Horizontal Cylinder Tank Volume (gal, ft³)

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Calculate the volume and fill level of a horizontal cylindrical tank in gallons and cubic feet.

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Horizontal Cylindrical Tank Volume Calculator (Imperial)
Horizontal Cylindrical Tank

Water volume in a horizontal cylinder (flat ends)

Tank Dimensions
ft
in
ft
in
Common tank sizes
Water Level
ft
in
1' 3 3/4"
Results
Water Volume
0 US gal
Total Capacity
0 US gal
Filled
0 %
From Bottom
0 in
To Top
0 in
Water Weight
0 lb
Remaining
0 US gal
Water Volume
0 yd³
Total Capacity
0 yd³
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How to Calculate Horizontal Cylinder Volume in Imperial Units

Determine total and partial volume of horizontal cylindrical tanks in gallons and cubic feet. Enter diameter, length, and fill height in inches or feet.

Example: a 6-foot diameter tank that is 12 feet long holds about 2,527 gallons full. At 2 feet of fill, it contains approximately 518 gallons.

Uses circular segment geometry for accurate partial fill readings. Common for propane tanks, fuel oil tanks, and water cisterns.

Misha Noyr, M.Eng.

Misha Noyr, M.Eng.

Civil Engineer · 15+ yrs · structural design, geotechnics. Full bio ↓