Home > Products :: Reference Info > U.S. Gallons in Round Tanks
FOR ONE FOOT IN DEPTH
31-1/2 GALLONS EQUAL 1 BARRELTo find the capacity of tanks greater than the largest given in the table, look in the table for a tank of one-half of the given size and multiply its capacity by 4, or one of one-third its size and multiply its capacity by 9, etc.
A gallon of water (U.S. Standard) weights 8-1/3 pounds and contains 231 cubic inches.
A cubic foot of water contains 7-1/2 gallons, 1728 cubic inches, and weighs 62-1/2 pounds.
To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet x .434.
| Dia. Tanks | No. U.S. Gals. | Cu. Ft and Area in Sq. Ft. | |
|---|---|---|---|
| 1 | 0 | 5.87 | 0.785 |
| 1 | 1 | 6.89 | 0.922 |
| 1 | 2 | 8 | 1.069 |
| 1 | 3 | 9.18 | 1.227 |
| 1 | 4 | 10.44 | 1.396 |
| 1 | 5 | 11.79 | 1.5765 |
| 1 | 6 | 13.22 | 1.767 |
| 1 | 7 | 14.73 | 1.969 |
| 1 | 8 | 16.32 | 2.182 |
| 1 | 9 | 17.99 | 2.405 |
| 1 | 10 | 19.75 | 2.64 |
| 1 | 11 | 21.58 | 2.885 |
| 2 | 0 | 23.5 | 3.142 |
| 2 | 1 | 25.5 | 3.409 |
| 2 | 2 | 27.58 | 3.687 |
| 2 | 3 | 29.74 | 3.976 |
| 2 | 4 | 31.99 | 4.276 |
| 2 | 5 | 34.31 | 4.587 |
| 2 | 6 | 36.72 | 4.909 |
| 2 | 7 | 39.21 | 5.241 |
| 2 | 8 | 41.78 | 5.585 |
| 2 | 9 | 44.43 | 5.94 |
| 2 | 10 | 47.16 | 6.305 |
| 2 | 11 | 49.98 | 6.681 |
| 3 | 0 | 52.88 | 7.069 |
| 3 | 1 | 55.86 | 7.467 |
| 3 | 2 | 58.92 | 7.876 |
| 3 | 3 | 62.06 | 8.296 |
| 3 | 4 | 65.28 | 8.727 |
| 3 | 5 | 68.58 | 9.168 |
| 3 | 6 | 71.97 | 9.621 |
| 3 | 7 | 75.44 | 10.085 |
| 3 | 8 | 78.99 | 10.559 |
| 3 | 9 | 82.62 | 11.045 |
| 3 | 10 | 86.33 | 11.541 |
| 3 | 11 | 90.13 | 12.048 |
| 4 | 0 | 94 | 12.566 |
| 4 | 1 | 97.96 | 13.095 |
| 4 | 2 | 102 | 13.635 |
| 4 | 3 | 106.12 | 14.186 |
| 4 | 4 | 110.32 | 14.748 |
| 4 | 5 | 114.61 | 15.321 |
| 4 | 6 | 118.97 | 15.9 |
| 4 | 7 | 123.42 | 16.5 |
| 4 | 8 | 127.95 | 17.1 |
| 4 | 9 | 132.56 | 17.72 |
| 4 | 10 | 137.25 | 18.35 |
| 4 | 11 | 142.02 | 18.99 |
| 5 | 0 | 146.88 | 19.63 |
| 5 | 1 | 151.82 | 20.29 |
| 5 | 2 | 156.83 | 20.97 |
| 5 | 3 | 161.93 | 21.65 |
| 5 | 4 | 167.12 | 22.34 |
| 5 | 5 | 172.38 | 23.04 |
| 5 | 6 | 177.72 | 23.76 |
| 5 | 7 | 183.15 | 24.48 |
| 5 | 8 | 188.66 | 25.22 |
| 5 | 9 | 194.25 | 25.97 |
| 5 | 10 | 199.92 | 26.73 |
| 5 | 11 | 205.67 | 27.49 |
| 6 | 0 | 211.51 | 28.27 |
| 6 | 3 | 229.5 | 30.68 |
| 6 | 6 | 248.23 | 33.18 |
| 6 | 9 | 267.69 | 35.78 |
| 7 | 0 | 287.88 | 38.48 |
| 7 | 3 | 308.81 | 41.28 |
| 7 | 6 | 330.48 | 44.18 |
| 7 | 9 | 352.88 | 47.77 |
| 8 | 0 | 376.01 | 50.27 |
| 8 | 3 | 399.88 | 53.46 |
| 8 | 6 | 424.48 | 56.75 |
| 8 | 9 | 449.82 | 60.13 |
| 9 | 0 | 475.89 | 63.62 |
| 9 | 3 | 502.7 | 67.2 |
| 9 | 6 | 530.24 | 70.88 |
