FreeTools Hub / Date Difference Calculator
FREE ONLINE DATE & TIME TOOL

Date Difference Calculator

Count the number of days between two calendar dates.

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CALCULATOR

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Worked example

From 1 March to 11 March is a difference of 10 elapsed days. If you need to count both the start and end dates inclusively, the count may instead be 11 calendar dates.

Assumptions to check

Clarify whether your task needs elapsed days, inclusive calendar days, business days or a time-zone-aware duration.

Important limitation

The result counts the difference between dates. Whether both endpoint dates should be counted depends on the convention used for your particular task.

Quick question

Are both dates included?

The result is the difference between the dates. Whether to count both endpoints depends on the convention of your task.

Use the result as a starting point

Check the inputs and assumptions before relying on the result. FreeTools Hub is designed for general calculations and education; it does not replace professional financial, tax, legal or medical advice.