円柱の体積計算機

共有リンク

はじめに

Cylinder Volume Calculator — Volume and surface area of a cylinder. Enter Radius, Height to get an instant, accurate result.

計算式

Volume = πr²h. Surface area = 2πr(r + h).

ステップごとの説明

Enter the Radius.
Enter the Height.
Click Calculate to see your result instantly.

実例

Example: With Radius = 3, Height = 10, the Cylinder Volume Calculator gives Volume: 282.7433, Surface Area: 245.0442.

よくある質問

Does surface area include the top and bottom?

Yes, the formula accounts for both circular ends plus the curved side.

What if I only know the diameter?

Divide it by 2 to get the radius before entering it.

What inputs does the Cylinder Volume Calculator need?

You'll need to provide: Radius, Height. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Cylinder Volume Calculator?

The Cylinder Volume Calculator applies the formula exactly as calculated — Volume = πr²h. Surface area = 2πr(r + h). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Cylinder Volume Calculator free to use?

Yes, the Cylinder Volume Calculator is completely free, requires no signup, and runs instantly in your browser.