | 127.3 | 143.2 | 159.1 |
60 / 5.0 | 19.7 | 39.3 | 59.0 | 78.6 | 98.1 | 117.8 | 137.4 | 157.1 | 176.7 | 196.4 |
