Physics

Calculate driveway lights needed, even spacing, endpoint positions, and a simple fixture-spread check for common layouts.

Estimate deck light count, total watts, transformer size, and low-voltage wire loss from spacing, fixture watts, and wire length.

Estimate patio lights to buy, brightness, edge spacing, power use, monthly energy, and optional cost from patio size and bulb data.

Size a low-voltage lighting run by checking transformer load, voltage drop, far-light voltage, current, and wire size.

Estimate hotel room fixture count, rated lumens, foot-candles, lux, and LED watts from room size and lighting assumptions.

Estimate hospital room fixtures, maintained lux, target reached, lumens needed, and optional watts per square foot.

Estimate gym fixtures, total lumens, average light, spacing, grid layout, and power from room size and fixture data.

Estimate retail fixtures, lumens, average foot-candles, power, and 30-day energy cost for a store area.

Estimate restaurant fixture count, foot-candles, lumens, Food Code minimum checks, watts, and yearly energy cost.

Estimate classroom fixtures, foot-candles, lux, fixture lumens, and optional lighting power from room size and fixture output.