PlainTools

Hours Worked Calculator

Enter start, end and break times for each day and get total hours worked, overtime over 40 and gross pay.

Dates & TimeUnited States onlySource: Shift arithmetic; U.S. DOL FLSA overtime (Fact Sheet #23)Free, no sign-up
DayStartEndUnpaid break (min)
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Leave a day blank if you did not work it. An end time earlier than the start counts as an overnight shift.

Hours worked this week

40 h 00 min (40 hours)

40 regular + 0 overtime hours

DayHoursDecimal
Monday8 h 00 min8
Tuesday8 h 00 min8
Wednesday8 h 00 min8
Thursday8 h 00 min8
Friday8 h 00 min8

What this page cannot tell you

Gross pay before tax and deductions. Some states (California among them) also require daily overtime or double time, and some jobs are exempt from overtime; the page applies only the weekly threshold and multiplier you set. Rounding rules for clock punches are your employer's.

Method: end − start (plus 24 h when the shift crosses midnight) − unpaid break, summed; hours over the weekly threshold are overtime at the multiplier. The federal FLSA standard is over 40 hours in a workweek at not less than 1.5× the regular rate (U.S. DOL Fact Sheet #23). Retrieved 2026-10-24.

How to calculate hours worked in a week

  1. Enter each day's start and end. Use 9:00 AM, 9am or 09:00. Leave days off blank.
  2. Add unpaid breaks. Minutes of unpaid lunch or breaks each day.
  3. Set pay and overtime. Optional hourly rate; 40-hour threshold and 1.5× multiplier by default.
  4. Read the totals. Hours per day, weekly total, regular and overtime hours, and gross pay.

10 reasons to add up hours worked

Checking a paycheck

An hourly worker compares their own total with the hours on the pay stub.

Filling in a paper timesheet

A part-time worker converts clock times into decimal hours for the form.

Overnight shifts

A security guard working 10 PM to 6 AM gets the right total across midnight.

Freelance invoicing

A contractor adds up the week's hours before billing a client.

Overtime disputes

A worker sees how many hours went over 40 in a workweek.

Small business payroll

An owner checks an employee's weekly hours before running payroll.

Babysitters and caregivers

A nanny totals the week's hours to bill a family.

Second jobs

Someone working two jobs tracks hours at each.

Unpaid lunch deductions

A worker sees how much a 30-minute unpaid break takes off each day.

Planning a schedule

A manager checks a draft rota stays under the overtime threshold.

How the hours and overtime are worked out

Each day's hours are end time minus start time, plus 24 hours if the shift crosses midnight, minus the unpaid break. Days are added for the weekly total, shown in hours and minutes and as decimal hours.

Overtime is the hours over the weekly threshold. Under the federal Fair Labor Standards Act, covered non-exempt employees must be paid at least one and a half times the regular rate for hours over 40 in a workweek (U.S. Department of Labor, Fact Sheet #23). The threshold and multiplier are inputs because some states and contracts differ.

Limits: gross pay before tax. Daily overtime rules (such as California's), double time, exemptions, paid breaks and punch-rounding policies are not applied. The page does not decide whether overtime is owed.

Frequently asked questions

How do I calculate hours worked?

End time minus start time, minus unpaid breaks, for each day, then add the days.

How do I convert minutes to decimal hours?

Divide by 60: 45 minutes is 0.75 hours, 30 minutes is 0.5.

How are overnight shifts handled?

If the end time is earlier than the start time, the shift is counted as crossing midnight.

When does overtime start?

Under the federal FLSA, after 40 hours in a workweek for covered non-exempt employees. Some states add daily rules.

Is overtime always 1.5 times pay?

Federal law sets at least 1.5 times the regular rate; employers and states can require more.

Are breaks paid?

Enter only unpaid breaks. Under federal rules, short breaks are generally counted as work time, while bona fide meal periods usually are not.

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