Lumen Calculator
Use this lighting planning workflow to estimate lumens for a room before checking fixture photometrics and project criteria.
Open calculatorLumens, footcandles, fixture count, and lighting energy estimate workflows.
Use this lighting planning workflow to estimate lumens for a room before checking fixture photometrics and project criteria.
Open calculatorEnter existing and replacement fixture wattage, quantity, operating schedule, electricity rate, and optional project cost for a transparent retrofit estimate.
Open calculatorEnter room dimensions, mounting height, spacing criterion, and fixture lumens for a first-pass layout estimate.
Open calculatorUse this LED driver load workflow for early lighting circuit load screening when driver wattage, quantity, power factor, and multiplier are known.
Open calculatorUse this lighting circuit load workflow for early branch-load screening when fixture watts, quantity, multiplier, voltage, phase, and comparison breaker value are known.
Open calculatorUse this footcandle workflow to estimate average illuminance from entered lumens and area before checking a full lighting layout.
Open calculatorUse this emergency lighting battery workflow for early battery capacity screening when load, runtime, voltage, derating, efficiency, and reserve assumptions are known.
Open calculator