Tank dimensions in — gallons and liters out, for aquariums, rain barrels, stock tanks and cisterns.
Rectangular tanks are length × width × depth × <strong>7.48 gallons per cubic foot</strong>; cylindrical tanks are π × r² × depth × 7.48. The calculator handles both — use the average depth for tapered or partially buried tanks, and remember usable volume is less than brim volume on every real tank.
Yes — every calculator on this site is free, runs entirely in your browser, and requires no signup.
The formulas are the standard ones used in the trade, accurate to fractions of an inch or pound; add a small waste margin to every order.
Slabs and pads: cubic yards and bag counts in seconds.
Open →Cubic yards and tonnage for driveways, paths and bases.
Open →Cubic yards and 2-cu-ft bag counts for any bed size.
Open →Cubic yards and tons for bedding, play sand and fill.
Open →Cubic yards and tons for lawns, beds and leveling.
Open →Total bag count for any fence run, split per hole.
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