How do I calculate total hours worked?

To calculate total hours worked, subtract your start time from your end time, then subtract any unpaid breaks (like a 30-minute lunch). Our calculator handles overnight shifts and military time automatically.

How do you convert minutes to decimal hours for payroll?

To convert minutes to decimal hours, divide the minutes by 60. For example, 30 minutes divided by 60 equals 0.5 hours. 45 minutes divided by 60 equals 0.75 hours.

Work Hours Calculator

Stop guessing your timesheet. Enter your start time, end time, and unpaid breaks below to instantly calculate your exact billable hours for payroll.

Your Daily Timesheet

Clock-In / Start Time

Clock-Out / End Time

Unpaid Break Time (Lunch, etc.)

Minutes

Auditing Timesheet...

Calculating time diff, subtracting breaks, and formatting for payroll.

Net Productive Time (Payroll Format)

0.00

0 Hours & 0 Minutes

Gross Shift Duration

0.00

Total time elapsed between clock-in and clock-out, before breaks.

Break Deductions

0.00

Unpaid break time converted to decimal hours and removed from your pay.

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The Ultimate Work Hours Calculator: Audit Your Timesheet

Whether you are an hourly employee verifying your weekly paycheck, or a freelancer calculating billable hours for a client invoice, tracking your time manually is a recipe for disaster. Our free work hours calculator removes human error, automatically handling the complex math of 60-minute cycles, overnight shifts, and unpaid break deductions.

Decimal Hours vs. Hours and Minutes

One of the most confusing aspects of filling out a timesheet is formatting. If you work 7 hours and 30 minutes, you cannot simply write "7.30" on your payroll form. Because time operates on a base-60 system (60 minutes in an hour) and money operates on a base-100 decimal system, you must convert your minutes.

Hours and Minutes Format: Example: 7h 30m. This is how humans read time on a clock.

Decimal Format (Payroll): Example: 7.50 hours. This is how accounting software multiplies your time by your hourly wage. (30 minutes / 60 = 0.50).

Our calculator automatically outputs both formats simultaneously, so you know exactly what to put on your official timesheet.

How to Calculate Total Hours Worked Manually

If you don't have access to our calculator, here is the formula to calculate your work hours accurately:

Convert to Military Time: If you work past 1:00 PM, add 12 to the hours. (e.g., 5:00 PM becomes 17:00).
Subtract Start Time from End Time: If you worked from 09:00 to 17:00, the math is 17 - 9 = 8 total hours.
Deduct Unpaid Breaks: If you took a 30-minute unpaid lunch, subtract 0.5 hours from your total. (8 - 0.5 = 7.5 Net Billable Hours).

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What About Overnight Shifts?

A major flaw in basic time card calculators is the "overnight break." If you clock in at 10:00 PM (22:00) and clock out at 6:00 AM (06:00) the next day, a standard subtraction (6 - 22) results in a negative number. Our programmatic engine recognizes when the end time is numerically smaller than the start time and automatically adds 24 hours to the equation, ensuring graveyard shift workers get perfectly accurate results every time.