.calculator-container {
font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
background: #fff;
padding: 20px;
}
.calc-box {
background-color: #f8f9fa;
border: 1px solid #e9ecef;
border-radius: 8px;
padding: 25px;
margin-bottom: 30px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.calc-title {
text-align: center;
color: #d63346; /* Heart red color */
margin-bottom: 25px;
font-size: 24px;
font-weight: 700;
}
.input-group {
margin-bottom: 20px;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: #333;
}
.input-group input, .input-group select {
width: 100%;
padding: 12px;
border: 1px solid #ced4da;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box; /* Ensure padding doesn't affect width */
}
.input-group input:focus, .input-group select:focus {
border-color: #d63346;
outline: none;
}
.calc-btn {
width: 100%;
padding: 14px;
background-color: #d63346;
color: white;
border: none;
border-radius: 4px;
font-size: 18px;
font-weight: 600;
cursor: pointer;
transition: background 0.3s;
}
.calc-btn:hover {
background-color: #b02a3a;
}
#result-area {
margin-top: 25px;
padding: 20px;
border-radius: 6px;
display: none;
text-align: center;
}
.bpm-display {
font-size: 42px;
font-weight: 800;
color: #2c3e50;
margin: 10px 0;
}
.bpm-unit {
font-size: 16px;
color: #666;
font-weight: normal;
}
.health-note {
font-size: 16px;
margin-top: 10px;
padding-top: 10px;
border-top: 1px solid #ddd;
}
.content-section h2 {
color: #2c3e50;
border-bottom: 2px solid #eee;
padding-bottom: 10px;
margin-top: 30px;
}
.content-section p, .content-section ul {
line-height: 1.6;
color: #444;
}
.content-section li {
margin-bottom: 10px;
}
.measurement-guide {
background: #eef7fe;
padding: 15px;
border-left: 4px solid #3498db;
margin: 20px 0;
}
function calculateBPM() {
// Get inputs
var beatsInput = document.getElementById('beatsCounted');
var durationInput = document.getElementById('countDuration');
var resultArea = document.getElementById('result-area');
var bpmDisplay = document.getElementById('bpmValue');
var categoryDisplay = document.getElementById('bpmCategory');
var beats = parseFloat(beatsInput.value);
var duration = parseInt(durationInput.value);
// Validation
if (isNaN(beats) || beats < 0) {
alert("Please enter a valid number of beats.");
resultArea.style.display = "none";
return;
}
// Calculation Logic: BPM = (Beats / Duration) * 60
// Since duration is the denominator in seconds, the multiplier is 60/duration
var multiplier = 60 / duration;
var bpm = Math.round(beats * multiplier);
// Determine Category (Based on general resting heart rate for adults)
var category = "";
var color = "";
if (bpm < 60) {
category = "Bradycardia (Slow): This is below the average resting range (60-100 BPM). Note: Athletes often have lower resting heart rates.";
resultArea.style.backgroundColor = "#fff3cd"; // Yellowish
resultArea.style.border = "1px solid #ffeeba";
} else if (bpm >= 60 && bpm <= 100) {
category = "Normal Resting Range: Your heart rate falls within the standard average for adults.";
resultArea.style.backgroundColor = "#d4edda"; // Greenish
resultArea.style.border = "1px solid #c3e6cb";
} else {
category = "Tachycardia (Fast): This is above the average resting range. If you just exercised, this is normal. If at rest, it may be high.";
resultArea.style.backgroundColor = "#f8d7da"; // Reddish
resultArea.style.border = "1px solid #f5c6cb";
}
// Output
bpmDisplay.innerHTML = bpm + ' BPM';
categoryDisplay.innerHTML = category;
resultArea.style.display = "block";
}
Pulse to BPM Calculator
10 Seconds (Multiply by 6)
15 Seconds (Multiply by 4)
20 Seconds (Multiply by 3)
30 Seconds (Multiply by 2)
60 Seconds (Full Minute)
Your Estimated Heart Rate:
0 BPM
How to Convert Pulse Rate to Heart Rate
Your heart rate, measured in Beats Per Minute (BPM), is a vital indicator of your cardiovascular health. While clinical machines measure this automatically, you can easily calculate it manually by feeling your pulse. This calculator automates the math based on how long you counted your beats.
Step-by-Step Measurement Guide:
- Find your pulse: Place your index and middle fingers on your wrist (radial artery) below the thumb, or on the side of your neck (carotid artery).
- Set a timer: Use a watch or phone to time yourself. The most common durations are 10, 15, or 30 seconds.
- Count the beats: Count every thump you feel within that time frame. Start counting from zero at the very start of the timer.
- Enter the data: Input the duration and the count into the calculator above to get your BPM instantly.
Understanding the Formula
The mathematics behind converting a pulse count to a heart rate is simple extrapolation. Since heart rate is defined as beats per minute (60 seconds), you simply multiply your count to fill a minute.
- 10-Second Count: Multiply beats by 6. (e.g., 12 beats x 6 = 72 BPM)
- 15-Second Count: Multiply beats by 4. (e.g., 18 beats x 4 = 72 BPM)
- 30-Second Count: Multiply beats by 2. (e.g., 36 beats x 2 = 72 BPM)
The 15-second count is often preferred by nurses and fitness professionals because it is short enough to be convenient but long enough to average out minor rhythm irregularities.
What is a Normal Heart Rate?
For most adults (18+), a normal resting heart rate typically ranges between 60 and 100 BPM. However, many factors influence this number:
- Fitness Level: Elite athletes may have resting heart rates as low as 40 BPM.
- Age: Children generally have higher heart rates than adults.
- Activity: Measuring immediately after exercise will result in a much higher BPM.
- Emotions: Stress, anxiety, or excitement can temporarily spike your pulse.
- Medication: Beta-blockers may lower HR, while thyroid medications might raise it.
When to Consult a Doctor
While this calculator provides a quick check, consistent irregularities should be addressed by a medical professional. If your resting heart rate is consistently above 100 BPM (Tachycardia) or below 60 BPM (Bradycardia) accompanied by dizziness, shortness of breath, or fainting, please seek medical advice.