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ToolBoxGenie

Hours Calculator

Calculators · Added 15 August 2026

Add up a week of worked hours from clock-in and clock-out times, with unpaid breaks deducted and overtime split out. Overnight shifts are handled correctly, and the total is given both as hours and minutes and as decimal hours — because 7 hours 45 minutes is 7.75 for payroll, not 7.45.

Your week — leave a day blank if you did not work it
DayStartEndBreak (min)Hours
Monday7h 30m
Tuesday7h 30m
Wednesday7h 30m
Thursday7h 30m
Friday7h 30m
Saturday—
Sunday—
h/wk

Leave blank for no overtime split

×

Adds a pay estimate

Result

Total hours this week

37h 30m

37.50 decimal hours across 5 days

Total as hours and minutes
37h 30m
Total as decimal hours (for payroll)
37.50

Decimal hours are what payroll systems want, and they are not the minutes written after a dot: 7 hours 45 minutes is 7.75 hours, not 7.45. A shift whose end time is earlier than its start is treated as running past midnight. Pay is gross — before tax, national insurance, pension or any other deduction — and overtime is applied to the weekly total, which is the common arrangement but not universal. Check your own contract and local employment law.

How to use the hours calculator

  1. 1Enter start and end times for each day you worked, leaving days off blank.
  2. 2Add any unpaid break in minutes for each day.
  3. 3Set the weekly overtime threshold and multiplier, or clear the threshold for no split.
  4. 4Optionally add an hourly rate for a gross pay estimate.
  5. 5Read the week total in both hours-and-minutes and decimal form.

Examples

A standard week

Input
Five days, 09:00 to 17:00, 30-minute break
Result
37h 30m · 37.50 decimal hours

Seven and a half paid hours a day.

A week with overtime

Input
Four days 09:00–17:00 plus one 09:00–21:00, 30-minute breaks
Result
41h 30m — 40h regular, 1h 30m overtime

Overtime is split against the weekly threshold you set.

An overnight shift

Input
22:00 to 06:00 with a 30-minute break
Result
7h 30m

An end time earlier than the start is treated as crossing midnight, not as a negative.

About the hours calculator

The two errors that dominate timesheets

Almost every timesheet mistake falls into one of two categories. The first is decimal confusion: treating the minutes as decimal digits, so 8 hours 30 minutes becomes 8.30 instead of 8.5. On a weekly timesheet this quietly loses around twelve minutes per affected day, and because the numbers look plausible it can persist for months without anyone noticing.

The second is midnight. Any calculation that simply subtracts start from end produces a negative for a night shift, and the usual quick fix — adding 24 when the result is negative — is correct for shifts under a day and wrong for anything longer. Night workers, hospitality staff and anyone on a rota crossing midnight hit this constantly.

Both are handled here, but they are worth knowing about independently, because most people meet them in a spreadsheet rather than in a dedicated tool. A spreadsheet storing times as fractions of a day needs an explicit multiplication by 24 before an hourly rate is applied, and a hidden ×24 in an unlabelled column is exactly the kind of formula that gets lost when a template is copied.

Breaks, and why the rules matter

Whether a break is paid changes the total materially — a thirty-minute unpaid lunch across five days is two and a half hours a week, which is over six percent of a full-time schedule. This calculator treats the break minutes you enter as unpaid and deducts them, because that is the common arrangement, but it is not universal.

Rest break entitlements themselves are set by law and vary widely. Many jurisdictions mandate a break after a certain number of continuous hours, some require them to be paid, and rules often differ for young workers or specific industries. Nothing here encodes any of that, and it should not be read as describing what you are entitled to.

The practical advice for anyone keeping their own record is to log the actual clock times rather than a computed total. Raw start, end and break times can be checked later against a rota, a door log or a memory of the day. A duration typed in as a single number cannot be verified against anything once the week has passed, which makes it worth very little if a dispute ever arises.

What a timesheet total is good for

The immediate use is payroll, and for that the decimal figure is what matters, since it is the number that gets multiplied by a rate. Rounding conventions vary between employers — some round each day to the nearest quarter hour, some to the nearest minute, some not at all — and consistent rounding in one direction over a long period adds up, so it is worth knowing which your employer applies.

For contractors and freelancers the same total serves as invoice backup, and here keeping the per-day detail matters more than the weekly figure. An invoice line that can be traced to specific days and times is far easier to defend than a single number for the week.

For anyone tracking their own hours to understand a workload, the weekly total is the interesting output rather than the pay. Weeks that consistently exceed a contracted figure are a fact worth having written down, and a timesheet built from actual clock times is a much more reliable record of that than an impression at the end of the month.

Frequently asked questions

Why is 7 hours 45 minutes shown as 7.75 rather than 7.45?
Because decimal hours express minutes as a fraction of sixty, not as digits after a point. Forty-five minutes is three quarters of an hour, so 0.75. Writing 7.45 treats the minutes as if there were a hundred in an hour, and multiplying that by an hourly rate underpays by about twenty minutes a day. This is the most common timesheet error there is, which is why both formats are shown side by side.
How are overnight shifts handled?
If the end time is earlier than or equal to the start time, the shift is treated as running past midnight and the hours are counted through to the following day. So 22:00 to 06:00 is eight hours. The row is labelled 'overnight' so you can see the assumption being made. A shift with identical start and end times is treated as a full 24 hours.
Is the overtime calculation correct for my country?
It applies whatever weekly threshold and multiplier you enter, which covers the most common arrangement — time and a half after forty hours a week. But overtime rules vary enormously: some jurisdictions calculate it daily rather than weekly, some have different multipliers for different bands, weekends or public holidays, and many employment contracts define their own terms. Set the fields to match your actual arrangement, and check your contract or local employment law rather than assuming the defaults apply to you.
Does the pay figure account for tax?
No — it is gross pay, before income tax, national insurance or social security, pension contributions and any other deduction. Take-home pay will be meaningfully lower. The salary calculator on this site covers deductions in more detail for salaried pay.
How is this different from the time calculator?
The time calculator works with durations in the abstract — adding them, subtracting them, finding the gap between two times. This one is specifically a weekly timesheet: seven days of clock-in and clock-out, break deduction, an overtime split and a pay estimate. Use that one for a single duration, this one for a week of work.

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