This free blue light exposure calculator estimates how much screen-based blue light you get daily and what it may mean for your eyes and sleep quality.

Blue light from phones, computers, and tablets can contribute to digital eye strain and may interfere with your natural sleep cycle. This calculator provides a simple estimate of your daily exposure based on screen habits and filter usage.
Use the results as a general wellness guide—not a medical diagnosis—and adjust your screen routine to support healthier eyes and better sleep.