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Work hours calculator: shifts, breaks and pay

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All lines

Write a shift as it appears on the rota, 9:00 - 18:00, subtract the break, multiply by days and by the hourly rate. A night shift 22:00 - 6:00 gives 8 hours, not a negative number.

How it works

Two clock times with a dash are read as a range: 9:00 - 18:00 is 9 hours. Times can be added and subtracted, 8:15 + 7:45, multiplied by a number of days, worked * 22, and by a rate: worked * $25 gives the pay. For decimal hours on a timesheet, write 8:15 in hours.

Night shifts and breaks

A shift past midnight is counted correctly: 22:00 - 6:00 gives 8:00, and the note under the answer says “past midnight”. Keep the break on its own line and subtract it from every shift.

Examples: what you type and what you get

You typeYou get
9:00
8:00
8:00
25:00
$200
8.25 h
1.5 h

Common questions

How do I total a month?

Write each shift on a line, or one typical shift multiplied: worked * 22. A total line adds up every shift on the sheet.

Why is 17:30 - 9:00 equal to 8:30 but 9:00 - 18:00 equal to 9:00?

When the second time is later, the calculator reads a range from the first time to the second. When it is earlier, it reads a difference or an overnight shift, depending on how it is written. The note under the answer shows how the line was read.

How do I convert hours and minutes to decimals?

Add “in hours”: 8:15 in hours gives 8.25 h, the format timesheets and payroll use.

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