Optical Geometry Calculator

Five geometry tools in one: angle conversion, beam displacement from mirror tilt, parallel plate displacement, solid angle, and alignment error propagation.

Input
Equivalent Angles
Degrees
45.000°
Radians
0.78540rad
Milliradians
785.4mrad
Microradians
785398.2µrad
Arcminutes
2700.0′
Arcseconds
162000.0″
Abridged Optics — Optical Geometry Calculator v1.0Paraxial results use small-angle approximation (sin θ ≈ θ). Exact results use full trigonometry.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.