Daily Iron Requirement Calculator
Enter your age, sex, and status to find your daily iron requirement.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
Recommended daily iron intake (RDA) varies sharply by age, sex, and reproductive status — for example, around 8 mg/day for adult men, 18 mg/day for menstruating adult women (to replace iron lost monthly), 27 mg/day during pregnancy, and lower amounts for young children and older adults — alongside a tolerable upper intake level (commonly 45 mg/day for adults) above which supplementation risks toxicity.
Dietitians, healthcare providers, and individuals checking their own diet or supplement dose use this calculator to find their specific target rather than relying on a single generic number, since iron needs differ so widely between, say, a pregnant woman and an adult man that a one-size-fits-all figure would be misleading for most people.
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