— Total Hours Worked
— Regular Hours
— Overtime Hours
— Total Pay
Understanding Your Time Card Calculation
This calculator helps you accurately determine your total hours worked, regular hours, overtime hours, and total pay based on your start time, end time, break duration, hourly rate, and overtime rules.
How it Works:
The calculation involves several steps:
Calculating Total Duration: The difference between your end time and start time is calculated.
Subtracting Break Time: The specified break duration (in minutes) is subtracted from the total duration to get the net working time.
Determining Regular and Overtime Hours:
A standard workday is typically 8 hours. If your net working time exceeds this threshold (defined by "Overtime Threshold"), the hours beyond the threshold are considered overtime.
The "Overtime Threshold" is the number of hours an employee must work in a day before overtime pay applies.
Calculating Pay:
Regular hours are paid at your base hourly rate.
Overtime hours are paid at your hourly rate multiplied by the "Overtime Rate Multiplier" (e.g., 1.5 for time-and-a-half).
The total pay is the sum of the pay for regular hours and overtime hours.
Example Calculation:
Let's say you worked the following:
Start Time: 09:00
End Time: 18:30
Break Duration: 60 minutes
Hourly Rate: $20.00
Overtime Rate Multiplier: 1.5
Overtime Threshold: 8 hours
Step 1: Total Duration
From 09:00 to 18:30 is 9 hours and 30 minutes (9.5 hours).
Step 2: Subtract Break Time
9.5 hours – 1 hour (60 minutes) = 8.5 hours of net working time.
This calculator is a useful tool for employees to track their hours and ensure they are paid correctly, especially when dealing with varying work schedules and overtime. It's also helpful for employers to manage payroll accurately.
function calculateTimeCard() {
var startTimeStr = document.getElementById("startTime").value;
var endTimeStr = document.getElementById("endTime").value;
var breakDurationMinutes = parseFloat(document.getElementById("breakDurationMinutes").value);
var hourlyRate = parseFloat(document.getElementById("hourlyRate").value);
var overtimeRateMultiplier = parseFloat(document.getElementById("overtimeRateMultiplier").value);
var overtimeThresholdHours = parseFloat(document.getElementById("overtimeThresholdHours").value);
// — Input Validation —
if (!startTimeStr || !endTimeStr || isNaN(breakDurationMinutes) || isNaN(hourlyRate) || isNaN(overtimeRateMultiplier) || isNaN(overtimeThresholdHours) ||
breakDurationMinutes < 0 || hourlyRate < 0 || overtimeRateMultiplier < 1 || overtimeThresholdHours < 0) {
document.getElementById("totalHours").innerText = "Error";
document.getElementById("regularHours").innerText = "Error";
document.getElementById("overtimeHours").innerText = "Error";
document.getElementById("totalPay").innerText = "Error – Please check inputs";
return;
}
// — Time Calculation —
var startDateTime = new Date("1970-01-01T" + startTimeStr + ":00");
var endDateTime = new Date("1970-01-01T" + endTimeStr + ":00");
// Handle cases where end time is on the next day (e.g., shift ending after midnight)
if (endDateTime < startDateTime) {
endDateTime.setDate(endDateTime.getDate() + 1);
}
var totalDurationMilliseconds = endDateTime – startDateTime;
var totalDurationHours = totalDurationMilliseconds / (1000 * 60 * 60);
var netWorkingHours = totalDurationHours – (breakDurationMinutes / 60);
// Ensure net working hours are not negative
if (netWorkingHours overtimeThresholdHours) {
regularHours = overtimeThresholdHours;
overtimeHours = netWorkingHours – overtimeThresholdHours;
} else {
regularHours = netWorkingHours;
}
// — Pay Calculation —
var regularPay = regularHours * hourlyRate;
var overtimePay = overtimeHours * (hourlyRate * overtimeRateMultiplier);
var totalPay = regularPay + overtimePay;
// — Display Results —
document.getElementById("totalHours").innerText = netWorkingHours.toFixed(2);
document.getElementById("regularHours").innerText = regularHours.toFixed(2);
document.getElementById("overtimeHours").innerText = overtimeHours.toFixed(2);
document.getElementById("totalPay").innerText = "$" + totalPay.toFixed(2);
}