Calculate Vitamin D Dose
Calculate your recommended Vitamin D dosage based on age and sun exposure.
Recommended Daily IU
—
The Methodology
Endocrine Society Guidelines
This tool uses the verified professional formula shown above. We cite our sources so you can trust every result.
How it works
This tool provides a baseline recommendation following standard health guidelines. It accounts for the fact that most Vitamin D is synthesized via skin exposure to UVB rays.