Hemisphere Surface Area Calculator

Calculate curved, base, and total surface area for a hemisphere.

Last updated: June 2026 | By Patchworkr Team

Hemisphere Radius

Radius

Radius is required.

Curved area = 2pi r^2. Base area = pi r^2. Total hemisphere surface area = 3pi r^2.

Live Results

Enter a valid radius to see results.

Formulas

Curved area: 2pi r^2

Base area: pi r^2

Total surface area: 3pi r^2

Example: r = 6

Curved area: 2pi(6^2) = 72pi about 226.19467106

Base area: pi(6^2) = 36pi about 113.09733553

Total area: 108pi about 339.29200659

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