BMI formula is the same for all genders
You're in the healthy range. Maintain your weight with balanced nutrition and regular exercise.
Your BMI is 24.2, which falls in the Normal range (18.5–24.9).
For your height of 170 cm, a healthy BMI range (18.5–24.9) corresponds to 53.5–72.0 kg
This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
Understand your body metrics, set realistic goals, plan nutrition, and build a sustainable fitness routine.
Assess your fitness baseline, set a goal pace, build a training plan, and prepare nutrition, gear, and race-day strategy.
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BMI is calculated by dividing weight by height squared. Use metric (kg/m²) or imperial units with the 703 conversion factor.
Metric: BMI = weight(kg) / height(m)² | Imperial: BMI = (weight(lbs) × 703) / height(inches)²Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), Obese (≥30). These ranges apply to adults and are screening guidelines, not diagnostic thresholds.
The BMI Calculator uses peer-reviewed equations (WHO, Mifflin-St Jeor, Harris-Benedict, or domain-specific standards). Results are general wellness estimates, not medical diagnoses.
Metric = f(height, weight, age, activity, …)Updated: July 2026
A routine health screening for an adult at 70kg and 175cm to check weight category.
→ BMI: 22.9 — Normal weight
Athletes may have a high BMI due to muscle mass rather than excess body fat. BMI alone doesn't distinguish muscle from fat.
→ BMI: 27.8 — Overweight by BMI, but may be healthy for muscular individuals
A gym member records height and weight in the BMI Calculator to establish a baseline BMI and revisits monthly to track progress toward a goal.
BMI doesn't distinguish between muscle and fat. Consider body fat percentage, waist circumference, fitness level, and other health markers for a complete picture.
Children need age-and-sex-specific BMI percentile charts (CDC/WHO growth charts). Adult BMI thresholds do not apply to pediatric populations.
Body Mass Index (BMI) is a screening tool that estimates body fat based on height and weight. While BMI doesn't measure body fat directly, it correlates with more direct measures and helps identify potential weight-related health risks.