TinyTools Work Hours & Pay Calculators

Work Hours

Time Card Calculator

Enter your start and end times for each day of the week, subtract lunch and unpaid breaks, and get your total hours, overtime split, and estimated gross pay. Overnight shifts are handled automatically.

This week's shifts
Mon
Tue
Wed
Thu
Fri
Sat
Sun

Times accept most formats: 9, 9:30, 9:30am, 17:45, 0930. Leave a day blank if you didn't work.

Pay & overtime (optional)
Leave blank for hours only.
Assumptions this calculator makes
  • A day whose end time is at or before its start time is treated as an overnight shift (+24h), unless start and end are identical (then it's flagged as an error).
  • Only unpaid breaks are subtracted. Paid breaks remain in worked time.
  • Overtime is applied to the weekly total (and, for California, to each day) using the rule you select. The California 7th-consecutive-day rule is not applied.
  • Gross pay is before tax and other deductions. Use the Paycheck Calculator for take-home pay.

How to fill out the time card

Enter the time you clocked in and out for each day, in whatever format is natural to you. Put your unpaid lunch in the break column in minutes. The calculator updates as you type: each day shows hours and minutes plus decimal hours, and the week rolls up into a total, an overtime split, and — if you enter an hourly rate — estimated gross pay.

The formula

For each day:

worked minutes = (end − start, +24h if overnight) − unpaid break

For the week, with the US federal rule:

regular hours = min(total, 40)
overtime hours = max(0, total − 40)
gross pay = regular × rate + overtime × rate × 1.5

Other rules change the threshold (Ontario uses 44 hours) or add a daily test (California: 1.5× after 8 hours in a day, 2× after 12). See how overtime pay is calculated for the details and the jurisdictions.

Example

You work 8:00 AM–4:30 PM Monday to Thursday with a 30-minute lunch, and 7:00 PM–3:00 AM Friday into Saturday (also 30 minutes). That's 8.0 hours × 4 = 32 hours, plus an 7.5-hour overnight Friday shift = 39.5 hours. At $22/hour with the federal rule, no overtime applies and gross pay is $869.00.

When to use a different tool

Frequently asked questions

How do I calculate hours worked on a time card?
For each day, subtract the start time from the end time, then subtract any unpaid break. Add the daily totals for the week. This calculator does that automatically and also converts the total to decimal hours for payroll (for example 8 hours 30 minutes = 8.50).
How does it handle overnight shifts?
If a day's end time is earlier than its start time, the shift is treated as crossing midnight and 24 hours are added. A 10:00 PM to 6:00 AM shift is counted as 8 hours and marked (overnight).
How is overtime calculated?
Choose an overtime rule. The US federal (FLSA) rule pays 1.5× after 40 hours in the week. California adds daily overtime (1.5× after 8 hours, 2× after 12). Ontario uses a 44-hour weekly threshold. You can also pick Custom and set your own threshold and multiplier. These are calculation settings, not legal advice — your entitlement depends on your job and location.
Are my hours and pay saved anywhere?
No. Everything is calculated in your browser and nothing is sent to a server. If you use the Share button, your entries are placed in the page link so you can send the result to yourself or a colleague.
What if I'm paid for breaks?
Enter only unpaid break minutes (usually lunch). Paid rest breaks stay in your worked hours, so leave them out of the break field.

Further reading: How Time Cards Work