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`M = "mD" * pi* "r" ^2 *( l - 2/3* "r" )`

Enter a value for all fields

The **Weight (Mass) of a Capsule** calculator computes mass or weight of a capsule, also known as a spherocylinder. * Capsule - Spherocylinder *

**INSTRUCTIONS:** Choose units (e.g. meters or feet) and enter the following:

- (
**r**) - This is the radius (half the diameter) of the spherical ends of the capsule. - (
**l**) - This is the overall length of the capsule. Note, the length must be equal to or greater than two times the radius (2xr). - (
**mD**) - This is the mean density of the substance contained in the capsule.**[mD Lookup]**

**Capsule Mass (M):** The calculator computes the mass in kilograms. However this can be automatically converted in the many other mass or weight units (e.g. pounds, metric tons) via the pull-down menu.

- For the Surface area of a Capsule
**, CLICK HERE.** - For the Volume of a Capsule,
**CLICK HERE.**

Note: the formula assumes hemispheres (half spheres) on either side of the capsule cylinder.

Geometrically, a capsule is a cylinder of any length (l) with two hemispheres on either end where the radius (r) of the cylinder is equal to the radius of the hemispheres. See diagram. This formula computes the volume of the geometric shape based on the input parameters. With the computed volume, this formula then executes the simple equation below to compute the approximate mass of the object.

The mean density (mD or μ_{density}) of many common substances, elements, liquids and materials can be found by ** CLICKING HERE **(e.g. the μ_{density} of water is 1000.0 kg/m³).

Spherocylinders are found in many applications. The most common are in capsule containers such small pills and large containers such as liquid or gas transport containers.