2-Week Time Card Calculator
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f8f9fa;
color: #333;
line-height: 1.6;
margin: 0;
padding: 20px;
}
.time-calc-container {
max-width: 800px;
margin: 30px auto;
background-color: #ffffff;
padding: 30px;
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
h1, h2 {
color: #004a99;
text-align: center;
margin-bottom: 20px;
}
.input-group {
margin-bottom: 20px;
padding: 15px;
border: 1px solid #e0e0e0;
border-radius: 5px;
background-color: #fdfdfd;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: #004a99;
}
.input-group input[type="number"],
.input-group input[type="time"] {
width: calc(100% – 12px);
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
font-size: 1rem;
}
.button-group {
text-align: center;
margin-top: 30px;
}
button {
background-color: #004a99;
color: white;
padding: 12px 25px;
border: none;
border-radius: 5px;
cursor: pointer;
font-size: 1.1rem;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #003366;
}
#results {
margin-top: 30px;
padding: 25px;
border-top: 2px solid #004a99;
background-color: #e7f3ff;
border-radius: 5px;
}
#results h2 {
margin-top: 0;
color: #004a99;
}
.result-item {
margin-bottom: 15px;
font-size: 1.1rem;
}
.result-item strong {
color: #004a99;
display: inline-block;
min-width: 180px;
}
.total-hours {
font-size: 1.5rem;
font-weight: bold;
color: #28a745;
margin-top: 20px;
padding-top: 15px;
border-top: 1px dashed #ccc;
}
.article-section {
margin-top: 40px;
padding-top: 30px;
border-top: 1px solid #e0e0e0;
}
.article-section h2 {
text-align: left;
}
.article-section p {
margin-bottom: 15px;
}
.article-section code {
background-color: #eef;
padding: 2px 5px;
border-radius: 3px;
}
2-Week Time Card Calculator
Calculation Results
Week 1 Total Hours: —
Week 2 Total Hours: —
Grand Total Hours: —
Understanding the 2-Week Time Card Calculator
This calculator is designed to simplify the process of calculating total work hours over a standard two-week pay period. It accounts for daily start and end times, as well as any unpaid break times taken during each week.
How it Works: The Math Behind the Calculation
The calculator breaks down the process into several steps for each week, and then sums them up for the grand total:
- Time Difference Calculation: For each day, the duration is calculated by subtracting the start time from the end time. This is typically done in minutes to avoid complexities with time formatting.
- Handling Overnight Shifts: If an end time is earlier than a start time (e.g., starting at 10 PM and ending at 6 AM), the calculator assumes the shift crosses midnight. In this case, it adds 24 hours (1440 minutes) to the end time before subtracting the start time.
- Subtracting Break Time: The specified break time (in minutes) for each week is then subtracted from the total calculated duration for that week.
- Summing Weekly Totals: The net hours for Week 1 and Week 2 are calculated separately.
- Grand Total: Finally, the net hours from Week 1 and Week 2 are added together to give the grand total hours for the two-week period.
The formula for a single day's net hours can be conceptually represented as:
(EndTime_in_minutes - StartTime_in_minutes + (if EndTime < StartTime then 1440 else 0)) - BreakTime_in_minutes
Where 1440 minutes represents 24 hours.
Use Cases:
- Employees: Quickly verify their worked hours for payroll.
- Employers/Managers: Ensure accurate payroll processing and labor cost tracking.
- Freelancers: Track billable hours for clients on a bi-weekly basis.
- Project Management: Log time spent on projects over a two-week cycle.
By using this calculator, you can ensure accuracy and save time when dealing with time card calculations for a two-week period. Remember to input your times precisely and include all relevant break durations for the most accurate results.
function calculateTime() {
var week1_start_str = document.getElementById("week1_start").value;
var week1_end_str = document.getElementById("week1_end").value;
var week1_break = parseInt(document.getElementById("week1_break").value) || 0;
var week2_start_str = document.getElementById("week2_start").value;
var week2_end_str = document.getElementById("week2_end").value;
var week2_break = parseInt(document.getElementById("week2_break").value) || 0;
var week1_total_hours = calculateWeeklyHours(week1_start_str, week1_end_str, week1_break);
var week2_total_hours = calculateWeeklyHours(week2_start_str, week2_end_str, week2_break);
var grand_total_hours = week1_total_hours + week2_total_hours;
document.getElementById("week1_total").innerText = formatHours(week1_total_hours);
document.getElementById("week2_total").innerText = formatHours(week2_total_hours);
document.getElementById("grand_total").innerText = formatHours(grand_total_hours);
}
function calculateWeeklyHours(start_str, end_str, break_minutes) {
if (!start_str || !end_str) {
return 0; // Not enough data to calculate
}
var start_parts = start_str.split(':');
var end_parts = end_str.split(':');
var start_hour = parseInt(start_parts[0]);
var start_minute = parseInt(start_parts[1]);
var end_hour = parseInt(end_parts[0]);
var end_minute = parseInt(end_parts[1]);
var start_total_minutes = (start_hour * 60) + start_minute;
var end_total_minutes = (end_hour * 60) + end_minute;
var duration_minutes = end_total_minutes – start_total_minutes;
// Handle shifts crossing midnight
if (duration_minutes < 0) {
duration_minutes += 24 * 60; // Add 1440 minutes for a full day
}
var net_minutes = duration_minutes – break_minutes;
// Ensure net minutes are not negative (e.g., if break is longer than shift)
if (net_minutes < 0) {
net_minutes = 0;
}
return net_minutes / 60; // Convert minutes to hours
}
function formatHours(totalHours) {
if (isNaN(totalHours) || totalHours < 0) {
return "–";
}
var hours = Math.floor(totalHours);
var minutes = Math.round((totalHours – hours) * 60);
// Adjust if rounding minutes pushes hours up
if (minutes === 60) {
hours += 1;
minutes = 0;
}
return hours + "h " + (minutes < 10 ? "0" : "") + minutes + "m";
}
// Initial call to set defaults or clear if needed (optional)
// calculateTime();