makeatimerDates
Date difference calculator
Find the number of calendar days, months, and years between two dates.
Dates
Business days calculator
Count working days using your own working week and excluded dates.
Inputs
Result
Start included; end excluded.
How to use business days calculator
Choose the weekdays that count as working days, then enter any holidays or other excluded dates. The tool works for a standard Monday–Friday week or a custom schedule.
Worked example
September 28 to October 5, 2026 has 5 Monday–Friday working days with the end excluded. Excluding September 30 reduces the count to 4.
What the result means
No country holiday database is maintained. The start date counts if eligible; choose whether to count the end date.
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