Tank volume calculator sizes cylindrical, rectangular, and capsule storage tanks.
About this calculator
Tank volume calculator sizes cylindrical, rectangular, and capsule storage tanks. Enter dimensions in metres. You get volume in litres (standard in India), US gallons, and cubic metres.
A 1 m radius × 2 m tall vertical cylinder holds about 6,283 litres — enough for a small apartment overhead tank. Rectangular sumps for rainwater harvesting use length × width × depth. Capsule tanks (cylinder with rounded ends) appear in fuel and LPG transport.
For construction concrete volume see [[cubic-yards]] and [[gravel]]. Water flow rates pair with [[speed]] and pipe sizing. Household users comparing RO storage can cross-check with [[water-intake]] daily needs.
Common uses
- Sizing 1000-litre overhead water tank for Bangalore apartment
- Calculating diesel storage tank capacity for generator backup
- Rainwater harvesting sump volume for 2000 sq ft roof
- Chemical plant engineer verifying reactor vessel capacity
- Aquaculture pond volume estimate before stocking fish
Frequently asked questions
How many litres in a 1 m radius × 2 m high cylinder?
Volume = π × 1² × 2 ≈ 6.28 m³ = 6,283 litres. Enter radius 1, height 2, shape cylinder to verify.
What is the difference between vertical and horizontal cylinder calculation?
This calculator models vertical cylinders (full height fill). Horizontal tanks need partial-fill geometry when not full — enter total volume here for a full tank baseline.
How do I size a rooftop water tank for a family of four in India?
Plan 150–200 litres per person per day buffer. A family of four needs 600–800 litres minimum storage for one day
What is a capsule tank shape?
A cylinder with hemispherical ends — common for tanker trucks and pressure vessels. Total volume = cylinder middle section plus one full sphere (two hemispheres).