6 Seconds (Multiply by 10)
10 Seconds (Multiply by 6)
15 Seconds (Multiply by 4)
30 Seconds (Multiply by 2)
60 Seconds (Full Minute)
Your Heart Rate: BPM
Status:
Estimated Max Heart Rate: BPM
Target Zone (Fat Burn): BPM
How to Calculate Heart Rate Pulse Manually
Calculating your heart rate, also known as your pulse, is a vital skill for monitoring cardiovascular health and exercise intensity. Your pulse represents the number of times your heart beats per minute (BPM).
Step-by-Step Guide:
Find your pulse: Use the tips of your index and middle fingers. The easiest spots are the radial pulse (wrist) and the carotid pulse (neck).
Radial Pulse: Place fingers on the thumb side of your wrist, just below the base of the hand.
Carotid Pulse: Place fingers on the side of your windpipe, just under the jawline.
Start counting: Using a watch or timer, count the number of beats you feel for a set duration (usually 15, 30, or 60 seconds).
Apply the formula: If you counted for 15 seconds, multiply the number by 4. If you counted for 30 seconds, multiply by 2.
The Mathematical Formula
The standard formula used by this calculator is:
BPM = (Number of Beats / Seconds Observed) × 60
Normal Heart Rate Ranges
Category
Resting Heart Rate (BPM)
Athletes
40 – 60 BPM
Healthy Adults
60 – 100 BPM
Sedentary / Elevated
Above 100 BPM (Tachycardia)
Target Heart Rate Zones by Age
To maximize workout efficiency, you should aim for a specific percentage of your maximum heart rate. Max HR is generally calculated as 220 minus your age.
Moderate Intensity: 50% to 70% of Max HR.
Vigorous Intensity: 70% to 85% of Max HR.
Real-World Example
If you are 40 years old and you count 18 beats in 15 seconds:
BPM Calculation: 18 beats × 4 = 72 BPM.
Max HR: 220 – 40 = 180 BPM.
Target Zone (60%): 180 × 0.60 = 108 BPM.
In this example, a resting pulse of 72 BPM is considered well within the normal healthy range for an adult.
function calculatePulse() {
var beats = parseFloat(document.getElementById("beatsCount").value);
var seconds = parseFloat(document.getElementById("secondsCount").value);
var age = parseFloat(document.getElementById("userAge").value);
var resultDiv = document.getElementById("pulseResult");
var bpmOutput = document.getElementById("bpmOutput");
var statusOutput = document.getElementById("statusOutput");
var maxHROutput = document.getElementById("maxHROutput");
var targetZoneOutput = document.getElementById("targetZoneOutput");
if (isNaN(beats) || beats <= 0) {
alert("Please enter a valid number of beats.");
return;
}
// Calculate BPM
var bpm = (beats / seconds) * 60;
bpm = Math.round(bpm);
// Determine Status
var status = "";
if (bpm < 60) {
status = "Low (Bradycardia or Athletic)";
} else if (bpm 0) {
var maxHR = 220 – age;
var targetLow = Math.round(maxHR * 0.50);
var targetHigh = Math.round(maxHR * 0.70);
maxHROutput.innerHTML = maxHR;
targetZoneOutput.innerHTML = targetLow + " – " + targetHigh;
} else {
maxHROutput.innerHTML = "Enter age for data";
targetZoneOutput.innerHTML = "Enter age for data";
}
resultDiv.style.display = "block";
resultDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}