| 9 | 9 | 558.51 | 74.66 |
| 10 | 0 | 587.52 | 78.54 |
| 10 | 3 | 617.26 | 82.52 |
| 10 | 6 | 640.74 | 86.59 |
| 10 | 9 | 678.95 | 90.76 |
| 11 | 0 | 710.9 | 95.03 |
| 11 | 3 | 743.58 | 99.4 |
| 11 | 6 | 776.99 | 103.87 |
| 11 | 9 | 811.14 | 108.43 |
| 12 | 0 | 846.03 | 113.1 |
| 12 | 3 | 881.65 | 117.86 |
| 12 | 6 | 918 | 122.72 |
| 12 | 9 | 955.09 | 127.68 |
| 13 | 0 | 992.91 | 132.72 |
| 13 | 3 | 1031.5 | 137.89 |
| 13 | 6 | 1070.8 | 143.14 |
| 13 | 9 | 1110.8 | 148.49 |
| 14 | 0 | 1151.5 | 153.94 |
| 14 | 3 | 1193 | 159.48 |
| 14 | 6 | 1235.3 | 165.13 |
| 14 | 9 | 1278.2 | 170.87 |
| 15 | 0 | 1321.9 | 176.71 |
| 15 | 3 | 1366.4 | 182.65 |
| 15 | 6 | 1411.5 | 188.69 |
| 15 | 9 | 1457.4 | 194.83 |
| 16 | 0 | 1504.1 | 201.06 |
| 16 | 3 | 1551.4 | 207.39 |
| 16 | 6 | 1599.5 | 213.82 |
| 16 | 9 | 1648.4 | 220.35 |
| 17 | 0 | 1697.9 | 226.98 |
| 17 | 3 | 1748.2 | 233.71 |
| 17 | 6 | 1799.3 | 240.53 |
| 17 | 9 | 1851.1 | 247.45 |
| 18 | 0 | 1903.6 | 254.47 |
| 18 | 3 | 1956.8 | 261.59 |
| 18 | 6 | 2010.8 | 268.8 |
| 18 | 9 | 2065.5 | 276.12 |
| 19 | 0 | 2120.9 | 283.53 |
| 19 | 3 | 2177.1 | 291.04 |
| 19 | 6 | 2234 | 298.65 |
| 19 | 9 | 2291.7 | 306.35 |
| 20 | 0 | 2350.1 | 314.16 |
| 20 | 3 | 2409.2 | 322.06 |
| 20 | 6 | 2469.1 | 330.06 |
| 20 | 9 | 2529.6 | 338.16 |
| 21 | 0 | 2591 | 346.36 |
| 21 | 3 | 2653 | 354.66 |
| 21 | 6 | 2715.8 | 363.05 |
| 21 | 9 | 2779.3 | 371.54 |
| 22 | 0 | 2843.6 | 380.13 |
| 22 | 3 | 2908.6 | 388.82 |
| 22 | 6 | 2974.3 | 397.61 |
| 22 | 9 | 3040.8 | 406.49 |
| 23 | 0 | 3108 | 415.48 |
| 23 | 3 | 3175.9 | 424.56 |
| 23 | 6 | 3244.6 | 433.74 |
| 23 | 9 | 3314 | 443.01 |
| 24 | 0 | 3384.1 | 452.39 |
| 24 | 3 | 3455 | 461.86 |
| 24 | 6 | 3526.6 | 471.44 |
| 24 | 9 | 3598.9 | 481.11 |
| 25 | 0 | 3672 | 490.87 |
| 25 | 3 | 3745.8 | 500.74 |
| 25 | 6 | 3820.3 | 510.71 |
| 25 | 9 | 3895.6 | 520.77 |
| 26 | 0 | 3971.6 | 530.93 |
| 26 | 3 | 4048.4 | 541.19 |
| 26 | 6 | 4125.9 | 551.55 |
| 26 | 9 | 4204.1 | 562 |
| 27 | 0 | 4283 | 572.66 |
| 27 | 3 | 4362.7 | 583.21 |
| 27 | 6 | 4443.1 | 593.96 |
| 27 | 9 | 4525.3 | 604.81 |
| 28 | 0 | 4606.2 | 615.75 |
| 28 | 3 | 4688.8 | 626.8 |
| 28 | 6 | 4772.1 | 637.94 |
| 28 | 9 | 4856.2 | 649.18 |
| 29 | 0 | 4941 | 660.52 |
| 29 | 3 | 5026.6 | 671.96 |
| 29 | 6 | 5112.9 | 683.49 |
| 29 | 9 | 5199.9 | 695.13 |
| 30 | 0 | 5287.7 | 706.86 |
| 30 | 3 | 5376.2 | 718.69 |
| 30 | 6 | 5465.4 | 730.62 |
| 30 | 9 | 5555.4 | 742.64 |
| 31 | 0 | 5646.1 | 754.77 |
| 31 | 3 | 5773.5 | 766.99 |
| 31 | 6 | 5829.7 | 779.31 |
| 31 | 9 | 5922.6 | 791.33 |
| 32 | 0 | 6016.2 | 804.25 |
| 32 | 3 | 6110.6 | 816.86 |
| 32 | 6 | 6205.7 | 829.58 |
| 32 | 9 | 6301.5 | 842.39 |