.pace-calculator-wrapper {
max-width: 800px;
margin: 0 auto;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
color: #333;
line-height: 1.6;
}
.calc-container {
background: #f8f9fa;
padding: 30px;
border-radius: 8px;
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
margin-bottom: 40px;
border: 1px solid #e9ecef;
}
.calc-title {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 24px;
font-weight: 700;
}
.form-group {
margin-bottom: 20px;
}
.form-label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: #495057;
}
.input-row {
display: flex;
gap: 15px;
flex-wrap: wrap;
}
.input-col {
flex: 1;
min-width: 120px;
}
.form-control {
width: 100%;
padding: 10px 12px;
border: 1px solid #ced4da;
border-radius: 4px;
font-size: 16px;
transition: border-color 0.15s ease-in-out;
box-sizing: border-box;
}
.form-control:focus {
border-color: #007bff;
outline: 0;
box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}
.calc-btn {
display: block;
width: 100%;
padding: 12px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 18px;
font-weight: 600;
cursor: pointer;
transition: background-color 0.15s;
margin-top: 20px;
}
.calc-btn:hover {
background-color: #0056b3;
}
.results-box {
margin-top: 25px;
background: #ffffff;
border: 1px solid #dee2e6;
border-radius: 4px;
padding: 20px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
.result-row:last-child {
border-bottom: none;
}
.result-label {
font-weight: 600;
color: #6c757d;
}
.result-value {
font-size: 20px;
font-weight: 700;
color: #28a745;
}
.result-sub {
font-size: 14px;
color: #888;
}
.error-msg {
color: #dc3545;
text-align: center;
margin-top: 10px;
display: none;
}
/* Article Styles */
.content-section h2 {
color: #2c3e50;
margin-top: 30px;
border-bottom: 2px solid #eee;
padding-bottom: 10px;
}
.content-section h3 {
color: #34495e;
margin-top: 25px;
}
.content-section ul {
padding-left: 20px;
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.content-section li {
margin-bottom: 10px;
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.formula-box {
background: #f1f8ff;
padding: 15px;
border-left: 4px solid #007bff;
font-family: monospace;
margin: 20px 0;
}
function calculatePaceRate() {
// Get inputs
var distInput = document.getElementById('paceDist').value;
var unit = document.getElementById('paceUnit').value;
var hrs = document.getElementById('timeHrs').value;
var mins = document.getElementById('timeMins').value;
var secs = document.getElementById('timeSecs').value;
// Parse values (default to 0 if empty)
var dist = parseFloat(distInput);
var h = parseFloat(hrs) || 0;
var m = parseFloat(mins) || 0;
var s = parseFloat(secs) || 0;
// Validation
var errorDiv = document.getElementById('errorMessage');
var resultDiv = document.getElementById('paceResults');
if (isNaN(dist) || dist <= 0) {
errorDiv.style.display = 'block';
resultDiv.style.display = 'none';
return;
}
var totalSeconds = (h * 3600) + (m * 60) + s;
if (totalSeconds <= 0) {
errorDiv.style.display = 'block';
resultDiv.style.display = 'none';
return;
}
errorDiv.style.display = 'none';
resultDiv.style.display = 'block';
// Normalize distance to both Miles and KM
var distMiles = 0;
var distKm = 0;
if (unit === 'miles') {
distMiles = dist;
distKm = dist * 1.60934;
} else if (unit === 'km') {
distKm = dist;
distMiles = dist / 1.60934;
} else if (unit === 'meters') {
distKm = dist / 1000;
distMiles = distKm / 1.60934;
}
// Calculate Pace (Seconds per Unit)
var secondsPerMile = totalSeconds / distMiles;
var secondsPerKm = totalSeconds / distKm;
// Calculate Speed (Units per Hour)
var totalHours = totalSeconds / 3600;
var speedMph = distMiles / totalHours;
var speedKph = distKm / totalHours;
// Update DOM
document.getElementById('resMilePace').innerText = formatTime(secondsPerMile) + " /mi";
document.getElementById('resKmPace').innerText = formatTime(secondsPerKm) + " /km";
document.getElementById('resMph').innerText = speedMph.toFixed(2);
document.getElementById('resKph').innerText = speedKph.toFixed(2);
}
function formatTime(totalSeconds) {
var hrs = Math.floor(totalSeconds / 3600);
var remainingSecs = totalSeconds % 3600;
var mins = Math.floor(remainingSecs / 60);
var secs = Math.round(remainingSecs % 60);
// Handle rounding edge case (e.g., 59.99s rounding to 60s)
if (secs === 60) {
mins++;
secs = 0;
}
if (mins === 60) {
hrs++;
mins = 0;
}
var output = "";
// Format Minutes
var minStr = mins < 10 ? "0" + mins : mins;
// Format Seconds
var secStr = secs 0) {
output = hrs + ":" + minStr + ":" + secStr;
} else {
output = mins + ":" + secStr;
}
return output;
}
How to Calculate Pace Rate: The Ultimate Guide
Whether you are training for your first 5K, a marathon, or simply tracking your daily runs, understanding how to calculate your pace rate is essential. In the world of athletics, "pace" refers to the amount of time it takes to cover a specific distance, typically expressed as minutes per mile or minutes per kilometer. Unlike speed (which measures distance over time, like MPH), pace focuses on time over distance, helping runners maintain a steady rhythm.
The Basic Pace Formula
The mathematics behind calculating pace is straightforward, yet getting the format right (converting decimal minutes to seconds) can be tricky. The core formula is:
Pace = Time ÷ Distance
For example, if you run 3 miles in 30 minutes:
- Time: 30 minutes
- Distance: 3 miles
- Calculation: 30 ÷ 3 = 10
- Result: 10:00 minutes per mile
Handling "Partial" Minutes
The calculation becomes more complex when the result isn't a whole number. If you run 5 kilometers in 28 minutes, the math looks like this:
28 minutes ÷ 5 km = 5.6 minutes per km.
However, running watches don't display "5.6". You must convert the decimal (.6) into seconds:
0.6 minutes × 60 seconds = 36 seconds
So, your actual pace is 5:36 per kilometer.
Why Monitoring Pace Rate Matters
Calculating your pace rate serves several critical functions in training:
- Energy Management: Starting a race too fast is a common error. Knowing your target pace helps you conserve glycogen stores for the finish.
- Training Zones: Specific physiological adaptations occur at different paces (e.g., lactate threshold vs. aerobic base building).
- Progress Tracking: Watching your pace decrease (get faster) over time while maintaining the same heart rate is a clear indicator of improved fitness.
Common Pace Conversions
Runners often need to convert between Metric (min/km) and Imperial (min/mile) paces. The conversion factor is roughly 1.609.
- 5:00 min/km is approximately 8:03 min/mile.
- 4:00 min/km is approximately 6:26 min/mile.
- 3:07 min/km is a sub-3 hour marathon pace (approx 5:00 min/mile).
Using the Pace Calculator
The tool above simplifies these calculations. Simply input your distance (selecting miles, kilometers, or meters) and your total time. The calculator will automatically perform the conversions and provide your pace in both imperial and metric units, as well as your average speed in MPH and KPH.