Red Light Dose Calculator

Calculate your optimal red light therapy dose based on your device’s actual irradiance output. Enter your panel specs and treatment goals to get personalized session times.

How to Use This Calculator

Start by entering your device’s irradiance in mW/cm² at your treatment distance. If you don’t know the real number, check the independent comparison database where I publish spectroradiometer-verified readings for every panel I’ve tested. Manufacturer specs are often inflated, so using verified data gives you accurate session times.

For the science behind why dose matters, read how red light therapy works. For a deeper dive into the math and wavelength-specific protocols, see the dosage guide. And if you’re still choosing a device, the buyer’s guide covers which specs actually matter.

Browse all tested panels in the red light therapy devices roundup, or read about the testing methodology behind the data.