Does the count include weekends?

Yes in the total — but a separate breakdown is shown in the chart.

Why are months approximate?

Months differ in length; we use the 30.44-day average.

Yes — but end date must be on or after start date.

It's a calendar estimate; for contracts follow the agreement wording.

Adds one day — useful for leave days or hotel stays.

Compute the difference between two dates in days, weeks, months, and years.

Quick utilityGeneral editable assumptionsGlobal-readyInteractive chart

Last updated: 2026-05-31

This calculator uses generic assumptions. Use advanced mode to override them for a more accurate result.

Source: default

days = (end − start) / 86400 · weeks = days/7 · months ≈ days/30.44

Does the count include weekends?: Yes in the total — but a separate breakdown is shown in the chart.
Why are months approximate?: Months differ in length; we use the 30.44-day average.
Future dates supported?: Yes — but end date must be on or after start date.
Legally precise?: It's a calendar estimate; for contracts follow the agreement wording.
How does include-end-date work?: Adds one day — useful for leave days or hotel stays.

Results are estimates and not professional advice. Verify important decisions with a qualified professional.