About the Date Difference Calculator
Count the days, weeks, months and years between two dates. This tool is free, works in your browser and needs no sign-up.
How to use the Date Difference Calculator
Pick a start date and an end date.
Formula used
The tool counts the full days between the dates and then splits them into years, months and days.
Example
From 1 January 2026 to 31 December 2026 is 364 days.
Frequently asked questions
Is the Date Difference Calculator free to use?
Yes. It is completely free and you can use it as many times as you like.
How accurate is the Date Difference Calculator?
The calculator uses standard formulas, so the maths is exact. Real life results can differ because of fees, taxes, rounding or personal factors, so treat the answer as an estimate.
Do you store the numbers I enter?
No. All calculations run in your browser. The values you type are not sent to our server.
Disclaimer: results are estimates for information only. They are not financial, medical or professional advice.