Date Difference Calculator
To find the difference between two dates, enter both: ClickZM shows the total days, the span in years, months and days, weeks, weekdays and hours, with an option to include the end date.
- Free
- No signup
- Runs in your browser
How to use Date Difference Calculator
- 1Enter your values in the fields; defaults show a worked example.
- 2Pick the units or options that apply to you.
- 3Read the result, which updates instantly as you type.
- 4Check the formula note under the result to see exactly how it was worked out.
Date Difference Calculator: questions people ask
How many days are between two dates?
Subtract the earlier date from the later one in days; from 1 January to 31 December in a common year is 364 days, or 365 counting both ends.
What does 'include end date' do?
It adds one day, for counts where both the first and last day are part of the period, such as hotel nights versus days.
Is my data uploaded when I use the Date Difference Calculator?
No. The Date Difference Calculator runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the Date Difference Calculator work on iPhone, Android and Mac?
Yes. The Date Difference Calculator runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the Date Difference Calculator free?
Yes. The Date Difference Calculator is free with no signup, no watermark and no daily limit.