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Health Calculators

Discovery Health Calculators
Including: Activity Calorie Burn Rate, Basal Metabolic Rate, Beats and Breaths, Blood Alcohol Content, Body Mass Index, Cost of Smoking, Pregnancy Due Date, Target Heart Rate
http://health.discovery.com/tools/calculators.html

BMI Calculator

Is your Body Mass Index where it should be?

System:
Weight: lb
Height: in
 
Body mass index (BMI) is a measure of body fat based on height and weight that applies to both adult men and women.

BMI is a reliable indicator of total body fat, which is related to the risk of disease and death. The score is valid for both men and women but it does have some limits. The limits are:
  • It may overestimate body fat in athletes and others who have a muscular build.
  • It may underestimate body fat in older persons and others who have lost muscle mass.
BMI Categories:
  • Underweight =< 18.5
  • Normal weight = 18.5-24.9
  • Overweight = 25-29.9
  • Obesity = BMI of 30 or greater

Calorie Calculator

How many calories do you need?

System:
Gender:
Weight: lb
Height: in
Age: yr
 
The Calorie Needs Calculator currently uses the formula proposed by MD Mifflin and St Jeor.

Why This Formula?
As recent as 2005, the ADA (American Dietetic Association) published a comparison of various equations. The Mifflin-St Jeor was found to be the most accurate.