Calculadora IMC (BMI Calculator)
Use this simple tool to estimate your Body Mass Index using either metric or imperial units.
What is IMC?
IMC is short for Índice de Masa Corporal (also called BMI, Body Mass Index). It is a screening measurement that compares your weight to your height. The goal is not to diagnose health conditions by itself, but to give a quick signal of whether your body weight is in a commonly accepted range.
The standard formula is simple: your weight divided by the square of your height. In metric terms, that is kilograms divided by meters squared. In imperial units, the formula applies a conversion factor (703).
How to use this calculadora.imc
Metric mode (kg/cm)
- Select Metric in the unit dropdown.
- Enter your weight in kilograms.
- Enter your height in centimeters.
- Click Calculate IMC to see your score and range.
Imperial mode (lb/ft/in)
- Select Imperial.
- Enter weight in pounds.
- Enter height in feet and inches.
- Click Calculate IMC.
IMC categories
| IMC Value | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 - 24.9 | Healthy Weight |
| 25.0 - 29.9 | Overweight |
| 30.0 - 34.9 | Obesity (Class I) |
| 35.0 - 39.9 | Obesity (Class II) |
| 40.0 and above | Obesity (Class III) |
What IMC is good for—and what it misses
IMC is useful as a population-level and first-pass health screening tool. It can help identify potential risk trends related to cardiovascular disease, diabetes, and metabolic health. However, it does not directly measure body fat, muscle mass, hydration status, or fat distribution.
For example, athletes with high muscle mass can show a high IMC but still be metabolically healthy. On the other hand, someone with a “normal” IMC may still have low muscle mass or high visceral fat. That is why IMC should be considered together with other measures such as waist circumference, blood pressure, blood glucose, and lipid profile.
How to improve your IMC in a sustainable way
1) Build a nutrition baseline
Focus on whole foods, enough protein, fiber-rich vegetables, and appropriate calorie intake for your goal. Avoid extreme dieting; consistency beats intensity.
2) Move with intention
Combine resistance training (to preserve or build lean mass) with regular walking or cardio. A practical starting target is 7,000-10,000 daily steps plus 2-4 strength sessions each week.
3) Protect recovery
Sleep quality and stress management are central to appetite control, energy, and hormone balance. Try to maintain a regular sleep schedule and reduce high-stimulation evening routines.
Frequently asked questions
Is IMC the same for men and women?
The formula is the same, but body composition can differ by sex and age. That is why IMC should be interpreted in context.
Can I use IMC for children?
Children and teens require age- and sex-specific percentile charts, not the adult cutoffs shown above.
How often should I check IMC?
Once every few weeks is usually enough for trend monitoring. Daily fluctuations in body weight are normal and do not necessarily reflect fat changes.
Medical note: This calculator provides an estimate for educational purposes and is not a diagnosis. For personalized guidance, consult a licensed healthcare professional.