Day counter
Add or subtract days from a date (for example 90 days), or find how many days lie between two dates. Results include the Thai BE date and the weekday.
Typical uses in Thailand
- Due dates for leases, payments and probation periods (often 119 days).
- 30-, 60- or 90-day periods for visas and reporting — always check the current rules with the authorities.
- Counting leave days or days until an important date.
Enter a negative number to count backwards. Counting both the first and last day adds one; laws and contracts may count differently.
FAQ
What date is 90 days from today?
Pick today’s date and enter 90 in “Date + days”; you get the date and its weekday, also in Thai format.
Do I count the first day?
Usual date arithmetic does not; the tool shows both counts, so use the one your document asks for.
Are leap years handled?
Yes, February 29 is counted automatically.
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