Units & Conversions

SI units, photonics-specific units, and conversions. Wavelength/frequency/wavenumber calculators, power/energy conversion.

Comprehensive Guide

Full academic treatment with worked examples, SVG diagrams, and cited references.

Available now →
Abridged Guide

Concise quick-reference with key equations, decision tables, and practical workflows.

Available now →
Tools & Calculators

Interactive design tools — enter parameters, get component recommendations.

Spectral Unit Converter →Photon Flux Calculator →Radiometric ↔ Photometric Converter →Angular Unit Converter →Laser Line Quick Reference →
5 tools available →
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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.