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Vitamin C

Vitamin C: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

Vitamin C

Ageyears
Male sex (1 = yes)
Pregnancy (1 = yes)
Breastfeeding (1 = yes)
Smoking (1 = yes)
Vitamin C requirement
90mg/day
NIH / IOM (USA) values, RDA; for infants — adequate intake (AI)Vitamin C: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Category
Adults 19–70 years
Tolerable upper intake level
2000mg/day

More about: Vitamin C

What it calculates

The “Vitamin C” calculator computes Vitamin C requirement in mg/day from 5 parameters: age (years), male sex (1 = yes), pregnancy (1 = yes), breastfeeding (1 = yes), smoking (1 = yes).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Age = 30 years, Male sex (1 = yes) = 1, Pregnancy (1 = yes) = 0, Breastfeeding (1 = yes) = 0, Smoking (1 = yes) = 0 the result is 90 mg/day (NIH / IOM (USA) values, RDA; for infants — adequate intake (AI)).

How to use

  1. Enter age, male sex (1 = yes), pregnancy (1 = yes), breastfeeding (1 = yes) and smoking (1 = yes) — each field above is adjustable with a slider.
  2. Vitamin C requirement (mg/day) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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