Date Calculator
Add/subtract dates, find differences, and count workdays (Mon–Fri).
Add / Subtract
Nothing yet — run a calculation to see output here.
Privacy note
Your data is processed in your browser where possible. We do not intentionally store your files or input on our server.
How to use Calculator
- 1Open the Date Calculator tool.
- 2Choose the date you want to start from.
- 3Select whether you want to add or subtract time.
- 4Enter the amount and choose days, weeks, months, or years.
- 5Run the calculation and review the resulting date.
Example use cases
- A small business calculates a customer payment due date 30 days after invoice issue.
- An HR team checks the end date for a probation period.
- A clinic estimates a follow-up date after a visit.
- A delivery team calculates the date after a promised lead time.
FAQ
Can I add weeks to a date?
Yes. Choose the start date, select plus, enter the number of weeks, and calculate.
Can I subtract days from a date?
Yes. Use minus mode when you need to count backward from a deadline or event date.
Is this a money calculator?
The current calculator page is focused on date calculations, not advanced financial math.
Can I compare two dates?
Yes. Use the date difference section to compare two dates and see the gap.
Is it free?
Yes. The ChlatWork Date Calculator is free to use online.