LED Fixture PPF Output Calculator

What this calculator estimates

Convert fixture power and rated efficacy into an estimated total PPF.

How the calculation works

Multiply electrical draw in watts by photon efficacy in micromoles per joule.

How to use the result

Enter values that represent the current setup, review the estimate, and compare it with measurements and equipment documentation before making operational changes.

Important limitations

Manufacturer efficacy may be measured under laboratory conditions. Wall draw, dimming, temperature and driver losses can change actual output.

This calculator is a planning aid. Recheck assumptions whenever equipment, crop size, room conditions or schedules change.