Updated May 2, 2026
Formula References
Formula sources used to check each calculator.
These sources are used as formula checks and background reading.
Cylinder Surface Area Calculator
SA = 2πr(r + h)
Triangular Prism Surface Area Calculator
SA = PL + 2B
Rectangular Prism / Cuboid Calculator
SA = 2lw + 2lh + 2wh
Sphere Surface Area Calculator
SA = 4πr²
Cone Surface Area Calculator
SA = πr(r + √(r² + h²))
Pyramid Surface Area Calculator
SA = base + lateral faces
Cube Surface Area Calculator
SA = 6a²
Trapezoidal Prism Surface Area Calculator
SA = PL + 2B
Right Triangular Prism Calculator
SA = (a + b + c)L + ab
Generic Prism Surface Area Calculator
SA = PL + 2B
Ellipsoid Surface Area Calculator
SA ≈ 4π[((a^1.6b^1.6 + a^1.6c^1.6 + b^1.6c^1.6) / 3)]^(1/1.6)
Torus Surface Area Calculator
SA = 4π²Rr
Body Surface Area (BSA) Calculator
BSA = √(height × weight / 3600)
Pool Surface Area Calculator
Area depends on pool shape
Pipe Surface Area Calculator
SA = 2πRL + 2πrL + 2π(R² - r²)
Hollow Cylinder Surface Area Calculator
Lateral SA = 2πL(R + r)
Capsule Surface Area Calculator
SA = 4πr² + 2πrh
Spherical Cap Surface Area Calculator
SA = 2πRh + πr²
Conical Frustum Surface Area Calculator
SA = π(R² + r²) + π(R + r)√((R - r)² + h²)