This calculator helps estimate Vitamin D needs and potential deficiency risks based on various factors.
Start with your values, or try a preset.
Enter Current Vitamin D Level (ng/mL), Age (Years), Skin Color, Average Daily Sun Exposure (minutes), and Daily Dietary Vitamin D Intake (IU) in the units shown.
Read Estimated Daily Vitamin D Needs (IU), Vitamin D Status, and Potential Deficiency Risk in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Current Vitamin D Level (ng/mL): 25 ng/mL; Age (Years): 28 years; Skin Color: Fair; Average Daily Sun Exposure (minutes): 15-30 minutes; Daily Dietary Vitamin D Intake (IU): 400 IU
Estimated Daily Vitamin D Needs (IU): 600; Vitamin D Status: Insufficient; Potential Deficiency Risk: Moderate
Current Vitamin D Level (ng/mL): 20 ng/mL; Age (Years): 75 years; Skin Color: Fair; Average Daily Sun Exposure (minutes): 0-15 minutes; Daily Dietary Vitamin D Intake (IU): 600 IU
Estimated Daily Vitamin D Needs (IU): 800; Vitamin D Status: Insufficient; Potential Deficiency Risk: High
Current Vitamin D Level (ng/mL): 35 ng/mL; Age (Years): 8 years; Skin Color: Fair; Average Daily Sun Exposure (minutes): 30-60 minutes; Daily Dietary Vitamin D Intake (IU): 400 IU
Estimated Daily Vitamin D Needs (IU): 600; Vitamin D Status: Sufficient; Potential Deficiency Risk: Low
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