Date Calculator
Add or subtract days, weeks, months and years to any date
Add or Subtract from a Date
// Quick Date Jumps from Today
// 30 Days vs 1 Month
Adding "1 month" moves to the same day next month. Adding "30 days" may land on a different date — months have 28–31 days.
// End of Month
Adding months to 31 January → 28/29 February, not 31 February. The result is clamped to the last valid day of the target month.
// Business Use
Common deadlines: 30 days notice, 90-day probation, 6-month review. Use this calculator to find the exact calendar date.
// Leap Year
Adding 1 year to 29 February → 28 February in non-leap years. Adding 4 years → 29 February again.