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Body Mass Index Calculator

Body Mass Index (BMI) is a measure of body fat based on height and weight. The same formula is used for men and women. 

A BMI between 25 and 29.9 is considered overweight.
A BMI between 18.5 and 24.9 is considered normal.
A BMI less than 18.5 is considered underweight.

Note: some people now believe that the Waist to Hip ratio is a better indicator of health than BMI. 

Enter Unit of Measurement:  
 
Enter Height (in bare feet):
inches
Enter Weight (with no clothes):
lbs
Calculated BMI:
Please enter data to calculate value.
Waist Hip Ratio Calculator

Waist-to-Hip Ratio (WHR) is the ratio of the waist to that of the hips. It is calculated by measuring the  circumference of the waist, usually just above the belly button, and dividing by the circumference of the hip at its widest part. The ratio is applied both to women and men.

WHR is shown to be a good predictor of possible cardiovascular problems, such as heart attack, stroke, or other vascular disease, in both men and women. WHR is a better predictor than waist measurement alone and is a a better predictor than the body mass index (BMI).  

For women, a ratio of .80 or less is considered safe (low risk in terms of vascular health). Some studies indicate 0.70 is ideal.  For men it is 0.90 or less.

Enter Unit of Measurement:  
 
Waist:
inches
Hips:
inches
whr
Please enter data to calculate value.
BMR Calculator

Basal Metabolic Rate (BMR) is the energy you expend maintaining normal body functions such as keeping your heart beating, breathing and maintaining your body temperature. These ongoing functions account for 60-70% of the calories you use each day.

So what is the point of knowing your BMR?  It helps you set a realistic and healthy target for weight management. For those wishing to lose weight it not only helps establish an appropriate daily calorie allowance it is a good reality check on whether your goals are realistic for long term weight loss.

Enter Unit of Measurement:  
 
Enter Height (in bare feet):
inches
Enter Weight (with no clothes):
lbs
Age:
Calculated BMR:
Please enter data to calculate value.
Current Activity Level (used for BMR):
Adjusted BMR:
Please enter data to calculate value.
Target Heart Rate

Resting Heart Rate

Before you learn how to calculate and monitor your target training heart rate, you have to know your resting heart rate. Your resting heart rate is the number of times your heart beats per minute while it’s at rest. You can check it in the morning after you’ve had a good night’s sleep and before you get out of bed.

According to the National Institute of Health, the average resting heart rate is 60-100 beats  minute unless you are a well-trained athlete.

Target Training Heart Rate

Your maximum heart rate is 200 * your age.  As you exercise, periodically:

  • Take your pulse on the inside of your wrist, on the thumb side.
  • Use the tips of your first two fingers (not your thumb) to press lightly over the blood vessels on your wrist.
  • Count your pulse for 10 seconds and multiply by 6 to find your beats per minute.

Your heart rate during moderately intense activities is about 50-69% of your maximum heart rate, whereas heart rate during hard physical activity is about 70% to less than 90% of the maximum heart rate. You want to stay between 50 percent to 85 percent of your maximum heart rate.

Age: Your current age.
Fitness Goal: Choose the fitness goal closest to your actual goal.

Beats Per Minute (bpm) Beats in 10 Secs
Target Heart Rate (THR)
Max Heart Rate (MHR)