How do you handle leap day (February 29) birthdays?

We offer three policies for handling February 29 birthdays in non-leap years: ISO/European standard treats it as February 28, while US legal standard treats it as March 1. You can select your preferred policy in the calculator.

What is corrected age for premature infants?

Corrected age (also called adjusted age) accounts for prematurity by subtracting the number of weeks a baby was born before 40 weeks gestation from their chronological age. This gives a more accurate developmental age for premature babies.

How accurate is the age calculation?

Our calculations are precise to the second, accounting for leap years, varying month lengths, and time zones. We use the Temporal API for accurate date/time calculations.

Can I calculate age for a specific date?

Yes! Use the 'Calculate As Of' field to calculate age for any past or future date. This is useful for determining age on specific dates like anniversaries, legal documents, or insurance forms.

How many days old am I?

Enter your birth date in our calculator to find out exactly how many days you've lived. The calculator accounts for leap years and provides precise day counts.

What is the difference between chronological age and corrected age?

Chronological age is the time since birth, while corrected age adjusts for prematurity. For premature babies, corrected age = chronological age minus the number of weeks born early.

Chronological Age Calculator

Effective Date: January 1, 2025

1. Introduction

AgeCalculator Professional ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our age calculation services and website.

2. Information We Collect

2.1 Information You Provide

Date inputs for age calculations (processed locally, not stored)
Contact information when you reach out to us
Email address if you subscribe to our newsletter

2.2 Automatically Collected Information

IP address and browser information
Device and operating system information
Usage data and analytics (anonymized)
Cookies and similar tracking technologies

3. How We Use Your Information

We use the collected information for:

Providing and improving our age calculation services
Responding to your inquiries and support requests
Sending newsletters and updates (with your consent)
Analyzing usage patterns to enhance user experience
Complying with legal obligations

4. Data Security

We implement appropriate technical and organizational security measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. All data transmissions are encrypted using SSL/TLS protocols.

5. Data Retention

We do not store age calculation data. Contact information and support inquiries are retained for up to 2 years or as required by law. You may request deletion of your data at any time.

6. Your Rights

You have the right to:

Access your personal information
Correct inaccurate data
Request deletion of your data
Object to data processing
Data portability
Withdraw consent at any time

7. Cookies

We use essential cookies for website functionality and optional cookies for analytics. You can manage cookie preferences through your browser settings.

8. Third-Party Services

We may use third-party services for analytics and infrastructure. These services have their own privacy policies, and we recommend reviewing them.

9. Children's Privacy

Our services are not directed to children under 13. We do not knowingly collect personal information from children under 13.

10. International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place for such transfers.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the effective date.

12. Contact Us

If you have questions about this Privacy Policy or our data practices, please contact us at:

Email: privacy@agecalculator.pro
Address: 123 Tech Street, Suite 400
San Francisco, CA 94105
United States