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Frequently Asked Questions

General Questions

Below are answers to the questions we hear most often. For calculator-specific FAQs, see the FAQ section at the bottom of each individual calculator page.

Is ChronoAge free to use?

Yes, every calculator and article on this site is completely free, with no sign-up required.

Do you store the dates I enter?

No. All calculations run in your browser using JavaScript — nothing is transmitted to or stored on our servers.

How accurate are your calculators?

Our calculators use calendar-accurate date math, including automatic leap year handling. See our Editorial Policy for how we verify accuracy.

Can I use these calculators for official/legal documentation?

Our tools are for informational and professional-reference purposes. Always verify against official records for legal or clinical documentation.

Can I suggest a new calculator?

Yes — please reach out through our Contact page with your idea.

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