BMI = weight in kg ÷ (height in metres)2. A BMI between 18.5 and 24.9 is considered a healthy range for most adults. BMI Calculator also finds BMR (Basal Metabolic Rate) using the Mifflin-St Jeor formula and estimates daily calories to maintain your weight.
A healthy weight for 170 cm height at a BMI of 24.9 is up to about 72 kg; someone 170 cm and 70 kg has a BMI of 24.2 (normal range).
For 5 ft 7 in (170.2 cm) and 65 kg, BMI = 22.4 (normal range).
BMR (Mifflin-St Jeor) for a 30-year-old man, 170 cm, 70 kg: BMR = 10 × 70 + 6.25 × 170 − 5 × 30 + 5 = 1,618 kcal/day. At a lightly active level (×1.375), daily calories to maintain weight are about 2,224 kcal.
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BMI = weight in kilograms ÷ (height in metres)^2. For example, 70 kg at 1.70 m gives a BMI of 24.2.
A BMI between 18.5 and 24.9 is generally considered healthy for adults; below 18.5 is underweight, 25–29.9 is overweight, and 30+ is obese.
For 170 cm, a BMI of 18.5–24.9 corresponds to roughly 53–72 kg.
5 ft 7 in is about 1.70 m; 65 kg at that height gives a BMI of 22.4, in the normal range.
BMR (Basal Metabolic Rate) is the calories your body burns at rest. The Mifflin-St Jeor formula for men is 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5; for women, subtract 161 instead of adding 5.
Multiply your BMR by an activity factor (about 1.2 sedentary to 1.9 very active). A lightly active 30-year-old man with a BMR of 1,618 needs roughly 2,224 kcal/day to maintain weight.
The standard BMI ranges were developed on Western populations. India's health guidelines use lower cut-offs: overweight from a BMI of 23 and obese from 25, since Indians tend to have higher body fat at the same BMI.
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