GFR (eGFR)
Calculate GFR (eGFR) instantly with the exact formula and a worked example. Free online calculator — no signup.
GFR (eGFR)
Cr, µmol/L
Age
1=male
eGFR (MDRD)
94.3327mL/min/1.73m²
More about: GFR (eGFR)
What it calculates
The “GFR (eGFR)” calculator computes eGFR (MDRD) in mL/min/1.73m² from 3 parameters: cr, µmol/l, age, 1=male.
Used by professionals and patients to assess health metrics, dosages, and risks.
Example calculation
With parameters Cr, µmol/L = 80, Age = 50, 1=male = 1 the result is 94.33 mL/min/1.73m².
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.
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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.