Vitamin D Sun Exposure Calculator
Estimate how much vitamin D your body can produce from sun exposure based on age, skin type, and time spent outdoors.
Vitamin D Production Chart for US
Vitamin D synthesis changes by skin type and sun exposure. For a 30-minute sun session:
- Very Fair skin: ~3000 IU
- Fair skin: ~2700 IU
- Medium skin: ~2250 IU
- Olive skin: ~1800 IU
- Brown skin: ~1350 IU
- Dark Brown skin: ~900 IU
Older adults over 50 may produce roughly 20% less than younger adults. Body coverage significantly impacts vitamin D, with full body exposure producing up to 10 times more than just face and hands.
