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Days Between Dates

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

Start Date

→

End Date

Exclude weekends (business days only)

About Days Between Dates

Days Between Dates is a free unit conversion tool that lets you calculate the exact number of days, weeks, months and years between two dates instantly. Engineers, students, scientists, and everyday users rely on quick conversions for work, study, and daily life. This tool provides accurate results in real time as you type — no need to press a button or wait for a server response.

How to Use

Enter a value Type the number you want to convert into the input field.

Select units Choose the source and target units from the dropdown menus.

Get instant results The converted value appears immediately as you type — no button press needed.

Copy the result Click the Copy button or select the output value to copy it for use elsewhere.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Days Between Dates?

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Real-Time Conversion Results update instantly as you type — no need to press a button. Quickly compare multiple values or find the exact conversion you need.

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High Precision Days Between Dates uses accurate conversion factors from international standards. Results are precise enough for engineering, scientific, and professional use.

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Mobile Ready Fully responsive design works perfectly on phones and tablets. Great for quick conversions when you're shopping, cooking, or traveling.

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All Common Units Covers the most commonly needed unit conversions, including both metric (SI) and imperial systems, so you always find what you're looking for.

Frequently Asked Questions

The calculator counts days between the dates (exclusive of start, inclusive of end — standard "elapsed days" counting). So from Jan 1 to Jan 2 = 1 day.

Business days in this tool are Monday–Friday only. Public holidays are not excluded as they vary by country and region.

Yes, you can enter dates in any order. If start date is after end date, the result will show a negative value indicating the start is after the end.