Date & Time

Date Difference Calculator — Days, Weeks, Months

Calculate the span between two dates in days, weeks, months, hours, and weekdays (Mon–Fri). Parsing runs in the browser for scheduling, event length checks, and release-gap tracking.

DateDurationCalculator

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Quick actions

Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Measure how long an event lasts
  • Count the gap between two milestones
  • Tally calendar days between release and acceptance

How to use

  1. Choose a start date and an end date
  2. Click Calculate
  3. Review total days and finer-grained results

Example input and output

Input

Start: 2026-03-01
End: 2026-03-03

Output

2 days

FAQ

Can I include hours and minutes?

This calculator uses calendar dates. For hour-level spans, enter dates that reflect the intended day boundaries; finer time math is available in related time tools.

What if the end date is before the start?

The tool uses the absolute difference. Swap the dates if your workflow needs a directed interval.

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