Vitamin D (25(OH)D) Level Assessment

Enter your Vitamin D blood test result → Get evidence-based guidelines for sun exposure, diet, and supplementation
ng/mL
nmol/L
Adult (18-70)
Senior (70+)
Child (1-18)
Infant (0-1)
Please enter a valid number between 1 and 500
⚠️ Important: This tool provides educational information based on Endocrine Society guidelines. Always consult your healthcare provider for medical advice.

Educational Purpose Only • Not Medical Advice • Always Consult Your Healthcare Provider
Reference: Endocrine Society Clinical Practice Guidelines (2011), Institute of Medicine (2011), American Academy of Dermatology
Conversion: 1 ng/mL = 2.5 nmol/L • Optimal range: 30-50 ng/mL (75-125 nmol/L)
Vitamin D testing measures 25-hydroxyvitamin D [25(OH)D], the major circulating form