Accurately tracking work hours and calculating pay is crucial for both employees and employers. This free timesheet calculator simplifies the process by taking your start time, end time, break duration, and hourly rate to provide a clear summary of your total work hours and expected earnings.
How the Calculation Works:
The calculator performs a series of steps to determine your total payable hours and gross pay:
Time Conversion: Your start and end times are converted into a consistent format (e.g., 24-hour clock or minutes since midnight) to facilitate accurate duration calculation. Special attention is paid to AM/PM conversions and handling times that cross midnight.
Total Duration: The difference between the end time and start time is calculated to find the total duration spent at work.
Subtract Break Time: The specified break duration (in minutes) is subtracted from the total duration. This ensures you are only compensated for actual working time.
Convert to Hours: The net working duration (total duration minus break) is converted into hours. This is typically done by dividing the total minutes worked by 60.
Calculate Gross Pay: The total payable hours are multiplied by your hourly rate to determine your gross earnings before taxes and deductions.
Input Fields Explained:
Start Time: The exact time you began working for the day. Please use the format HH:MM AM/PM (e.g., 08:00 AM, 1:00 PM).
End Time: The exact time you finished working for the day. Use the same HH:MM AM/PM format (e.g., 05:00 PM, 11:30 PM). The calculator can handle shifts that cross midnight.
Break Duration (in minutes): The total amount of time you took for breaks during your shift (e.g., 30 minutes for lunch, 15 minutes for a short break).
Hourly Rate ($): Your agreed-upon pay rate per hour. This is used to calculate your gross earnings.
Why Use a Timesheet Calculator?
Accuracy: Minimizes manual calculation errors, ensuring you are paid correctly for the hours you've worked.
Efficiency: Quickly calculates hours and pay, saving time compared to manual methods.
Transparency: Provides a clear breakdown of hours and earnings, fostering trust and clarity in payroll.
Record Keeping: Helps maintain a reliable record of your work hours for personal tracking or potential disputes.
This calculator is a helpful tool for freelancers, employees tracking their hours, or small business owners managing payroll. Always verify the final calculated pay with your official pay stubs for complete accuracy.
function parseTime(timeStr) {
var timeParts = timeStr.match(/(\d{1,2}):(\d{2})\s*(AM|PM)?/i);
if (!timeParts) return null;
var hours = parseInt(timeParts[1], 10);
var minutes = parseInt(timeParts[2], 10);
var ampm = timeParts[3] ? timeParts[3].toUpperCase() : ";
if (ampm === 'PM' && hours < 12) {
hours += 12;
}
if (ampm === 'AM' && hours === 12) {
hours = 0; // Midnight case
}
if (hours 23 || minutes 59) {
return null; // Invalid time components
}
return hours * 60 + minutes; // Total minutes from midnight
}
function formatHours(totalMinutes) {
var hours = Math.floor(totalMinutes / 60);
var minutes = totalMinutes % 60;
return hours + 'h ' + minutes + 'm';
}
function calculateTimesheet() {
var startTimeStr = document.getElementById("startTime").value;
var endTimeStr = document.getElementById("endTime").value;
var breakDurationMinutes = parseInt(document.getElementById("breakDurationMinutes").value, 10);
var hourlyRate = parseFloat(document.getElementById("hourlyRate").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = "; // Clear previous results
if (isNaN(breakDurationMinutes) || breakDurationMinutes < 0) {
resultDiv.innerHTML = "Please enter a valid non-negative number for break duration.";
return;
}
if (isNaN(hourlyRate) || hourlyRate = startMinutes) {
totalDurationMinutes = endMinutes – startMinutes;
} else {
// Handles shifts crossing midnight (e.g., 10 PM to 6 AM)
// Total minutes in a day = 24 * 60 = 1440
totalDurationMinutes = (1440 – startMinutes) + endMinutes;
}
var payableMinutes = totalDurationMinutes – breakDurationMinutes;
if (payableMinutes < 0) {
payableMinutes = 0; // Cannot have negative payable time
}
var payableHours = payableMinutes / 60;
var grossPay = payableHours * hourlyRate;
var formattedPayableHours = formatHours(payableMinutes);
resultDiv.innerHTML = 'Total Hours Worked: ' + formattedPayableHours + '' +
'Gross Pay: $' + grossPay.toFixed(2) + '';
}
function resetForm() {
document.getElementById("startTime").value = "";
document.getElementById("endTime").value = "";
document.getElementById("breakDurationMinutes").value = "0";
document.getElementById("hourlyRate").value = "0.00";
document.getElementById("result").innerHTML = "";
}