What is the heart rate using the 1500 method is?

The 1500 method is a way to calculate heart rate by counting the number of small squares on an ECG strip between two R waves. To use this method, you count the number of small squares between the R waves and divide 1500 by that number. For example, if there are 30 small squares between two R waves, the heart rate would be 1500 ÷ 30 = 50 beats per minute. This method is most accurate for regular rhythms.