Systèmes de coordonnées

Convert between Cartesian (x,y,z), cylindrical (ρ,φ,z), spherical (r,θ,φ) with θ measured from +z, and 2D polar in the xy plane.

How to use

• Pick a source system, enter numbers (spaces or commas), toggle radians if needed.
• All four representations are shown; polar mode fixes z = 0.