Managing employee hours is critical for payroll accuracy and labor law compliance. This Redcort-style timesheet calculator helps you manually calculate weekly totals by accounting for start times, end times, and unpaid break periods. This logic mirrors the calculations found in professional software like Virtual TimeClock.
Understanding the 7-Minute Rounding Rule
Many businesses use the "7-minute rule" to simplify payroll. In this system, any time between 1 and 7 minutes is rounded down to the nearest 15-minute increment, while any time between 8 and 14 minutes is rounded up. If you check the "Round to nearest 15 mins" box, our calculator will apply this logic to each daily total before summing the week.
Calculation Examples
Standard Day: Start at 8:00 AM, Break from 12:00 PM to 1:00 PM, End at 5:00 PM = 8.00 Hours.
Overtime Check: If Monday-Friday totals 42.50 hours, you have 2.50 hours of overtime (assuming a 40-hour threshold).
Short Break: Start at 9:00 AM, End at 3:15 PM, No Break = 6.25 Hours.
Why Manual Calculation Still Matters
Even with automated systems, payroll administrators often need to verify specific entries or handle manual timesheets for contractors. Using a dedicated timesheet calculator reduces human error compared to basic mental math, ensuring that decimal conversions (like 15 minutes = 0.25 hours) are always precise.
function calculateTotalHours() {
var days = ['m', 't', 'w', 'th', 'f'];
var totalMinutes = 0;
var roundTo15 = document.getElementById('round15′).checked;
for (var i = 0; i breakOutMins) {
breakDuration = breakInMins – breakOutMins;
}
dailyMins = workDuration – breakDuration;
if (dailyMins < 0) dailyMins = 0;
if (roundTo15) {
dailyMins = Math.round(dailyMins / 15) * 15;
}
totalMinutes += dailyMins;
}
}
var totalHours = totalMinutes / 60;
document.getElementById('totalResult').innerHTML = totalHours.toFixed(2) + " Hours";
document.getElementById('decimalDetail').innerHTML = "Total Minutes: " + totalMinutes;
}
function timeToMins(timeStr) {
if (!timeStr) return 0;
var parts = timeStr.split(':');
return (parseInt(parts[0]) * 60) + parseInt(parts[1]);
}
// Initialize calculation on load
window.onload = function() {
calculateTotalHours();
};