Time & Hours Calculator

Fill in a weekly time card with start time, end time and unpaid break to get each day's hours and the weekly total in hours, minutes and decimal hours, with optional pay. Two more tabs add or subtract durations and find the time between two clock times, including past midnight.

Free, no signupNo daily limitRuns in your browser - nothing you enter is uploadedUpdated 7 October 2026

Day	Start	End	Unpaid break (min)	Hours	Decimal	Remove
Week total				-	-

Hourly rate (optional)

-Total hours worked

-Decimal hours

Worked example: one week on the time card

Day	Start - end	Break	Hours
Mon-Thu (each)	09:00 - 17:30	30 min	8 h 00 m
Friday	09:00 - 15:15	15 min	6 h 00 m
Week			38 h 00 m

Monday: 17:30 − 09:00 = 8 h 30 m, minus 30 m break = 8 h 00 m = 8.00 Week: 4 × 8.00 + 6.00 = 38.00 hours At 15 per hour: 38.00 × 15 = 570.00

A night shift from 22:00 to 06:00 crosses midnight: the end is earlier than the start, so a day is added and the shift is 8 hours.

Hours and minutes vs decimal hours

Clocks count in base 60, payroll counts in base 10. 7 hours 45 minutes is 7.75 hours, not 7.45. Mixing the two up is the most common timesheet error - at 15 per hour it costs 4.50.

Minutes	Decimal	Minutes	Decimal
5	0.08	35	0.58
10	0.17	40	0.67
15	0.25	45	0.75
20	0.33	50	0.83
25	0.42	55	0.92
30	0.50	60	1.00

Each day's decimal is shown to two places, but the week total and pay are worked out from exact minutes, so rounding never adds up across days.

Frequently asked questions

How do I calculate hours worked?

Subtract the start time from the end time and then subtract any unpaid break. 09:00 to 17:30 is 8 hours 30 minutes; minus a 30-minute break that is 8 hours 00 minutes.

How do I convert hours and minutes to decimal hours?

Divide the minutes by 60 and add them to the hours. 7 hours 45 minutes is 7 + 45 / 60 = 7.75 hours. Payroll systems usually want decimal hours.

Does it handle night shifts that go past midnight?

Yes. If the end time is earlier than the start time, the shift is treated as ending the next day. 22:00 to 06:00 is 8 hours.

How is pay worked out?

Total decimal hours multiplied by the hourly rate you enter. It does not add overtime, tax or deductions.

Can I add up several durations?

Yes. In the "Add & subtract" tab enter hours, minutes and seconds on each row and set each row to + or −. 1:45 plus 2:30 is 4:15.

Can I print the timesheet?

Yes. Press "Print timesheet" for a clean printout of the days, hours and totals without the rest of the page.

What this calculator does not do

No overtime rules, tax or deductions - those depend on your country and contract.
A single shift cannot be longer than 24 hours.
Times are entered with your browser's time picker; daylight saving changes during a shift are not adjusted.

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Step-by-step guide: How to calculate hours worked →

Adding up staff hours by hand every week? See how we automate timesheets and admin →

Built and checked by Taimur Hassan Siddiqui, who has more than ten years in computer-science education. The formulas on this page are covered by an automated test suite, and the worked example on this page is one of its cases. Last updated 7 October 2026.