Vitamin D Status Calculator
Interpret your vitamin D (25-hydroxyvitamin D) level and get personalized supplementation recommendations.
Important Health Disclaimer
This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.
For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.
Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.
Not a substitute for professional medical advice
Lab Results
Risk Factors
Vitamin D Status
30.0 ng/mL
(75.0 nmol/L)
Sufficient
Interpretation
Vitamin D level is within the optimal range.
Supplementation Recommendations
Loading dose: Not needed
Maintenance: 600-1000 IU/day (maintenance)
Target level: 30-50 ng/mL
Time to target: Already at target
Monitoring
- • Annual monitoring if on supplementation
Reference Ranges
< 12 ng/mL: Severe deficiency
12-19 ng/mL: Deficiency
20-29 ng/mL: Insufficiency
30-100 ng/mL: Sufficient
> 100 ng/mL: Potential toxicity
Disclaimer: This calculator provides general guidance. Vitamin D requirements vary by individual. High-dose supplementation should be monitored by a healthcare provider. Some conditions require active vitamin D forms.
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