Understand Your Weight Better
Calculate, compare, convert, and explore your body metrics. Built with verified clinical standards from the WHO, CDC, and peer-reviewed metabolic literature.
Quick Weight Analysis
Instant evaluation of BMI, healthy range boundaries, and imperial/metric equivalents.
Healthy Weight
125 – 168 lbs
11 st 0.3 lb
Within 18.5 – 24.9 BMI
Explore Weight Intelligence Tools
Each tool provides transparent formulas, clinical reference ranges, and contextual health guidance.
BMI Calculator
Calculate your Body Mass Index with WHO adult ranges and CDC pediatric percentiles.
Ideal Weight Calculator
Compare healthy weight targets across Devine, Robinson, Miller, Hamwi, and WHO formulas.
Healthy Weight Calculator
Find your medically recognized healthy weight boundary based on adult height.
Food Calorie Counter
Search verified calories and macros across Indian, Arab, American, British, Spanish, Mexican dishes, biscuits, and milk.
Calorie Calculator
Estimate your maintenance and weight goal caloric intake using Mifflin-St Jeor.
BMR Calculator
Calculate your Basal Metabolic Rate — the calories burned at complete rest.
TDEE Calculator
Discover your Total Daily Energy Expenditure factoring in lifestyle and workout activity.
Body Fat Calculator
Estimate body fat percentage and lean tissue mass using the U.S. Navy circumference method.
Weight Difference Calculator
Compute precise absolute, percentage, and caloric differences between two weights.
Compare Weights, Heights & BMIs
Understand how weight distributes across different heights and body frames without arbitrary assumptions.
Dual profile evaluation of height, weight, BMI, and percentage differences.
In-depth analysis of what a 10 kg difference represents across various heights.
Visualize relative physical proportions and body distribution ratios.
Complete adult category thresholds from severe underweight to Class 3 obesity.
Adult Height to Healthy Weight Matrix
Reference boundaries corresponding to WHO adult Body Mass Index classifications.
| Height | Underweight (<18.5) | Healthy Range (18.5–24.9) | Overweight (25–29.9) | Obesity (30.0+) |
|---|---|---|---|---|
| 146 cm(4'10") | < 39.4 kg | 39.4 kg – 53.1 kg | 53.1 kg – 63.7 kg | > 63.9 kg |
| 148 cm(4'10") | < 40.5 kg | 40.5 kg – 54.5 kg | 54.5 kg – 65.5 kg | > 65.7 kg |
| 150 cm(4'11") | < 41.6 kg | 41.6 kg – 56 kg | 56 kg – 67.3 kg | > 67.5 kg |
| 152 cm(4'12") | < 42.7 kg | 42.7 kg – 57.5 kg | 57.5 kg – 69.1 kg | > 69.3 kg |
| 154 cm(5'1") | < 43.9 kg | 43.9 kg – 59.1 kg | 59.1 kg – 70.9 kg | > 71.1 kg |
| 156 cm(5'1") | < 45 kg | 45 kg – 60.6 kg | 60.6 kg – 72.8 kg | > 73 kg |
| 158 cm(5'2") | < 46.2 kg | 46.2 kg – 62.2 kg | 62.2 kg – 74.6 kg | > 74.9 kg |
| 160 cm(5'3") | < 47.3 kg | 47.4 kg – 63.7 kg | 63.7 kg – 76.5 kg | > 76.8 kg |
| 162 cm(5'4") | < 48.5 kg | 48.6 kg – 65.3 kg | 65.3 kg – 78.5 kg | > 78.7 kg |
| 164 cm(5'5") | < 49.7 kg | 49.8 kg – 67 kg | 67 kg – 80.4 kg | > 80.7 kg |
| 166 cm(5'5") | < 51 kg | 51 kg – 68.6 kg | 68.6 kg – 82.4 kg | > 82.7 kg |
| 168 cm(5'6") | < 52.2 kg | 52.2 kg – 70.3 kg | 70.3 kg – 84.4 kg | > 84.7 kg |
| 170 cm(5'7") | < 53.4 kg | 53.5 kg – 72 kg | 72 kg – 86.4 kg | > 86.7 kg |
| 172 cm(5'8") | < 54.7 kg | 54.7 kg – 73.7 kg | 73.7 kg – 88.5 kg | > 88.8 kg |
| 174 cm(5'9") | < 56 kg | 56 kg – 75.4 kg | 75.4 kg – 90.5 kg | > 90.8 kg |
| 176 cm(5'9") | < 57.3 kg | 57.3 kg – 77.1 kg | 77.1 kg – 92.6 kg | > 92.9 kg |
| 178 cm(5'10") | < 58.6 kg | 58.6 kg – 78.9 kg | 78.9 kg – 94.7 kg | > 95.1 kg |
| 180 cm(5'11") | < 59.9 kg | 59.9 kg – 80.7 kg | 80.7 kg – 96.9 kg | > 97.2 kg |
| 182 cm(5'12") | < 61.2 kg | 61.3 kg – 82.5 kg | 82.5 kg – 99 kg | > 99.4 kg |
