☀️ Vitamin D Dosage Calculator
Estimate your optimal daily vitamin D intake based on personal factors, sun exposure, and target blood levels. Get personalized IU recommendations and track your progress.
Step 1: Your Profile
Why these matter
Age affects skin synthesis. Heavier individuals may need higher doses. Darker skin (higher type) reduces vitamin D production from sun. Sun exposure lowers required supplementation.
Step 2: Levels & Strategy
About vitamin D dosing
Typical maintenance ranges from 800–4000 IU/day. Higher loading doses may be used short-term under medical supervision. Our estimates are for informational purposes.
📊 Your Vitamin D Plan
Recommended Daily Dosage
Dosage Comparison (3-month projection)
| Daily Dose | Est. Level after 90 days | Increase (ng/mL) | Safety Note |
|---|
Simulated Level Over 6 Months
How we estimate
1000 IU/day typically raises serum levels by ~10 ng/mL over 90 days for a 70 kg adult with minimal sun. We adjust for weight, sun exposure, and skin type. Results are estimates—consult a professional.
👩⚕️ Speak with a healthcare provider
Before starting high-dose vitamin D, consult your doctor. Get personalized advice based on blood work and medical history.
Find a Specialist