Date Difference Calculator
Calculate days, weeks, months and years between two dates.
Loading tool...
How to use the Date Difference Calculator
- Open the Date Difference Calculator.
- Enter your input in the fields provided - results update as you type where practical.
- Use Copy or Download to take the result with you, or Reset to start again.
How it works
Subtracts the two dates at UTC midnight to avoid daylight-saving drift, then breaks the total days into weeks and approximate years/months.
Privacy note: this tool runs locally in your browser. Your input is not uploaded, stored in analytics, or placed in the page URL.
Frequently asked questions
Is the Date Difference Calculator free?
Yes. It is completely free, needs no account, and runs in your browser.
Is my data uploaded when I use the Date Difference Calculator?
No. Processing happens locally on your device. We do not upload your inputs, files or generated passwords.
How does the Date Difference Calculator work?
Subtracts the two dates at UTC midnight to avoid daylight-saving drift, then breaks the total days into weeks and approximate years/months.