Timesheet Calculator
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
line-height: 1.6;
margin: 0;
padding: 20px;
background-color: #f8f9fa;
color: #333;
}
.timesheet-calc-container {
max-width: 800px;
margin: 20px auto;
padding: 30px;
background-color: #ffffff;
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 74, 153, 0.1);
border: 1px solid #e0e0e0;
}
h1 {
color: #004a99;
text-align: center;
margin-bottom: 30px;
font-size: 2.2em;
}
.input-group {
margin-bottom: 20px;
display: flex;
align-items: center;
gap: 15px;
flex-wrap: wrap;
}
.input-group label {
display: inline-block;
min-width: 150px;
font-weight: 600;
color: #004a99;
}
.input-group input[type="number"],
.input-group input[type="time"],
.input-group select {
padding: 10px 15px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 1em;
flex-grow: 1;
min-width: 180px;
box-sizing: border-box;
}
.input-group input[type="number"]:focus,
.input-group input[type="time"]:focus,
.input-group select:focus {
outline: none;
border-color: #004a99;
box-shadow: 0 0 0 3px rgba(0, 74, 153, 0.2);
}
button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #28a745;
color: white;
border: none;
border-radius: 5px;
font-size: 1.2em;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 20px;
}
button:hover {
background-color: #218838;
}
.result-container {
margin-top: 30px;
padding: 25px;
background-color: #e9ecef;
border-left: 5px solid #004a99;
border-radius: 5px;
text-align: center;
}
.result-container h2 {
margin-top: 0;
color: #004a99;
font-size: 1.8em;
}
#totalHours, #totalMinutes {
font-size: 2em;
font-weight: bold;
color: #28a745;
}
#errorMessage {
color: #dc3545;
font-weight: bold;
text-align: center;
margin-top: 15px;
}
.article-content {
margin-top: 40px;
padding: 25px;
background-color: #ffffff;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0, 74, 153, 0.05);
border: 1px solid #e0e0e0;
}
.article-content h2 {
color: #004a99;
border-bottom: 2px solid #004a99;
padding-bottom: 10px;
margin-bottom: 20px;
}
.article-content p, .article-content ul, .article-content li {
margin-bottom: 15px;
}
.article-content ul {
list-style-type: disc;
margin-left: 25px;
}
@media (max-width: 600px) {
.input-group {
flex-direction: column;
align-items: stretch;
gap: 10px;
}
.input-group label {
min-width: auto;
margin-bottom: 5px;
}
.input-group input[type="number"],
.input-group input[type="time"],
.input-group select {
min-width: auto;
}
h1 {
font-size: 1.8em;
}
.result-container h2 {
font-size: 1.5em;
}
#totalHours, #totalMinutes {
font-size: 1.8em;
}
}
Timesheet Hour Calculator
Results
Total Working Hours:
00:00
Estimated Pay:
$0.00
Understanding Your Timesheet Calculations
Accurately tracking work hours is crucial for both employees and employers. This calculator helps simplify the process by calculating the total duration of a work period, factoring in breaks, and estimating your pay based on an hourly rate. Understanding the logic behind these calculations ensures transparency and helps in managing your work schedule and compensation effectively.
How the Calculation Works:
The calculator performs the following steps:
- Time Difference Calculation: It first determines the total time elapsed between the start and end times.
- Break Subtraction: Any specified break durations (both regular breaks and meal breaks) are subtracted from the total elapsed time. This gives you the net working hours.
- Pay Estimation: The net working hours are then converted into a decimal format (e.g., 7 hours and 30 minutes becomes 7.5 hours) and multiplied by your hourly rate to estimate your gross pay.
Detailed Steps:
- Convert Times to Minutes: Both start and end times are converted into minutes from midnight. For example, 9:30 AM becomes (9 * 60) + 30 = 570 minutes, and 5:00 PM becomes (17 * 60) + 0 = 1020 minutes.
- Calculate Elapsed Minutes: The difference between the end time minutes and start time minutes gives the total elapsed minutes. In our example: 1020 – 570 = 450 minutes. If the end time is on the next day (e.g., start 10 PM, end 2 AM), add 24 hours (1440 minutes) to the end time minutes before subtracting.
