BMI Calculator

Enter your weight and height — in lbs/kg or ft/cm — and see your Body Mass Index, WHO category, healthy weight range, and a visual scale showing exactly where you land.

Healthy BMI18.5 – 24.9

Daily Calories2,000 – 2,500(avg adult)

Sleep Cycle90 min(per cycle)

Body Mass Index

25.8

Overweight

Weight

lbs

Height

BMI Scale

Under- weight

< 18.5

Normal

18.5–24.9

Over- weight

25–29.9

Obese

≥ 30

Healthy weight range for your height

Minimum (BMI 18.5)128.9 lbs (58.5 kg)

Maximum (BMI 24.9)173.5 lbs (78.7 kg)

Convert weight to kg

kg = lbs ÷ 2.20462

= 180 lbs ÷ 2.20462

= 81.65 kg

Convert height to cm

cm = (feet × 12 + inches) × 2.54

= (5 × 12 + 10) × 2.54

= 177.8 cm

BMI calculation

BMI = weight_kg ÷ height_m²

= 81.65 ÷ (1.778)² = 81.65 ÷ 3.16128

= 25.8 → Overweight

WHO Global Database on Body Mass Index, 2000

WHO category thresholds

= < 18.5 Underweight · 18.5–24.9 Normal · 25–29.9 Overweight · ≥ 30 Obese

Healthy weight for your height: 128.9–173.5 lbs (58.5–78.7 kg)

Key insight

Your BMI of 25.8 is in the overweight range (25–29.9). Getting back to BMI 24.9 means losing 2.9 kg (6.5 lbs). Even a 5–10% weight loss significantly reduces metabolic risk.

#ShowYourWork

About BMI

BMI is a simple screening tool, not a diagnostic measure. It does not account for muscle mass, bone density, fat distribution, age, or sex. Athletes and very muscular individuals often score "Overweight" or "Obese" despite being healthy. Always consult a healthcare provider for a complete health assessment.