Enter the current heart rate (BPM) and the max heart rate (BPM) into the Percent Heart Rate Calculator. The calculator will evaluate the Percent Heart Rate.

## Percent Heart Rate Formula

The following two example problems outline the steps and information needed to calculate the Percent Heart Rate.

PHR = CHR / MHR * 100
• Where PHR is the Percent Heart Rate (%)
• CHR is the current heart rate (BPM)
• MHR is the max heart rate (BPM)

To calculate the percent heart rate, divide the current heart rate by the max heart rate, then multiply by 100.

## How to Calculate Percent Heart Rate?

The following example problems outline how to calculate Percent Heart Rate.

Example Problem #1:

1. First, determine the current heart rate (BPM).
• The current heart rate (BPM) is given as: 150.
2. Next, determine the max heart rate (BPM).
• The max heart rate (BPM) is provided as: 200.
3. Finally, calculate the Percent Heart Rate using the equation above:

PHR = CHR / MHR * 100

The values provided above are inserted into the equation below and computed.

PHR = 150 / 200 * 100 = 75.00 (%)

Example Problem #2:

For this problem, the variables required are provided below:

current heart rate (BPM) = 190

max heart rate (BPM) = 210

Test your knowledge using the equation and check your answer with the calculator..

PHR = CHR / MHR * 100 = ?