Use Age in Days as a practical reference, not as an authority.

These terms explain how to use the calculator and guide library responsibly, what the site can and cannot promise, and how to report issues.

Acceptable use

Use this site for personal planning, date interpretation, educational research, and general calendar reference. Do not use the site to interfere with other users, automate abusive traffic, scrape content at scale, or misrepresent the calculator as an official policy source.

Calculator limits

The calculator is designed around ordinary calendar-date questions. It does not replace legal, immigration, payroll, school-admissions, medical, financial, or professional rules that may define dates differently.

Guide content

The guides are original explanatory material written to help users understand date calculations, common mistakes, and interpretation limits. They are informational and may be revised when a clearer explanation or correction is needed.

Third-party services and interface separation

Optional third-party content or widgets should not appear inside calculator inputs, result cards, empty states, navigation, or action areas, and they should not be presented as part of a required calculation step.

Corrections and availability

If you find a calculation issue, broken link, accessibility concern, or unclear explanation, contact the support inbox with the page URL and the dates or browser details needed to reproduce the issue. The site may change or be unavailable at times during maintenance.