Polar to Cartesian Converter (r,θ) → (x,y). Radius Angle (°) x 4.33 y 2.5 Step-by-step with your numbers: 1. Values used: 2. Radius = 5 3. Angle = 30 ° 4. x = 4.33 5. y = 2.5 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! x = r·cosθ, y = r·sinθ. FAQ Reverse? r=√(x²+y²); θ=atan2(y,x). Related calculators Unit Circle Calculator Coordinates on the unit circle. Spherical Coordinates Calculator Convert Cartesian (x, y, z) to spherical (ρ, θ, φ). Cylindrical Coordinates Calculator Convert Cartesian (x, y, z) to cylindrical (r, θ, z).