Date Calculator — Add Days, Weeks & Months
Add or subtract days, weeks, months, and years from any date. Find future or past dates instantly for planning and scheduling.
RESULT DATE
Thursday, December 10, 2026
Thursday
💡 Date Arithmetic Made Simple
Enter a starting date, choose add or subtract, and specify the number of days, weeks, months, and/or years to adjust. The calculator handles month-length variations (28–31 days), leap years, and all date boundary edge cases automatically.
Common uses: 'What date is 90 days from today?' for contract deadlines. 'What was the date 6 months ago?' for financial reporting periods. 'What date is 2 weeks from Friday?' for scheduling.
Today + 30 days = the exact future date with day-of-week shown. Month additions respect month lengths — adding 1 month to January 31 gives February 28 (or 29 in leap years).