Calendar Addition & Subtraction Engine
Date Calculator
Add or subtract days, weeks, months, and years from any starting date. Features working business days calculation with weekend exclusion.
Gregorian Calendar Math
Business Days Mode
Zero Network Latency
Date Math Configuration
Calculated Target Date
Wednesday, October 14, 2026
WednesdayFrequently Asked Questions About Date Math
Learn how leap years and varying month lengths affect date calculations.
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In 'Business days only' mode, Saturdays and Sundays are skipped during addition or subtraction. For example, adding 5 business days to a Friday yields the following Friday, exactly 1 calendar week later.
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