Days Between Dates

Calculate the number of days, weeks, and months between two dates.

Select dates

Start date

End date

What the tool does

Days Between Dates measures the span between two dates in days, weeks, and months for planning trips, deadlines, and project timelines.

How to use it

Pick a start date and an end date.
View the difference in days and related units.
Adjust dates to explore alternate schedules.

Supported formats

Calendar dates

Privacy & security

This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.

FAQs

Are both dates included?: Most day-count tools report the difference between dates; check the result label for inclusive vs exclusive counting if shown.
Can I count business days only?: This calculator focuses on calendar time unless a business-day mode is explicitly provided.
Is anything stored?: No. Dates stay local.