Sphere - Radius from Volume

The Radius of a Sphere from the Volume calculator computes the radius (r) based on the volume of a sphere (V).

INSTRUCTIONS:  Choose units and enter the following:

• (V) Volume of Sphere.

Sphere Radius (r): The radius is returned in meters.  However, this can be automatically converted to other length units (e.g. feet) via the pull-down menu. 

The Math

The equation for the volume of a sphere is as follows:

            V = 4/3•π•r³

If we solve for the radius (r), we have the formula in this calculator:

            `r = ( 3/(4π)•V ) ^(1/3)`

Sphere Calculators

• Sphere Surface Area based radius (r)
• Sphere Surface Area from Volume
• Sphere Volume from Radius
• Sphere Volume from Circumference
• Sphere Volume from Surface Area
• Sphere Volume from Mass and Density
• Sphere Radius from Volume
• Sphere Radius from Surface Area
• Sphere Weight (Mass) from volume and density
• Sphere Density
• Area of Triangle on a Sphere
• Distance between Two Points on a Sphere
• Sphere Cap Surface Area
• Sphere Cap Volume
• Sphere Cap Weight (Mass) 
• Sphere Segment Volume
• Sphere Segment Weight (Mass)
• Sphere Segment Wall Surface Area (without the circular top and bottom ends)
• Sphere Segment Full Surface Area  (with the top and bottom circles, aka ends)
• Volume of Spherical Shell
• Mass of Spherical Shell