Lighting Tools

5 free online tools for lighting professionals.

These lighting calculators are built for theatre technicians and live event teams, with practical workflows for planning, troubleshooting, and fast technical checks during production. Includes: DIP Switch Calculator, DMX Address Calculator, Beam / Throw Calculator, CT / CRI Calculator, Gel Colour Swatches.

DIP Switch Calculator

Convert between DMX addresses (1–512) and DIP switch positions online. Toggle switches interactively or type an address to see the binary pattern.

DMX Address Calculator

Convert between absolute and universe-relative DMX512 addresses online. Plan fixture layouts, check channel ranges, and calculate DMX patching for free.

Beam / Throw Calculator

Calculate beam and field diameters from throw distance and beam angle. Work backwards from a desired coverage area. Free online tool with visual diagrams.

CT / CRI Calculator

Convert between Kelvin and Mired, calculate correction gels for colour temperature shifts, and look up CRI values for common stage lamp types.

Gel Colour Swatches

Browse Lee and Rosco gel colour swatches sorted by hue. View hex colour values and gel details for stage lighting design and planning.

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