Calculate exactly how many hours and minutes you are working. Subtract lunch breaks, apply payroll rounding, and calculate gross pay instantly.
Check the days you worked and select your Start/End/Break values. The weekly total aggregates automatically.
| Day | Start Time | End Time | Break (m) | Total Worked |
|---|
If you're asking yourself "how many hours am I working?", you are not alone. Tracking shift hours, deducting breaks, and logging work sessions are crucial activities for anyone paid hourly, filing timesheets, or invoicing clients.
Our interactive How Many Hours Am I Working Calculator does the hard calculations for you. By entering your daily start and end times, along with unpaid breaks, you get your total duration and its decimal equivalent immediately. This prevents keying errors, simplifies your invoicing, and ensures you get paid for every minute on the clock.
Calculating your work hours manually follows a simple arithmetic sequence, though converting standard minutes to decimals can be tricky. Here is the formula:
To calculate total decimal hours worked between a Start Time (e.g., cell A1 = 8:00 AM) and End Time (e.g., cell B1 = 4:30 PM) while deducting a lunch break (e.g., cell C1 = 30 minutes) in Excel or Google Sheets, use this formula:
=MOD(B1-A1,1)*24 - (C1/60)
Why the MOD function? Using MOD(B1-A1,1) ensures that if your shift crosses midnight (e.g., starting at 10 PM and leaving at 6 AM), Excel will still calculate the overnight hours worked perfectly without errors.
According to the **U.S. Department of Labor (DOL)** under the **Fair Labor Standards Act (FLSA)**, rest breaks of short duration (usually 5 to 20 minutes) must be counted as paid hours worked. However, bona fide meal periods (typically lasting 30 minutes or longer) do not have to be paid, provided the employee is completely relieved from duty for the purpose of eating regular meals.
Most modern payroll and accounting systems (like ADP, QuickBooks, Gusto, and FreshBooks) cannot calculate wages using hours and minutes directly. For example, if you work 7 hours and 45 minutes at a rate of $20.00/hour, you cannot simply multiply 7:45 × 20 in a spreadsheet. You must first convert 45 minutes into its decimal value (45 ÷ 60 = 0.75), yielding 7.75 decimal hours. Then, the math is simple: 7.75 × $20 = $155.00.
Our tool makes this conversion automatic and handles standard rounding requirements.
| Start Time | End Time | Unpaid Break | Total Hours worked | Decimal Hours |
|---|---|---|---|---|
| 9:00 AM | 5:00 PM | 30 min | 7h 30m | 7.50 |
| 8:00 AM | 5:00 PM | 1 hour | 8h 00m | 8.00 |
| 8:30 AM | 4:30 PM | 30 min | 7h 30m | 7.50 |
| 7:00 AM | 3:30 PM | 30 min | 8h 00m | 8.00 |
| 9:00 AM | 6:00 PM | 45 min | 8h 15m | 8.25 |
| 10:00 PM | 6:00 AM | None | 8h 00m | 8.00 |
Quick answers to common questions about calculating work hours, shift lengths, and unpaid breaks.
To calculate your net hours worked, subtract your start time from your end time, then deduct any unpaid lunch breaks. For example, a shift from 9:00 AM to 5:30 PM represents a total elapsed duration of 8.5 hours. Deducting a 30-minute unpaid lunch break (0.50 decimal hours) leaves exactly 8.00 decimal hours worked.
A 30-minute break represents exactly 0.50 decimal hours. It is calculated by dividing 30 minutes by 60 (30 ÷ 60 = 0.50). Similarly, a 15-minute rest break represents 0.25 hours, and a 45-minute lunch break represents 0.75 decimal hours.
Under United States federal law (FLSA), standard weekly overtime is calculated as any hours worked over 40 hours in a single 168-hour workweek. Overtime hours must be compensated at a rate not less than 1.5× the regular hourly wage rate. Some states (like California) enforce strict daily overtime, where hours worked beyond 8 in a single workday are also paid at 1.5× (and over 12 hours at 2.0×).
When a work shift crosses midnight, add 24 hours to your end time before subtracting your start time. For example, if you start work at 10:00 PM (22:00) and finish at 6:00 AM (06:00) the following morning, the elapsed time is (6 + 24) − 22 = 8.00 hours. Our digital calculator automatically detects overnight shifts and applies this rule instantly.
All the time conversion tools you need, completely free.
Convert hours and minutes to decimal format for payroll and timesheets.
Convert decimal hours back to hours and minutes format (HH:MM).
Convert any decimal time like 7.75 back to hours and minutes instantly.
Add multiple time entries and get total decimal hours for the week.
Calculate gross pay by multiplying decimal hours by your hourly rate.
Full reference chart — every minute from 1 to 60 in decimal format.
Calculate total hours worked between start/end times with break deduction.
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