Date Difference Calculator
Count the days between two dates, plus weeks, months, years and business days. Free online date duration calculator.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
Difference
30 days
In weeks 4 weeks, 2 days
In years/months/days 0 y, 1 m, 0 d
Business days (Mon–Fri) 22
Hours 720
How to use Date Difference Calculator
- 1Enter your numbers or dates.
- 2Results update instantly as you type.
- 3Copy the main result with one click.
Questions
Is Date Difference Calculator free?
Yes. Date Difference Calculator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Date Difference Calculator work on my phone?
Yes. Date Difference Calculator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.
How accurate is it?
Calculations use standard formulas with full floating-point precision. For medical, legal or financial decisions, please confirm with a professional.