BMI Calculator
Body Mass Index is a quick screen for weight relative to height. Add your waist measurement for a second, often more useful signal.
General information, not a diagnosis or treatment plan. Do not change medication, diet or training based on this result — discuss it with a qualified healthcare professional. Read the full disclaimer.
Your BMI
Healthy rangeYour BMI sits in the healthy range. Keep doing what you are doing.
What to pay attention to
- BMI is a screen, not the whole picture — waist size and body composition matter too.
- For hiking, add 2–3 strength sessions a week to protect knees and ankles.
- Weigh yourself at the same time of day and watch the trend, not daily noise.
Educational estimate only — not medical advice. Talk to a healthcare professional before changing your diet, training or medication.
How BMI is calculated
BMI = weight in kilograms ÷ (height in metres)². It is a population-level screen: it does not tell the difference between muscle and fat. Very muscular hikers often read as "overweight" without carrying excess fat.
- Underweight: below 18.5
- Healthy range: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obese: 30 and above
Waist-to-height ratio is a simple complement: keep your waist under half your height. It flags fat around the middle, which is linked to heart and metabolic risk.