Use this tool to calculate the estimated additional Vitamin D intake needed for children to reach their target vitamin D serum level (40-60 ng/ml recommended by our scientist panel).
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Need more help on what to do with your D calculator results? Read here
Targeting:
**Note: Dose capped at maximum safe intake for indicated weight.
This recommended dose is based on the experience of other children and adults who took vitamin D. It is important to recheck your serum 25-hydroxyvitamin D level in 3-4 months.
References
Dahlen A, van Haren KP, Mazahery H, Aliano JL, McDonnell S, von Hurst PR, Camargo CA Jr. Statistical modeling and an online calculator for vitamin D pharmacokinetics in children. (Submitted for publication, July 2025)
