Hours Calculator — Add Up Worked Hours
Add up hours from multiple start/end times for timesheets and payroll.
✓ updated June 2026
Add a row for each shift or work block; the calculator sums them, subtracts your break from each, and handles overnight shifts. Decimal hours (e.g. 7.50) is what timesheets and payroll expect. Runs entirely in your browser.
Add up the hours you worked across several shifts or sessions. Enter each block's start and end time, set a break, and the calculator totals them — handling overnight shifts and showing decimal hours (e.g. 7.50) that payroll and timesheets expect. Add an hourly rate to estimate pay. A free time card / work hours calculator that runs entirely in your browser.
How to use the Hours Calculator
- Add a row for each work session with its start and end time.
- Set the break per session and, optionally, your hourly rate.
- Read the total time, decimal hours and estimated pay.
Frequently asked questions
How do I add up hours from a time card?
Enter each shift's start and end time on its own row. The calculator works out each duration, subtracts the break, and sums them into a total in hours-and-minutes and decimal hours.
What are decimal hours?
Hours written as a decimal — 7 hours 30 minutes is 7.50. Most payroll systems and invoices use decimal hours, so the tool shows both formats.
Does it handle overnight shifts?
Yes. If an end time is earlier than its start time, it's treated as the next day, so a 22:00–06:00 shift counts as 8 hours.