Time Card Calculator

Quick Answer: How Work Hours Are Calculated

Fast example: Clock in 9:00 AM, out 5:30 PM, 30-minute lunch = 8.0 hours worked. Five such days = 40 hours. At $20/h with no overtime, weekly pay = $800. At 45 hours, the extra 5 hours at 1.5× = $150 extra, total $950.

To calculate work hours: subtract your clock-in time from your clock-out time, then subtract any unpaid break time. Repeat for each day and add the results.

How to Use This Time Card Calculator

1. Set your week: Choose how many days you work (5, 6, or 7) and which day your week starts. Most office workers use 5 days starting Monday. Retail, hospitality, and factory workers often use 6 or 7.
2. Enter daily times: For each working day, type your clock-in and clock-out time. Leave a day blank if you did not work that day. The calculator skips blank rows.
3. Add break minutes: Enter only your unpaid break time in minutes. A paid tea break does not get deducted — only lunch or other breaks where you are not being compensated.
4. Set pay and OT rule: Enter your hourly rate, choose an overtime rule (none, daily over 8 hours, or weekly over 40 hours), and set the OT multiplier. The default is 1.5× (time and a half), which is the US federal standard and common elsewhere.
5. Calculate: Click "Calculate Hours & Pay" to see your weekly total, regular hours, overtime hours, and gross pay with a day-by-day breakdown.

Overnight shift? Check the Night box on any row where your shift starts before midnight and ends after it — for example, 10:00 PM to 6:00 AM.

How to Calculate Weekly Work Hours

A time card tracks the start and end of each shift, along with any unpaid break time. The worked hours for a single day are:

Add each day's worked hours to get the weekly total. If you work Monday through Friday at 9:00 AM to 5:30 PM with a 30-minute lunch each day:

• Each day: 8h 30m shift − 30m break = 8.0 hours worked
• Weekly total: 5 × 8.0 = 40.0 hours

For a 6-day week, use the Days in Week toggle to add a Saturday row. Factory workers in India routinely work 6-day weeks under the Factories Act, where any hour beyond 9 per day or 48 per week counts as overtime at double the regular rate.

Times are entered using the browser's native time picker — a clock interface on mobile, an input box on desktop. Both 12-hour (AM/PM) and 24-hour formats are accepted depending on your device and browser settings.

How Overtime Is Calculated

Overtime rules differ significantly by country and, in the US, by state. The two most common systems are:

Pay formula:

• Regular Pay = Regular Hours × Hourly Rate
• Overtime Pay = Overtime Hours × Hourly Rate × OT Multiplier
• Total Weekly Pay = Regular Pay + Overtime Pay

Example — 45 hours worked at $20/h, weekly rule, 1.5× OT:

• Regular: 40 × $20 = $800
• Overtime: 5 × $20 × 1.5 = $150
• Weekly gross: $950

Under the daily rule with the same schedule — say 9 hours each day Mon–Fri — you get 1 OT hour per day × 5 days = 5 OT hours, producing the same result. But if you work irregular days (say, 12 hours Monday and 6 hours the rest), the two rules give very different numbers.

Overtime Rules by Country

The threshold at which hours become overtime — and how much extra you are owed — varies widely. Use the table below to set the correct rule in the calculator.

This calculator uses a single OT multiplier for the whole week. For daily variation (e.g. 2× on Sundays in Poland), calculate Sunday hours separately and add them manually.

Overnight Shifts and Break Deductions

Overnight Shifts

If your shift crosses midnight — say 10:00 PM to 6:00 AM — the clock-out time (06:00) looks earlier than the clock-in time (22:00). Without correction, the calculator would subtract the wrong way and give a nonsense result.

Fix: check the Night box for that row. The calculator adds 24 hours to the clock-out time and correctly computes 8 hours worked. The checkbox also activates automatically when it detects a clock-out that is earlier than the clock-in, so most overnight workers will not need to tick it manually.

Example: Security guard, 21:30 to 05:30, 30-minute break. Check Night. Shift = 8h 0m. Less break = 7h 30m worked.

