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This calculator will calculate your basal metabolic rate (BMR) and your body mass index (BMI).
Basal metabolic rate is the amount of daily energy expended by humans and other animals at rest. Rest is defined as existing in a neutrally temperate environment while in the post-absorptive state. [wikipedia]
This calculator uses two methods: Mifflin-St Jeor & Harris-Benedict. The Mifflin-St Jeor is more accurate than the Harris-Benedict formula. Neither formula should be used for teenagers.
The green number at the top of each table is your BMR. The numbers within each table correspond to your activity level.
Your BMI indicates your body composition. The formula is a fairly reliable indicator of body fatness in groups. Some groups, such as athletes, will find that this number is actually much higher than their actual body fat percentage. This is because the formula used cannot differentiate between muscle mass and fat.
This calculator will calculate your maximum heart rate and target heart rate.
This is only an estimate. Variances of 15-20 beats per minute (BPM) are possible. A more accurate rate can be obtained by your doctor.
This calculator will calculate your one rep maximum (1RM) using multiple formulas.
All of the formulas used below will only predict your one rep maximum. They cannot be 100% accurate due to physiological differences in people. This is especially true with higher rep ranges.