Zinc Intake Calculator
Written by Thierno Sadou Diallo, formula verified per our methodology • Last checked on 9/5/2026
The percentage of the recommended zinc intake is calculated with (zinc consumed ÷ recommended intake) × 100. The recommended intake is 11 mg/day for a man and 8 mg/day for a woman; with 8 mg consumed, a man reaches about 73% of his target.
Explanation
Zinc is a trace element essential to a well-functioning immune system, wound healing, and many of the body's enzymatic reactions. The recommended intake set by ANSES, the French food safety agency (a figure broadly consistent with recommendations from other national health authorities), differs by sex: 11 mg per day for an adult man, versus 8 mg per day for an adult woman, a gap linked to average differences in body and muscle mass between the sexes. The best dietary sources of zinc include oysters (particularly rich, far above other common foods), red meat, pumpkin seeds, legumes, and dairy products. One important point: phytates, compounds found notably in whole grains and legumes, reduce the body's absorption of zinc, which can justify a slightly higher real need for people whose diet contains a lot of them (vegetarian or vegan diets rich in grains and legumes, for example). Unlike many other micronutrients, excess zinc from supplementation carries a real risk worth watching: ANSES sets a safety limit of 25 mg per day across all sources combined, since excessive, prolonged intake can notably impair the body's absorption of copper. For another mineral involved in immunity and wound healing, see our iron intake calculator.
Example: a man, 8 mg of zinc consumed
Inputs
Zinc consumed: 8 mg. Sex: male (recommended intake 11 mg/day).
Calculation
Percentage of recommended intake = (8 ÷ 11) × 100 ≈ 72.73%.
Result
This intake covers about 73% of the recommended zinc intake for this profile.
Frequently asked questions
Why is the recommended zinc intake higher for men than for women?
Mainly due to a higher average body and muscle mass in men, which increases zinc needs, a mineral involved in many cellular processes proportional to body mass. This gap (11 mg versus 8 mg) follows the same logic as other nutrients whose recommended intake varies by sex.
Why do phytates reduce zinc absorption?
Phytates, found notably in whole-grain bran and legumes, bind to zinc in the digestive tract and form complexes the body absorbs poorly. This is why real zinc needs can be slightly higher for a diet very rich in unprocessed whole grains and legumes (soaking or sprouting these foods before eating partly reduces this effect).
Is too much zinc really dangerous?
Beyond the 25 mg per day safety limit set by ANSES (across all sources combined), excessive and prolonged zinc intake, usually from supplementation rather than diet alone, can interfere with copper absorption and eventually cause a copper deficiency. Zinc supplementation beyond normal diet should always be discussed with a healthcare professional.