.clock-card-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
background-color: #ffffff;
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
color: #333;
}
.clock-card-calculator-container h1, .clock-card-calculator-container h2 {
color: #004a99;
text-align: center;
margin-bottom: 20px;
}
.calculator-section {
background-color: #f8f9fa;
padding: 20px;
border-radius: 5px;
margin-bottom: 20px;
border: 1px solid #dee2e6;
}
.input-group {
margin-bottom: 15px;
display: flex;
align-items: center;
flex-wrap: wrap;
}
.input-group label {
flex: 1 1 150px;
margin-right: 10px;
font-weight: 600;
color: #555;
}
.input-group input[type="number"],
.input-group input[type="time"],
.input-group select {
flex: 1 1 200px;
padding: 10px 12px;
border: 1px solid #ced4da;
border-radius: 4px;
font-size: 1rem;
box-sizing: border-box; /* Include padding and border in the element's total width and height */
}
.input-group input[type="number"]:focus,
.input-group input[type="time"]:focus,
.input-group select:focus {
border-color: #004a99;
outline: none;
box-shadow: 0 0 0 3px rgba(0, 74, 153, 0.25);
}
.button-group {
text-align: center;
margin-top: 20px;
}
button {
background-color: #004a99;
color: white;
border: none;
padding: 12px 25px;
border-radius: 5px;
font-size: 1.1rem;
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #003366;
}
#calculationResult {
margin-top: 25px;
padding: 20px;
background-color: #e7f3ff;
border-left: 5px solid #004a99;
border-radius: 5px;
text-align: center;
font-size: 1.4rem;
font-weight: bold;
color: #004a99;
}
#calculationResult span {
font-size: 1.1rem;
font-weight: normal;
display: block;
margin-top: 5px;
color: #555;
}
.article-content {
margin-top: 30px;
padding-top: 20px;
border-top: 1px solid #eee;
}
.article-content h2 {
text-align: left;
margin-bottom: 15px;
}
.article-content p, .article-content ul, .article-content li {
line-height: 1.7;
margin-bottom: 15px;
}
.article-content li {
margin-left: 20px;
}
@media (max-width: 600px) {
.input-group {
flex-direction: column;
align-items: stretch;
}
.input-group label {
margin-bottom: 5px;
flex-basis: auto;
}
.input-group input[type="number"],
.input-group input[type="time"],
.input-group select {
width: 100%;
flex-basis: auto;
}
button {
width: 100%;
padding: 15px;
}
.clock-card-calculator-container {
padding: 15px;
}
}
function calculateWorkHours() {
var startTimeInput = document.getElementById("startTime").value;
var endTimeInput = document.getElementById("endTime").value;
var breakDurationMinutesInput = document.getElementById("breakDurationMinutes").value;
var resultDiv = document.getElementById("calculationResult");
resultDiv.innerHTML = 'Total Work Hours: 00:00'; // Reset previous results
if (!startTimeInput || !endTimeInput || !breakDurationMinutesInput) {
resultDiv.innerHTML = 'Error: All fields are required.Please fill in start time, end time, and break duration.';
resultDiv.style.color = '#dc3545'; // Red for error
resultDiv.style.backgroundColor = '#f8d7da';
resultDiv.style.borderColor = '#f5c6cb';
return;
}
var breakDurationMinutes = parseInt(breakDurationMinutesInput, 10);
if (isNaN(breakDurationMinutes) || breakDurationMinutes < 0) {
resultDiv.innerHTML = 'Error: Invalid break duration.Please enter a non-negative number for break duration.';
resultDiv.style.color = '#dc3545'; // Red for error
resultDiv.style.backgroundColor = '#f8d7da';
resultDiv.style.borderColor = '#f5c6cb';
return;
}
var startTimeParts = startTimeInput.split(':');
var endTimeParts = endTimeInput.split(':');
var startHour = parseInt(startTimeParts[0], 10);
var startMinute = parseInt(startTimeParts[1], 10);
var endHour = parseInt(endTimeParts[0], 10);
var endMinute = parseInt(endTimeParts[1], 10);
var startTimeInMinutes = (startHour * 60) + startMinute;
var endTimeInMinutes = (endHour * 60) + endMinute;
// Handle cases where end time is on the next day (e.g., overnight shifts)
if (endTimeInMinutes < startTimeInMinutes) {
endTimeInMinutes += 24 * 60; // Add 24 hours in minutes
}
var grossDurationInMinutes = endTimeInMinutes – startTimeInMinutes;
if (grossDurationInMinutes < 0) {
resultDiv.innerHTML = 'Error: End time cannot be before start time.Ensure times are entered correctly.';
resultDiv.style.color = '#dc3545'; // Red for error
resultDiv.style.backgroundColor = '#f8d7da';
resultDiv.style.borderColor = '#f5c6cb';
return;
}
var netDurationInMinutes = grossDurationInMinutes – breakDurationMinutes;
if (netDurationInMinutes < 0) {
netDurationInMinutes = 0; // Cannot have negative work hours
}
var totalHours = Math.floor(netDurationInMinutes / 60);
var remainingMinutes = netDurationInMinutes % 60;
var formattedHours = totalHours.toString().padStart(2, '0');
var formattedMinutes = remainingMinutes.toString().padStart(2, '0');
resultDiv.innerHTML = 'Total Work Hours: ' + formattedHours + ':' + formattedMinutes + 'Calculated from ' + startTimeInput + ' to ' + endTimeInput + ' with ' + breakDurationMinutes + ' minutes break.';
resultDiv.style.color = '#004a99'; // Blue for success
resultDiv.style.backgroundColor = '#e7f3ff';
resultDiv.style.borderColor = '#004a99';
}
Clock Card Calculator
Work Hours Calculation
Total Work Hours: 00:00
Please enter start time, end time, and break duration.
Understanding the Clock Card Calculator
The clock card calculator is a fundamental tool for accurately determining an employee's total compensated work hours. In many industries, especially those with hourly pay structures, precise tracking of time spent working is crucial for payroll processing, labor cost management, and ensuring fair compensation for employees. This calculator simplifies the process of calculating net work hours by taking into account start times, end times, and any unpaid breaks.
How it Works (The Math Behind It)
The calculation involves several steps to convert time inputs into a usable format and then derive the net work hours:
-
Time Conversion: The start and end times are typically provided in HH:MM format. To perform calculations, these need to be converted into a consistent unit, most commonly minutes.
- Convert Start Time to Minutes: (Hours * 60) + Minutes
- Convert End Time to Minutes: (Hours * 60) + Minutes
-
Calculate Gross Work Duration: Subtract the start time (in minutes) from the end time (in minutes). This gives the total duration the employee was at the workplace.
- Gross Duration (Minutes) = End Time (Minutes) – Start Time (Minutes)
-
Subtract Break Time: The duration of unpaid breaks, provided in minutes, is then subtracted from the gross work duration.
- Net Work Hours (Minutes) = Gross Duration (Minutes) – Break Duration (Minutes)
-
Convert Back to HH:MM Format: The final net work hours, expressed in minutes, are converted back into hours and minutes for easy readability.
- Total Hours = Floor (Net Work Hours (Minutes) / 60)
- Remaining Minutes = Net Work Hours (Minutes) % 60
Use Cases
This calculator is invaluable for:
- Small Businesses: Owners and managers can quickly verify employee timesheets.
- Freelancers: Independent contractors can track their billable hours accurately.
- HR Departments: For processing payroll and ensuring compliance with labor laws.
- Employees: To cross-check their pay and ensure they are compensated correctly for all hours worked.
Accurate time tracking prevents disputes, ensures compliance, and maintains trust between employers and employees.