Date Calculator
Add or subtract days, weeks, months, or years. Month-end dates clamp to the last valid day.
Sunday, October 25, 2026 +10 days = Wednesday, November 4, 2026 (Wednesday).
How it works
Days and weeks add to the day count. Months and years keep the day-of-month when possible; otherwise clamp (Jan 31 + 1 month → Feb 28/29).
Business-day mode skips Saturdays, Sundays, and US federal holidays (observed).
FAQ
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