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Essential for planning project deadlines, scheduling events, calculating payroll periods, managing leave, tracking tax filing dates, and navigating any task requiring accurate date arithmetic. All week numbering adheres to the ISO 8601 standard for global consistency.

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Use this calculator to make informed financial decisions and optimize your planning.

Count Days Between Two Dates
Add Calendar Days to a Date
Add Workdays to a Date
Find Weekday from Date
Find Week Number from Date
Why Use This Calculator?

Whether you're a project manager, HR professional, student, or someone planning an event, our Date & Week Calculator Suite simplifies complex date-related tasks. Get accurate results instantly for:

  • Project Planning: Estimate durations and set realistic deadlines.
  • Event Scheduling: Find the perfect future date, avoiding weekends if needed.
  • Payroll & HR: Calculate workdays for salary processing or leave management.
  • Academic Needs: Track assignment due dates or semester lengths.
  • Personal Organization: Plan holidays, appointments, or countdowns to important events.
Common Use Cases
Tax Filing

Calculate ITR filing deadlines and advance tax due dates accurately.

Payroll Management

Determine salary cycles, workdays, and leave encashment periods.

Compliance Tracking

Track regulatory deadlines and financial reporting periods effectively.

Project Management

Efficiently plan sprints, track milestones, and manage project timelines.