Vitamin D & Sun Exposure Calculator
Find out exactly how many minutes of sun you need to produce 1,000 IU of vitamin D based on your skin type, location, and season.
Type II — Fair, usually burns, sometimes tans
Results
Minutes Needed
to produce 1,000 IU
Produced in 30 min
with current conditions
Supplementation Recommendation
Current conditions support adequate vitamin D synthesis through sun exposure
Seasonal UV-B Availability
UV-B potential at solar noon throughout the year for your latitude.
Disclaimer: This calculator provides estimates for educational purposes only and is not medical advice. Vitamin D synthesis depends on many individual factors. Consult your doctor before starting supplementation, especially if you are deficient or have underlying health conditions.
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Vitamin D Calculator: How Much Sun Do You Really Need?
9 min