Break Deductions — What Counts

Only enter breaks where you are not being paid. Common entries:

• 30 min — standard half-hour lunch (most common)
• 60 min — one-hour lunch, common in India and the UK
• 0 min — short shifts (4 hours or less) typically have no unpaid break
• 45 min — typical in Saudi Arabia and Gulf region workplaces

If your employer pays you during a 15-minute tea break, do not enter those 15 minutes. Paid break time is part of your paid shift — deducting it would undercount your hours and reduce your calculated pay.

Real-World Examples

Example 1 — IT Tester, Bengaluru (India, 6-day week)

Priya works Monday to Saturday at a software firm. Her hours: 9:30 AM to 7:00 PM, with a 60-minute lunch break, Monday through Friday. Saturday: 9:30 AM to 1:30 PM, no break.

• Monday–Friday: 9h 30m shift − 60m break = 8h 30m each day → 5 × 8.5 = 42.5 h
• Saturday: 4h 0m, no break
• Weekly total: 46.5 hours
• Under the Factories Act: OT = 46.5 − 48 = negative → actually no OT this week (under 48h/week threshold)
• If the daily threshold of 9h applies, Monday–Friday each exceed 8h by 30 min → 5 × 0.5 = 2.5 OT hours at 2×

India's Factories Act is ambiguous in practice — most IT firms use contractual terms rather than the Act directly. Use the daily rule (Daily >8h, 2.0×) as a conservative estimate.

Example 2 — Warehouse Worker, Ohio, USA

James clocks in at 7:00 AM and out at 4:00 PM, Monday through Friday, with a 30-minute lunch each day. One week he is asked to work Saturday 8:00 AM to 12:00 PM.

• Mon–Fri: 9h − 0.5h break = 8.5h each day → 42.5 hours
• Saturday: 4.0 hours
• Weekly total: 46.5 hours
• Weekly OT (FLSA): 46.5 − 40 = 6.5 OT hours
• At $18/h: Regular pay = 40 × $18 = $720. OT pay = 6.5 × $18 × 1.5 = $175.50
• Total gross: $895.50

Example 3 — Night Shift Nurse, UK

Aisha works 12-hour night shifts: 19:30 to 07:30, with a 30-minute break, three days a week (Thursday, Friday, Saturday).

• Each shift: 12h 0m − 30m break = 11.5 hours worked
• Weekly total: 3 × 11.5 = 34.5 hours — no OT
• Set "Night" checkbox for each of the three rows
• UK note: night shifts often carry a shift allowance (e.g. +20% on top of base rate). Enter that rate in the Hourly Rate field to get an accurate gross figure

Common Mistakes When Filling in a Timesheet

Most payroll disputes trace back to one of these errors — on the employee's side or the employer's:

1. Deducting paid breaks as unpaid. If your employer pays you during a 15-minute coffee break, that is paid time. Deducting it means you undercount your hours and lose pay. Only subtract breaks where you genuinely clock out and are not compensated.
2. Forgetting the overnight checkbox. If clock-out is before clock-in (e.g. 23:00 in, 07:00 out), the calculator automatically detects this. But if you are entering times manually on a paper timesheet, it is easy to subtract wrong and get a negative result or a 16-hour shift by mistake.
3. Using the wrong overtime rule. US federal (weekly 40h) and California (daily 8h) give the same total OT hours if you work the same hours every day. They diverge the moment your schedule is uneven. Using the wrong rule can overstate or understate overtime by several hours.
4. Confusing gross pay with net (take-home) pay. This calculator shows gross pay — before income tax, provident fund, ESI, National Insurance, or Social Security deductions. Your actual bank deposit will be lower. Use the Salary In-Hand Calculator for a net estimate.
5. Not logging partial days. If you left at 3:00 PM on a Friday, enter 3:00 PM as your clock-out. Many workers skip partial days on the assumption their employer "knows" — this creates discrepancies when payroll is audited.
6. Including holiday pay or sick pay in hours worked. Time off on public holidays is usually paid separately and should not be included as "worked hours" in a standard timesheet, unless your contract specifies otherwise.

Who Uses a Time Card Calculator?

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