Oppervlaktecalculator
Calculators
Free online surface area calculators for every 3D shape — sphere, cylinder, cone, cube, prism, pyramid, ellipsoid, torus, and more. Instant results with step-by-step breakdowns.
26 Calculators
7 Categories
6 Unit systems
Round Shapes
Spheres, cones, cylinders, and other curved-surface solids
Cilinder-oppervlaktecalculator
SA = 2πr(r + h)Bol-oppervlaktecalculator
SA = 4πr²Kegel-oppervlaktecalculator
SA = πr(r + √(r² + h²))Ellipsoïde calculator
SA ≈ 4π[((a^1.6b^1.6 + a^1.6c^1.6 + b^1.6c^1.6) / 3)]^(1/1.6)Torus calculator
SA = 4π²RrCapsule calculator
SA = 4πr² + 2πrhBolkap calculator
SA = 2πRh + πr²Afgeknotte kegel calculator
SA = π(R² + r²) + π(R + r)√((R - r)² + h²)Prisms & Cubes
Rectangular, triangular, trapezoidal, and generic prisms
Pyramids
Square-base and triangular-base pyramids
Health & Science
Body surface area and medical calculators
Project Tools
Pool, room, and practical project estimators
Industrial
Pipes, hollow cylinders, and engineering shapes