Estimate your daily vitamin D needs based on location, skin type, and sun exposure
Fill out the form and click calculate to see your personalized vitamin D recommendations.
Supplementation Needed
0 IU
Vitamin D is essential for bone health, immune function, and mood regulation. Your body produces it when your skin is exposed to sunlight, but many people don't get enough due to location, skin type, or lifestyle factors.
Darker skin types (V-VI) require more sun exposure to produce the same amount of vitamin D as lighter skin types (I-II). This calculator adjusts recommendations based on your Fitzpatrick skin type classification.