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Mechanical Engineering3D

Tank Volume Calculator

Calculate the volume of a cylindrical tank from diameter and height.

Inputs
Enter your values below
Result
Volume
—
Enter values and click Calculate
Formula
π × (diameter ÷ 2)² × height × 1000
Result unit: L

Cylinder volume V = πr²h where r = diameter/2. d and h in meters. ×1000 converts m³ to liters.

Introduction

Calculate the volume of a vertical or horizontal cylindrical tank. This is used for storage tank sizing, capacity planning, and inventory calculations.

How This Calculator Works

Cylinder volume V = πr²h where r = diameter/2. d and h in meters. ×1000 converts m³ to liters.

Step-by-step process:

  1. Enter your input values in the calculator above
  2. The engine converts all inputs to SI base units (meters, kg, Pa)
  3. The formula is evaluated: pi * (diameter / 2)^2 * height * 1000
  4. Result is formatted with the appropriate unit and precision

Calculation Example

A 3m diameter × 6m tall cylindrical tank holds approximately 42,412 liters (42.4 m³).

Inputs: diameter=3, height=6
Result: 42412 L

Unit Conversion for Tank Volume

**Volume units**

- 1 m³ = 1000 L = 264.17 US gal = 219.97 imp gal

- 1 US gal = 3.785 L

- 1 bbl (oil) = 42 US gal = 0.159 m³

**Length units**

- 1 m = 3.28084 ft

- 1 inch = 25.4 mm

Tank volume V = π/4 × D² × L (cylindrical) requires consistent units. Convert diameter and length to the same unit before computing, then convert the result to the desired volume unit.

Engineering Applications

  • •Storage tank sizing
  • •Capacity planning
  • •Process vessel design
  • •Inventory management

Frequently Asked Questions

Does this include dished ends?

No, this calculates straight cylinder volume only. For dished ends, add approximately 10-15% additional volume depending on head type.

How do I calculate horizontal tank partial volume?

Partial volume (with liquid level) requires the circular segment formula, which is a separate calculation.

How do I convert tank volume between m³ and gallons?

1 m³ = 1000 L = 264.17 US gallons. For example, a 50 m³ tank holds 13,208 US gallons. Convert using these factors for fill and hydrotest planning.

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Engineering Disclaimer: Calculations are for reference and educational purposes only. Always verify results independently for engineering design. See full disclaimer.
Reviewed by: Industrial Engineering Team
References: ASME B31.3, ASTM A36, Perry's Chemical Engineers' Handbook