How to Calculate Water Tank Capacity in Litres – A Complete Guide

Published on [Date] | By SEATECH Team

When setting up a water tank for your house, business, or industrial space, a key consideration is figuring out the tank's capacity in litres. In this blog, we’ll walk you through everything you need to know about water tank calculation, using a tank volume calculator, and why choosing from trusted ISI water tank manufacturers in Kerala like SEATECH is the smart choice.

Why Is Water Tank Calculation Important?

Proper water tank sizing ensures:

Key Benefits:

  • Consistent water supply for daily use
  • Cost-effective infrastructure planning
  • Avoids overflows and structural strain
  • Maximizes water usage efficiency

Whether it’s for residential, agricultural, or commercial use, accurate water tank calculation is the foundation of efficient water management.

Water Tank Capacity Formula (Litres)

The formula depends on the shape of your tank. For a cylindrical tank, the standard formula is

Volume (Litres) = π × Radius² × Height × 1000
Where:
  • π = 3.1416
  • Radius and Height are in meters
  • To convert cubic meters into litres, simply multiply the result by 1000
Example:

If your tank has a radius of 0.5 m and a height of 1.5m:

Volume = 3.1416 × (0.5)² × 1.5 × 1000 = 1178.1 litres

Result: Your tank can hold approximately 1178 litres of water

Use a Tank Volume Calculator for Quick Results

Manual calculations can sometimes be confusing. That’s why SEATECH offers a handy tank volume calculator on our website.

To use it:

  • Select the tank shape (cylindrical, rectangular, square)
  • Enter dimensions (height, radius/diameter/length & width)
  • Get the result instantly in litres

Try a Water Tank Volume Calculator for Instant Capacity Estimates

This tool is ideal for homeowners, engineers, and plumbers looking for quick and accurate results.

Top Reasons to Trust ISI-Certified Water Tank Suppliers in Kerala

When it comes to water storage, quality and durability should never be compromised. SEATECH is one of the leading ISI water tank manufacturers in Kerala, offering premium-quality tanks with certified standards.

Why SEATECH Tanks?

  • ISI Certified – Tested for quality and safety
  • UV Stabilized – Protects from sunlight damage
  • Food-Grade Material – Safe for drinking water
  • Durable Designs – Withstand pressure and climate variations
  • Available in all sizes

We deliver the perfect balance of strength, safety, and affordability.

Ready to Get Your Perfect Water Tank?

Contact SEATECH today for expert advice and premium quality water tanks that last for decades.

Get Quote Now

Conclusion

Understanding how to determine water tank capacity in litres is crucial when designing an efficient and dependable water storage system. Whether you prefer using the formula manually or a fast tank volume calculator, this guide gives you the clarity you need. And when it comes to durability and trust, choose SEATECH — your go-to ISI water tank manufacturer in Kerala.