- Calculate Total Break Minutes: Sum the duration of regular breaks and meal breaks entered in minutes. For example, a 30-minute break and a 60-minute meal break total 90 minutes.
- Calculate Net Working Minutes: Subtract the total break minutes from the elapsed minutes. Example: 450 minutes (elapsed) – 90 minutes (breaks) = 360 net working minutes.
- Convert Net Minutes to Hours and Minutes: Divide the net working minutes by 60 to get the total hours and the remainder will be the minutes. Example: 360 minutes / 60 = 6 hours and 0 minutes.
- Calculate Estimated Pay: Convert the net working minutes into hours (by dividing by 60). Then multiply this decimal hour value by the hourly rate. Example: (360 minutes / 60 minutes/hour) * $15/hour = 6 hours * $15/hour = $90.00.
Use Cases:
- Employees: Verify the accuracy of hours worked for payroll, ensure correct overtime calculations, and track time spent on different tasks.
- Freelancers: Quickly calculate billable hours for invoicing clients.
- Small Businesses: Streamline payroll processing by having a reliable tool to sum up employee work hours.
- Project Management: Estimate project completion times and associated labor costs.
By using this calculator, you can maintain accurate records, ensure fair compensation, and manage your work time more efficiently.
function calculateTimesheet() {
var startTimeInput = document.getElementById("startTime").value;
var endTimeInput = document.getElementById("endTime").value;
var breakDurationMinutesInput = document.getElementById("breakDurationMinutes").value;
var mealBreakDurationMinutesInput = document.getElementById("mealBreakDurationMinutes").value;
var hourlyRateInput = document.getElementById("hourlyRate").value;
var errorMessageDiv = document.getElementById("errorMessage");
var totalHoursSpan = document.getElementById("totalHours");
var totalMinutesSpan = document.getElementById("totalMinutes");
var estimatedPaySpan = document.getElementById("estimatedPay");
errorMessageDiv.textContent = "";
totalHoursSpan.textContent = "00";
totalMinutesSpan.textContent = "00";
estimatedPaySpan.textContent = "$0.00";
if (!startTimeInput || !endTimeInput || !breakDurationMinutesInput || !mealBreakDurationMinutesInput || !hourlyRateInput) {
errorMessageDiv.textContent = "Please fill in all fields.";
return;
}
var breakDurationMinutes = parseInt(breakDurationMinutesInput);
var mealBreakDurationMinutes = parseInt(mealBreakDurationMinutesInput);
var hourlyRate = parseFloat(hourlyRateInput);
if (isNaN(breakDurationMinutes) || breakDurationMinutes < 0) {
errorMessageDiv.textContent = "Invalid input for Break Duration. Please enter a non-negative number.";
return;
}
if (isNaN(mealBreakDurationMinutes) || mealBreakDurationMinutes < 0) {
errorMessageDiv.textContent = "Invalid input for Meal Break Duration. Please enter a non-negative number.";
return;
}
if (isNaN(hourlyRate) || hourlyRate < 0) {
errorMessageDiv.textContent = "Invalid input for Hourly Rate. Please enter a non-negative number.";
return;
}
var startParts = startTimeInput.split(':');
var endParts = endTimeInput.split(':');
var startHour = parseInt(startParts[0]);
var startMinute = parseInt(startParts[1]);
var endHour = parseInt(endParts[0]);
var endMinute = parseInt(endParts[1]);
var startTotalMinutes = (startHour * 60) + startMinute;
var endTotalMinutes = (endHour * 60) + endMinute;
var elapsedMinutes;
if (endTotalMinutes = elapsedMinutes) {
errorMessageDiv.textContent = "Total break duration is greater than or equal to elapsed time.";
return;
}
var netWorkingMinutes = elapsedMinutes – totalBreakMinutes;
var netWorkingHoursDecimal = netWorkingMinutes / 60;
var totalHours = Math.floor(netWorkingHoursDecimal);
var totalMinutes = Math.round((netWorkingHoursDecimal – totalHours) * 60);
var estimatedPay = netWorkingHoursDecimal * hourlyRate;
totalHoursSpan.textContent = String(totalHours).padStart(2, '0');
totalMinutesSpan.textContent = String(totalMinutes).padStart(2, '0');
estimatedPaySpan.textContent = "$" + estimatedPay.toFixed(2);
}