Work Hours
Calculator
Calculate hours worked between two times, including breaks
Daily hours
Weekly timesheet
Enter start, end and break for each day — hours update automatically
| Day | Start | End | Break (min) | Hours |
|---|---|---|---|---|
| Monday | — | |||
| Tuesday | — | |||
| Wednesday | — | |||
| Thursday | — | |||
| Friday | — | |||
| Saturday | — | |||
| Sunday | — | |||
| Weekly total | 0:00 | |||
How does a work hours calculator work?
A work hours calculator measures the time between a start and end clock-in, then subtracts any unpaid breaks to give you the hours actually worked. Enter your shift start time, finish time, and lunch break duration — the tool instantly shows your total in both decimal format (used by most payroll systems) and HH:MM format (hours and minutes).
Decimal hours are how employers and accounting software record time. Seven and a half hours is written as 7.50, not 7:30. To convert minutes to decimal, divide by 60 — so 45 minutes equals 0.75 hours. Clockr handles this conversion automatically so you can copy the figure straight into a timesheet or invoice.
The weekly timesheet below lets you log each day separately and see a running total for the week. Add your hourly rate to estimate gross pay for a single shift or the full week. Night shifts that cross midnight are supported — if your end time is earlier than your start time, the calculator assumes you worked into the next day.
Frequently asked questions
How do I calculate hours worked including a lunch break?
Subtract your unpaid break from the total shift length. For example, if you work 09:00 to 17:00 that is 8 hours gross. A 60-minute unpaid lunch break leaves 7 hours paid. Enter your start time, end time, and break duration in the calculator above — the "After break deduction" figure is your paid hours.
How many hours is a standard working week?
In the UK and most of Europe, a full-time standard week is 35 to 40 hours, typically spread across five days. In the United States, 40 hours per week is the most common full-time benchmark and the threshold at which overtime rules often apply. Part-time contracts vary — use the weekly timesheet above to total your actual hours regardless of your contracted schedule.
How do I convert minutes to decimal hours for payroll?
Divide the number of minutes by 60. Fifteen minutes is 0.25 hours, thirty minutes is 0.50, and forty-five minutes is 0.75. Payroll systems almost always use two decimal places — so 7 hours 30 minutes becomes 7.50, not 7.3. Clockr displays both formats so you can verify the decimal figure before submitting your timesheet.
What is overtime and how is it calculated?
Overtime is time worked beyond your contracted hours, usually paid at a higher rate — commonly 1.5× (time and a half) or 2× (double time) depending on your contract and local law. In the US, non-exempt employees must receive overtime for hours over 40 in a workweek under federal law. In the UK, there is no statutory right to overtime pay, but many contracts specify enhanced rates. Calculate your total weekly hours here first, then apply your employer's overtime rules to any hours above your threshold.
How do I calculate my weekly pay from an hourly rate?
Multiply your total hours worked by your hourly rate. If you worked 37.5 hours at £12 per hour, your gross weekly pay is £450. Enter your hours in the weekly timesheet and your rate in the hourly rate field above — Clockr multiplies them automatically and shows estimated daily and weekly pay. Remember this is gross pay before tax and deductions.
What is the difference between gross and net pay?
Gross pay is your total earnings before any deductions — the figure you get from hours × rate. Net pay is what actually lands in your bank account after income tax, National Insurance, pension contributions, student loan repayments, and other withholdings. This calculator shows estimated gross pay only. Your payslip will show the net amount after your employer applies all deductions.
How many working hours are in a year?
A full-time employee working 40 hours per week for 52 weeks would clock 2,080 hours annually. Accounting for roughly 20 to 25 days of annual leave (160 to 200 hours), the typical net working year is around 1,880 to 1,920 hours. In the UK, 37.5 hours per week over 46 working weeks (after holiday) gives approximately 1,725 hours per year.
How do I calculate hours worked across midnight (night shift)?
When a shift crosses midnight, the end time appears earlier than the start time on a clock — for example, 22:00 to 06:00. Clockr detects this automatically and adds 24 hours to the end time, giving 8 hours worked. Enter 22:00 as start and 06:00 as end, subtract your break, and the calculator handles the overnight maths. The same logic applies to each row in the weekly timesheet.