Calculate exact age, days between dates and the next birthday from dates you enter.
Privacy: this tool processes your input in your browser unless clearly stated otherwise. Nothing is uploaded by this page.
Date arithmetic is useful for birthdays, deadlines, eligibility checks and simple planning.
The calculator compares the dates you enter and reports the elapsed period or age using calendar values.
Calendar dates are not the same as timestamps. Time zones, legal definitions and inclusive deadline rules can change the answer.
Yes. It is provided as a free browser-based utility.
No account is required for ordinary use.
No. Treat the result as an estimate or utility output and verify important decisions with the appropriate official source.
See our Methodology & Editorial Standards for how tools are tested and explained.