Employee Time Calculator

Employee Time Calculator

Accurately calculate daily work hours and payroll decimals

Shift Summary

Total Time 0h 0m
Decimal Hours 0.00

* This shift includes an overnight crossover.


How to Use the Employee Time Calculator

Calculating work hours accurately is essential for both payroll processing and compliance with labor laws. This employee time calculator helps you convert clock-in and clock-out times into total hours and minutes, as well as the decimal format required for most accounting software.

Instructions:

  • Start and End Time: Enter the exact time the employee began and ended their shift. The calculator supports 24-hour logic, so if a shift ends after midnight (e.g., starts at 10:00 PM and ends at 6:00 AM), it will automatically calculate the correct duration.
  • Unpaid Break: Enter the total number of minutes taken for lunch or breaks that should be excluded from the paid total.
  • Decimal Hours: This value is the total time represented as a number (e.g., 8 hours and 30 minutes becomes 8.50). This is the number you typically enter into payroll systems.

Calculation Example:

Suppose an employee starts work at 08:30 AM and finishes at 05:15 PM (17:15) with a 45-minute unpaid lunch break.

  1. Gross Time: 8 hours and 45 minutes (08:30 to 17:15).
  2. Subtract Break: 8 hours 45 minutes – 45 minutes = 8 hours 0 minutes.
  3. Decimal Output: 8.00 hours.

Converting Minutes to Decimals

To calculate decimal hours manually, divide the minutes by 60. For example:

  • 15 minutes = 15 / 60 = 0.25
  • 30 minutes = 30 / 60 = 0.50
  • 45 minutes = 45 / 60 = 0.75
function calculateEmployeeTime() { var startTimeStr = document.getElementById('startTime').value; var endTimeStr = document.getElementById('endTime').value; var breakMins = parseInt(document.getElementById('breakMinutes').value); if (!startTimeStr || !endTimeStr) { alert("Please enter both start and end times."); return; } if (isNaN(breakMins)) { breakMins = 0; } var startParts = startTimeStr.split(':'); var endParts = endTimeStr.split(':'); var startTotalMinutes = (parseInt(startParts[0]) * 60) + parseInt(startParts[1]); var endTotalMinutes = (parseInt(endParts[0]) * 60) + parseInt(endParts[1]); var overnight = false; var durationMinutes = 0; if (endTotalMinutes < startTotalMinutes) { // Shift crosses midnight durationMinutes = (1440 – startTotalMinutes) + endTotalMinutes; overnight = true; } else { durationMinutes = endTotalMinutes – startTotalMinutes; } // Subtract break var netMinutes = durationMinutes – breakMins; if (netMinutes < 0) { alert("Break time cannot be longer than shift duration."); return; } var finalHours = Math.floor(netMinutes / 60); var finalMins = netMinutes % 60; var decimalHours = (netMinutes / 60).toFixed(2); // Display document.getElementById('resultsArea').style.display = 'block'; document.getElementById('displayTotalTime').innerHTML = finalHours + "h " + finalMins + "m"; document.getElementById('displayDecimalTime').innerHTML = decimalHours; var notice = document.getElementById('overnightNotice'); if (overnight) { notice.style.display = 'block'; } else { notice.style.display = 'none'; } }

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