Worked Hours Calculator
How many hours did you work? Enter your clock-in time, clock-out time and lunch break and this calculator counts the hours worked per day, week, month and year. If you enter an hourly value, it also shows what those hours are worth, gross. Shifts that end the next day are counted automatically.
Enter the clock-in and clock-out times and the unpaid break. The monthly hours use the 52 weeks of the year spread over 12 months; shifts that end the next day are counted automatically.
Hours and value per period
| Period | Hours |
|---|---|
| Per day | 8 h |
| Per week (5 days) | 40 h |
| Per month | 173.33 h |
| Per year | 2,080 h |
Enter the hourly value to see what these hours are worth (gross).
Educational estimate, not financial advice. It counts the hours worked and their gross value; it does not include income tax, social security or overtime uplifts.
How the daily hours are counted
The sum is simple: daily hours = clock-out time minus clock-in time, minus the unpaid break. For example, 9:00 to 18:00 with a one-hour lunch is 8 hours of work. The lunch break does not count as working time, so it is taken off the total.
Shifts that roll over midnight
If the clock-out time is at or before the clock-in time, the calculator assumes the shift ends the next day and adds 24 hours. A shift from 22:00 to 06:00 with a 30-minute break counts 7h30 of work, with no manual maths.
From the week to the year
From the daily hours and the number of days you work each week, the calculator works out the hours per week, month and year. The monthly hours use the 52 weeks of the year spread over 12 months (the same rule the Labour Code uses for the hourly value), not a flat 4 weeks, to give a faithful annual average.
What your hours are worth
If you enter an hourly value, the calculator multiplies it by the hours in each period and shows the gross value per day, week and month. At 8 hours a day, 5 days a week and €7.50 an hour, the month is about €1,300 gross, the same figure you reach with the hourly-rate calculator.
These are gross amounts
The hours counted are working time and the value is gross, before withholding income tax (IRS) and the employee’s 11% social security. For the net value use the net-salary calculator. Hours beyond the legal limit (8 a day, 40 a week) are overtime and are paid with uplifts: use the overtime calculator.
Worked example
Take a day from 9:00 to 18:00 with a one-hour lunch, 5 days a week, at €7.50 an hour. The daily hours are 18:00 − 9:00 − 1h = 8 hours. That is 8 × 5 = 40 hours a week; 40 × 52 ÷ 12 = 173.33 hours a month; 40 × 52 = 2,080 hours a year. In gross value, the day is worth 8 × 7.50 = €60, the week €300 and the month about €1,300.
Frequently asked questions
How do you calculate the hours worked in a day?
Does the lunch break count as working time?
How are night shifts that end the next day counted?
Why are the monthly hours not the weekly hours times 4?
Is the value of the hours gross or net?
Can I use it to log overtime?
Related calculators & reading
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Sources
- Código do Trabalho (Lei n.º 7/2009), art. 203.º (limites do período normal de trabalho) — Diário da República
- Código do Trabalho (Lei n.º 7/2009), art. 271.º (valor da retribuição horária) — Diário da República
- Todos Contam: Portal de educação financeira — Banco de Portugal
Author: Thorben Rasmus Idel · Reviewed by: Nahar Geva · Last reviewed: 2026-06-27