| 184 cm(6'0") | < 62.6 kg | 62.6 kg – 84.3 kg | 84.3 kg – 101.2 kg | > 101.6 kg |
| 186 cm(6'1") | < 64 kg | 64 kg – 86.1 kg | 86.1 kg – 103.4 kg | > 103.8 kg |
| 188 cm(6'2") | < 65.4 kg | 65.4 kg – 88 kg | 88 kg – 105.7 kg | > 106 kg |
| 190 cm(6'3") | < 66.7 kg | 66.8 kg – 89.9 kg | 89.9 kg – 107.9 kg | > 108.3 kg |
| 192 cm(6'4") | < 68.2 kg | 68.2 kg – 91.8 kg | 91.8 kg – 110.2 kg | > 110.6 kg |
| 194 cm(6'4") | < 69.6 kg | 69.6 kg – 93.7 kg | 93.7 kg – 112.5 kg | > 112.9 kg |
| 196 cm(6'5") | < 71 kg | 71.1 kg – 95.7 kg | 95.7 kg – 114.9 kg | > 115.2 kg |
| 198 cm(6'6") | < 72.5 kg | 72.5 kg – 97.6 kg | 97.6 kg – 117.2 kg | > 117.6 kg |
| 200 cm(6'7") | < 74 kg | 74 kg – 99.6 kg | 99.6 kg – 119.6 kg | > 120 kg |
| 202 cm(6'8") | < 75.4 kg | 75.5 kg – 101.6 kg | 101.6 kg – 122 kg | > 122.4 kg |
| 204 cm(6'8") | < 76.9 kg | 77 kg – 103.6 kg | 103.6 kg – 124.4 kg | > 124.8 kg |
| 206 cm(6'9") | < 78.5 kg | 78.5 kg – 105.7 kg | 105.7 kg – 126.9 kg | > 127.3 kg |
Weight Science & Physiology
Rigorous, medically grounded explanations without marketing buzzwords or fads.
How Weight Loss Really Works
Thermodynamics, energy balance, adipose lipid mobilization, and how metabolic adaptation alters pacing.
How BMI is Calculated
The Quetelet mathematical equation, historical population benchmarks, and clinical limitations.
Water Weight vs Fat Loss
Why glycogen stores bind 3–4 grams of water and why the scale fluctuates daily by 1–2 kg.
Understanding Weight & Body Metrics
What is considered a healthy BMI for adults?▼
According to the World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC), standard adult healthy weight falls between a Body Mass Index (BMI) of 18.5 and 24.9 kg/m². Values below 18.5 are classified as underweight, 25.0 to 29.9 as overweight, and 30.0 or higher as obesity. However, BMI is a screening metric and does not directly assess body composition or lean muscle mass.
Why does the scale fluctuate by 1 to 2 kg (2 to 4 lbs) daily?▼
Daily weight fluctuations are almost entirely driven by fluid dynamics and digestive transit rather than rapid fat gain or loss. Consuming dietary carbohydrates increases muscular and liver glycogen storage (each gram of glycogen binds approximately 3 to 4 grams of water). Sodium intake, hydration, hormonal shifts, and unevacuated food also produce natural daily shifts.
How is ideal body weight calculated?▼
There is no single universally applicable ideal weight. Clinical medicine references formulas like Devine (1974), Robinson (1983), and Miller (1983), which were originally developed for medication dosing based on height over 5 feet. Modern health authorities recommend targeting the WHO healthy BMI range (18.5 to 24.9 kg/m²) corresponding to your adult height.
Does BMI apply to children and teenagers?▼
No, adult fixed BMI cutoff points (such as 25 for overweight) must NOT be applied to children and teens aged 2 to 19. Because youth body composition changes significantly during growth spurts, pediatric assessments use CDC BMI-for-age percentiles, comparing a child's BMI to other children of the exact same age and biological sex.
What is a safe and realistic rate of weight loss?▼
Clinical guidelines from the CDC and National Institutes of Health (NIH) recommend a gradual rate of 0.5 to 1.0 kg (1 to 2 lbs) per week, achieved through a moderate daily caloric deficit of 500 to 750 kcal. More aggressive deficits risk muscle loss, micronutrient deficiencies, and compensatory metabolic adaptation.
Grounded in Authoritative Medical Sources
All calculations, energy equations, and reference ranges are verified against standards from the WHO, CDC, National Institutes of Health, and peer-reviewed journals.