Weight
Calculator
Find your healthy weight range by height, convert between kg, lbs, and stone, plan weight loss or gain, and calculate your BMI weight goal.
Healthy Weight Ranges by Height
BMI 18.5–24.9 range. Values shown in lbs and kg.
| Height | Healthy Range (lbs) | Healthy Range (kg) | Midpoint |
|---|---|---|---|
| 4'10" / 147 cm | 91 – 119 lbs | 41.3 – 54.0 kg | 105 lbs / 47.6 kg |
| 5'0" / 152 cm | 97 – 128 lbs | 44.0 – 58.1 kg | 112 lbs / 50.8 kg |
| 5'2" / 157 cm | 104 – 136 lbs | 47.2 – 61.7 kg | 120 lbs / 54.4 kg |
| 5'4" / 163 cm | 110 – 145 lbs | 49.9 – 65.8 kg | 128 lbs / 58.1 kg |
| 5'6" / 168 cm | 118 – 155 lbs | 53.5 – 70.3 kg | 136 lbs / 61.7 kg |
| 5'8" / 173 cm | 125 – 164 lbs | 56.7 – 74.4 kg | 144 lbs / 65.3 kg |
| 5'10" / 178 cm | 132 – 174 lbs | 59.9 – 78.9 kg | 153 lbs / 69.4 kg |
| 6'0" / 183 cm | 140 – 184 lbs | 63.5 – 83.5 kg | 162 lbs / 73.5 kg |
| 6'2" / 188 cm | 148 – 194 lbs | 67.1 – 88.0 kg | 171 lbs / 77.6 kg |
| 6'4" / 193 cm | 156 – 205 lbs | 70.8 – 93.0 kg | 180 lbs / 81.6 kg |
BMI Has Limitations — Muscle Weighs More Than Fat
A muscular athlete can have a BMI of 27 (technically "overweight") with very low body fat. A sedentary person may have a "normal" BMI but high body fat percentage. BMI is a population screening tool, not a personal diagnosis. Waist circumference, body fat %, and metabolic markers give a more complete picture.
1 pound of body fat ≈ 3,500 calories. To lose 1 lb/week, create a 500 cal/day deficit. To lose 2 lbs/week, a 1,000 cal/day deficit — generally the maximum recommended for sustainable loss.
Never go below 1,200 cal/day (women) or 1,500 cal/day (men) without medical supervision. Very low calorie diets cause muscle loss, nutrient deficiencies, and metabolic adaptation (slowing metabolism).
Exercise burns calories and builds muscle but contributes modestly to weight loss alone — a 30-min run burns ~300 calories, roughly one small meal's worth. The real benefit is the combination: caloric deficit through diet + exercise to maintain muscle mass and metabolic rate.
Resistance training is especially important during weight loss — it preserves lean muscle mass, which burns more calories at rest than fat tissue and prevents the metabolism slowdown that occurs with diet-only weight loss.
How to Calculate Healthy Weight by Height
Healthy weight is most commonly defined using BMI (Body Mass Index), though several clinical formulas also exist. Each has different strengths depending on what you're using the information for.
BMI Method (Most Common)
Ideal Body Weight Formulas
Weight Loss Calorie Formula
Weight Units — Pounds, Kilograms & Stone
Weight is measured in different units around the world, which can cause confusion when comparing body weight across countries or reading medical information from different regions.
Kilograms (kg) — International Standard
The kilogram is the SI unit of mass and the standard in medical and scientific contexts worldwide. Most countries use kg for body weight on scales, in medical records, and for drug dosing. 1 kg = 2.20462 lbs = 0.157473 stone.
Pounds (lbs) — United States
Pounds are the primary unit for body weight in the United States. A pound equals 0.453592 kg. Body weight in the US is typically expressed in whole pounds (e.g., 165 lbs). Medically, drug dosing in the US often requires converting lbs to kg first: kg = lbs × 0.453592.
Stone (st) — United Kingdom & Ireland
Stone is used predominantly in the UK and Ireland for body weight. 1 stone = 14 pounds = 6.35029 kg. Weight is commonly expressed as "X stone Y pounds" — for example, "11 stone 4 pounds" means 158 lbs / 71.7 kg. To convert kg to stone: divide by 6.35029; remainder × 14 for remaining pounds.