Time Calculator
Time difference between two clock times, adding and subtracting hours and minutes, and worked hours minus breaks — as HH:MM and decimal hours.
How to use
- Choose a mode at the top — time difference, add or subtract, or work hours.
- Time difference: enter a start and an end time to get the span as HH:MM and decimal hours.
- When the end time is earlier than the start time, the span is counted into the next day.
- Work hours: add a start time, an end time and a break in minutes to get the hours actually worked.
FAQ
Can it handle overnight shifts?
Yes. If the end time is earlier than the start time, 24 hours are added and the span runs into the next day.
What are decimal hours for?
They turn HH:MM into a decimal number of hours — 7 hours 30 minutes is 7.50 hours, ready for payroll.
How do I subtract a break?
In work-hours mode, enter the minutes you did not actually work; they are taken off the total.
Is it accurate to the minute?
Yes. Everything is computed in minutes and shown back as HH:MM.
How do I turn minutes into decimal hours?
Divide the minutes by 60: 45 minutes is 0.75 hours and 20 minutes is about 0.33 hours. The result shows both ‘Decimal hours’ and ‘Total minutes’.
How do I work out pay from hours?
Multiply the decimal hours from work-hours mode by the hourly rate: 7 h 30 min at 20.00 an hour is 7.5 × 20 = 150.00.
What happens when adding time passes midnight?
In add or subtract mode, if the result lands on the next or previous day, the result also shows how many days it rolled over.
Does it split out night or overtime hours?
No — it gives the total time only. For Korean overtime, night and holiday pay, use the Overtime, Holiday Pay and Severance Calculator.