Sphere Surface Area and Volume Calculator
Sphere Surface Area and Volume Calculator
Enter the radius of a sphere to find its surface area and volume.
What is a sphere?
A sphere is a perfectly round 3D shape where every point on the surface is equidistant from the center.
Sphere formulas:
- Surface Area: A = 4πr²
- Volume: V = (4/3)πr³
- Diameter: d = 2r
- Circumference: C = 2πr
Real-world examples:
- Balls and spherical objects
- Planets and celestial bodies
- Bubbles and droplets
- Architectural domes
Frequently Asked Questions
How to find sphere surface area?
Surface area of sphere: A = 4πr², where r is the radius.
How to find sphere volume?
Volume of sphere: V = (4/3)πr³, where r is the radius.
What units should I use for radius?
Enter radius in meters, centimeters, or any unit - results will be in corresponding square and cubic units.
What's the relationship between diameter and radius?
Diameter is twice the radius: d = 2r. So if you have diameter, divide by 2 to get radius.