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Work Hours CalculatorFree Online Tool

Enter clock-in and clock-out times, deduct lunch breaks, click Calculate, and see net paid hours — with overnight shift support.

Work Hours Calculator

Work hours

Click Calculate to see results.

Gross hours-:-- (-.-h)
Break deducted-- min
Net paid hours-:-- (-.-h)

Free Work Hours Calculator for Clock In and Clock Out

This work hours calculator turns your clock-in and clock-out times into accurate paid hours. Subtract lunch break minutes, view results in decimal hours or h:mm format, and handle overnight shifts that cross midnight — all in your browser with no signup.

  • Clock in/out with AM/PM or 24-hour entry
  • Deduct lunch break or lunch minutes
  • Click Calculate to update gross and net hours
  • Overnight shifts calculated automatically

How to Calculate Work Hours

Work hours from clock in and clock out are gross shift time minus lunch breaks. Convert both times to minutes, subtract, then express the result as h:mm or decimal hours for payroll.

Formula

Gross minutes = Clock out − Clock in (add 24 hours if overnight)

Net paid minutes = Gross minutes − Lunch break minutes

Decimal hours = Net paid minutes ÷ 60

  1. Convert clock-in and clock-out to minutes from midnight.
  2. If clock-out is earlier on the clock than clock-in, add 24 hours to clock-out (overnight shift).
  3. Subtract lunch break minutes from gross minutes.
  4. Divide net minutes by 60 for decimal hours, or format as h:mm.
  5. Click Calculate to run the calculation and update the results panel.

Example Calculation

A standard weekday shift: clock in at 9:00 AM, clock out at 5:30 PM, with a 30-minute lunch break.

Worked example

Gross = 5:30 PM − 9:00 AM = 510 min (8 h 30 min)

Net paid = 510 min − 30 min break = 480 min

Result = 8:00 (8.00 decimal hours)

Free work hours calculator example: clock in 9:00 AM, clock out 5:30 PM, 30-minute lunch break, gross hours 8:30, and 8:00 net paid hours in decimal and h:mm format after Calculate
9:00 AM–5:30 PM with a 30-minute lunch break → 8.00 net paid hours after Calculate.
FAQ

Frequently asked questions

Subtract clock-in from clock-out to get gross minutes, then subtract lunch break minutes. This calculator does that automatically and shows net paid hours in both h:mm and decimal format.
Yes. When clock-out is earlier than clock-in on the clock (for example 10:00 PM to 6:00 AM), the tool treats it as an overnight shift and adds 24 hours to the end time.
Many payroll systems accept decimal hours (such as 7.5 for seven hours thirty minutes). Others prefer h:mm. This calculator shows both so you can match your employer's format.
Yes. Enter break minutes in the lunch break field and they are subtracted from gross shift time to calculate net paid hours.

Related tools

Need a printable template? Download a free employee time card or biweekly timesheet in PDF or Excel.

Download PDF

Estimate only. Not tax, legal, or payroll advice. Overtime rules, break policies, and rounding vary by employer, state, and country. Confirm totals with your payroll department before submitting a timesheet.

Need print, CSV export, custom pay periods, or advanced overtime? Use the full time card calculator on the home page.