Hours & Minutes Calculator

How time card calculators work

A time card calculator adds up shift durations to produce accurate hour totals for payroll. Most businesses track time in either hh:mm format (hours:minutes like 8:30) or decimal hours (like 8.5). This calculator handles both formats and converts between them automatically.

When you enter an hourly rate, the tool estimates gross pay before taxes and deductions in real time. Your data is automatically saved in your browser's local storage, so you can return to your timesheet calculations later.

How to use this free tool

Enter each shift in the duration column using either hh:mm or decimal hours. Switch the mode to decimal if you prefer typing values such as 7.5 instead of 7:30, and add an hourly rate to preview earnings in real time. Use the More Rows button for longer time cards and the Clear Data option to reset the table.

1. Choose whether you want to enter times in hh:mm or decimal format.
2. Type each shift's duration and, if needed, an hourly rate to estimate pay.
3. Download or copy the totals once you are ready to move them into payroll.

Common time conversions (hh:mm ↔ decimal)

Understanding how to convert between hh:mm and decimal hours is essential for payroll and time tracking. This reference table shows the most common conversions you'll encounter on timesheets and time cards.