Use this hemisphere surface area calculator for classroom geometry, sketches, and quick plan checks when you want a direct answer without rewriting the formula by hand.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
surface area = 3 x pi x radius^2This total includes the curved half-sphere plus the flat circular base.
If you want only the curved portion, subtract one circle area.
Next: hemisphere curved surface area.
Next: hemisphere total surface area.
This cone surface area calculator helps when radius, slant height are already known and you want the surface area quickly.