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Date Calculator

Calculate the number of days between two dates or add/subtract days from a date.

Days Between Two Dates

Calendar Days

30

Business Days

21

Weeks

4w 2d

Months

1.0

Add / Subtract Days

Result

Sunday, May 10, 2026

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Working with Dates

Date calculations are common in project management, contract deadlines, legal timelines, and everyday planning. This calculator handles calendar days, business days (excluding weekends), and can add or subtract any number of days from a given date. All calculations correctly handle month boundaries, year boundaries, and leap years.

Common Use Cases

  • Project deadlines: Calculate business days between milestones.
  • Contract terms: Find exact dates for "30 days from signing" clauses.
  • Travel planning: Count days for trip duration and visa requirements.
  • Age calculation: Find exact number of days between birthdate and today.

Frequently Asked Questions