Date Calculator
Add or subtract days from a date, or find the number of days between two dates.
Resulting date
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How this is calculated
Add/subtract mode adds a signed number of days to your start date. Days-between mode counts the exact number of calendar days separating two dates.
Frequently asked questions
Does this exclude weekends or holidays?
No — this is pure calendar-day arithmetic. Use the Working Days Calculator instead if you need to exclude weekends and Thai public holidays.