Cylindrical Tank Capacity

Base area times height in cm³, divided by 1,000, gives litres. Since a litre of water weighs a kilogram, the weight is the same number.

Your numbers

Diameter(cm)Height(cm)

Litres

282.74L

Water weight

282.7kg

Volume

0.2827m³

Formula

Litres = π × (Diameter ÷ 2)² × Height ÷ 1000

Tanks are never filled to the brim — plan on about 90% of this figure.

What to enter

Input	Default	Accepted range
Diameter (cm)The longest line across a circle — twice the radius.	60	0 and up
Height (cm)The perpendicular height from the base — not the slanted side.	100	0 and up

Step by step

FormulaLitres = π × (Diameter ÷ 2)² × Height ÷ 1000

With the default numbersLitres = π × (60 ÷ 2)² × 100 ÷ 1000

AnswerLitres = 282.74 L

Quick reference table

Results when only Diameter (cm) changes and everything else stays put.

Diameter (cm)	Litres (L)	Water weight (kg)	Volume (m³)
30	70.69	70.7	0.0707
45	159.04	159	0.159
60	282.74	282.7	0.2827
90	636.17	636.2	0.6362
120	1,130.97	1,131	1.131

What each result means

Result	At default values
Litres (L)Capacity in litres; one litre is 1,000 cm³.	282.74
Water weight (kg)The weight of the water inside; a litre weighs a kilogram.	282.7
Volume (m³)The space a solid holds — length cubed.	0.2827

Common mistakes

Tanks are never filled to the brim — plan on about 90% of this figure.

Glossary

Diameter: The longest line across a circle — twice the radius.
Height: The perpendicular height from the base — not the slanted side.
Litres: Capacity in litres; one litre is 1,000 cm³.
Water weight: The weight of the water inside; a litre weighs a kilogram.
Volume: The space a solid holds — length cubed.

Frequently asked questions

QHow is Cylindrical Tank Capacity calculated?

Litres = π × (Diameter ÷ 2)² × Height ÷ 1000 — Base area times height in cm³, divided by 1,000, gives litres. Since a litre of water weighs a kilogram, the weight is the same number.

QCan you walk through an example?

With Diameter 60cm, Height 100cm, the answer is Litres 282.74L.

QWhat do I need to enter?

Enter Diameter, Height. The result recalculates as you type, and an empty box counts as zero.

QHow much does the answer move if I change a number?

Changing only Diameter (cm) moves the answer to Diameter (cm) 30 → Litres (L) 70.69 and Diameter (cm) 120 → Litres (L) 1,130.97. The table below lays out five steps.

QHow are the numbers rounded?

Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.

QAnything to watch out for?

Tanks are never filled to the brim — plan on about 90% of this figure.

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Keep your length units consistent across inputs — mixing centimetres and metres throws results far off.