Date Duration Calculator

Click the input field below to select a date range. The duration will be calculated automatically in full days, weeks, and years.

Days: 0 days

Weeks: 0 weeks

Years: 0 years

About this tool

Measure the elapsed duration between two calendar dates. The result is shown as total days, weeks, and years, which makes the calculator useful for project timelines, subscription periods, event planning, and quick historical comparisons. Selecting a new range updates the summary without requiring a separate calculation step.

How to use it

  1. Open the date field and select the beginning of the range.
  2. Select the ending date.
  3. Read the duration expressed in days, weeks, and years.

Good to know: Calendar duration and billable working time are different; use a working-days calculator when weekends and holidays must be excluded.