👱 Tank Volume Calculator
Horizontal cylinder, vertical cylinder, and rectangular tanks
Results
Total Capacity
—
US gal
Fill Volume
—
US gal
% Full
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%
Total (ft³)
—
ft³
Formulas
Horizontal Cylinder: V = πr²L (full) | Partial fill uses circular segment formula
Vertical Cylinder: V = πr²h
Rectangular: V = L × W × H
📝 Worked Example
Horizontal cylinder tank: 48 in diameter, 96 in long, filled to 36 in.
Full capacity = π(24)² × 96 = 173,472 in³ = 750.5 US gal
Fill at 36 in (75% diameter) ≈ 485 US gal (64.6% full)
Total: 750.5 gal | Filled: 485 gal at 36 in level