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The curvature in general is measured as 1/r, where r is the radius of an inscribed circle. Since mean curvature is the average of the two principal curvatures it has the units of 1/mm. The Gaussion curvature is the product of them, so it is 1/mm^2. |

The curvature in general is measured as 1/r, where r is the radius of an inscribed circle. Since mean curvature is the average of the two principal curvatures it has the units of 1/mm. The Gaussion curvature is the product of them, so it is 1/mm^2.

see Mean Curvature