Date & time · Time math
Working hours until a date.
Set a start and an end, your work day hours and your working weekdays, and get the working time between them in h:mm and decimal hours.
Inputs
Result
Enter your numbers.
How working hours are counted
For each calendar day from the start to the end date, the tool keeps only your chosen working weekdays that are not on your days-off list. On each of those days it counts the overlap between your work day (for example 09:00 to 17:00) and the part of the day that falls inside the start and end times. The overlaps are added up.
Worked example. From Thursday 8 October 2026 at 14:00 to Wednesday 14 October at 11:00, with a 09:00 to 17:00 work day, Monday to Friday: Thursday counts 3 hours (14:00 to 17:00), Friday 8, Monday 12 October 8, Tuesday 8 and Wednesday 2 (09:00 to 11:00), 29 hours in all. If 12 October is a day off, the total is 21:00 (21.00 h) over 4 working days.
Limits. Work days cannot run past midnight, and lunch or other breaks are not subtracted, so set your work day hours net of breaks or use a start and end that split the day. Time zones and daylight saving changes are ignored. For counting whole days instead of hours see the business days calculator.
Frequently asked questions
How do I count working hours between two dates?
Count only the hours that fall inside your work day on working weekdays. Partial first and last days count just the overlap with the start and end times.
How do I exclude holidays?
Type the dates in the days-off box as YYYY-MM-DD, separated by commas. Holidays vary by region, so you enter your own.
Does it subtract lunch breaks?
No. Set a work day that already excludes breaks, or split the range around them.
Can I use a six-day week or a night shift?
You can tick any weekdays. A work day that runs past midnight is not supported, so night shifts are better handled with the elapsed time calculator.
Sources
Checked
Runs entirely in your browser. Nothing you type is sent or stored.
Arithmetic only
Arithmetic only. It does not know your holidays, contract terms or local rules, so verify them before using a figure for planning or payroll.