1. What is ECG Heart Rate Calculation?

The ECG heart rate calculation estimates the heart rate by measuring the distance between consecutive R waves on an electrocardiogram (ECG). This method provides an accurate measurement of heart rate based on the electrical activity of the heart.

2. How Does the Calculator Work?

The calculator uses the standard ECG heart rate formula:

Where:

• 1500 — Constant representing the number of small squares in one minute (25 mm/s paper speed)
• Number of small squares — Distance between consecutive R waves on ECG paper

Explanation: Standard ECG paper speed is 25 mm/s, with each small square representing 0.04 seconds. The formula calculates beats per minute based on the interval between heartbeats.

3. Importance of Heart Rate Measurement

Details: Accurate heart rate measurement is essential for diagnosing arrhythmias, assessing cardiovascular health, and monitoring patients during procedures or treatment.

4. Using the Calculator

Tips: Count the number of small squares between the peaks of two consecutive R waves on an ECG tracing and enter this value. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use 1500 in the formula?
A: 1500 represents the number of small squares in one minute at standard ECG paper speed (25 mm/s × 60 seconds × 1 small square/0.1 cm).

Q2: What if my ECG uses a different paper speed?
A: For 50 mm/s paper speed, use 3000 instead of 1500 in the formula.

Q3: What is a normal heart rate range?
A: Normal resting heart rate is typically 60-100 beats/min in adults, though athletes may have lower rates.

Q4: How accurate is this method?
A: Very accurate for regular rhythms. For irregular rhythms, average several R-R intervals.

Q5: What if the rhythm is irregular?
A: With irregular rhythms, measure several R-R intervals and calculate an average heart rate.