MARINE / Cylindrical Tank Volume Calculator

Cylindrical Tank Volume Calculator

Calculate capacity and current liquid volume for a vertical, flat-bottomed cylindrical tank.

Inputs

Updates as you type

Tank inside diameter

Tank height

Liquid height

Results

Decimal places

Liquid volume

3.77m³

Results
Liquid volume	3,769.911 L
Liquid volume	995.905 US gal
Total tank volume	6.283 m³
Total tank volume	6,283.185 L
Total tank volume	1,659.842 US gal
Remaining volume	2.513 m³
Remaining volume	2,513.274 L
Remaining volume	663.937 US gal
Fill percentage	60 %

Overview

Calculate capacity and current liquid volume for a vertical, flat-bottomed cylindrical tank.

Formula

Abase = πD²/4
Vtotal = Abase × H
Vliquid = Abase × h
Fill [%] = 100h/H

Example

A 2 m inside diameter, 2 m high tank filled to 1.2 m has approximately 6.283 m³ total capacity, 3.770 m³ liquid and 60% fill.

How to use

Check the units, enter the required values and select the available calculation options.
Results update immediately. Correct any highlighted input before using the result.
Choose display precision, copy the result or share the current inputs. Reset restores the example values.

Engineering notes

The cylinder must be vertical with a flat bottom. Domed or conical ends are not included.
Use actual internal dimensions; displaced volume from internals is excluded.

Frequently asked questions FAQ

Can this be used for a horizontal cylindrical tank?

No. A horizontal cylinder requires a circular-segment formula because liquid height and volume are not proportional.

Does display precision change the calculation?

No. Rounding is applied only to displayed results, not intermediate calculations. Small nonzero values use scientific notation. Consider the precision of the original measurements when interpreting results.

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