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duedate calculator

Privacy Policy

Last updated: October 5, 2026

The short version: we do not sell your personal data, we do not require accounts, and every calculator runs entirely in your browser — no date you enter is sent to or stored on our servers.

1. Who We Are

DueDateCalculator.com (“we”, “our”, or “the site”) is a free online pregnancy due date calculator service accessible at www.duedate-calculator.com. If you have any privacy questions, email us at privacy@duedate-calculator.com.

2. Information We Collect

2a. Calculator Inputs — We Never See These

All calculator computations (your last menstrual period, IVF transfer date, ultrasound measurements, and any other dates) are performed entirely within your browser using JavaScript. We do not transmit, log, or store any dates or personal health information you enter into our calculators. When you close the tab, that information is gone from our perspective — it was never ours.

2b. Usage and Analytics Data

Like most websites, we measure how the site is used so we can improve it. We use Google Analytics and Microsoft Clarity, which may record standard technical information such as your IP address, browser type, device, pages visited, and time spent on pages. Clarity may also create anonymized session recordings and heatmaps showing how visitors interact with pages. This data is analyzed in aggregate form and is not linked to your identity by us. If you prefer not to be measured, you can opt out of Google Analytics with the Google Analytics Opt-out Browser Add-on, and most browsers or privacy extensions can block Clarity as well.

2c. Cookies

We use a small number of cookies and similar technologies for three purposes:

You can delete or block cookies in your browser settings at any time. Blocking cookies will not break our calculators, though some site features may be less convenient.

Your choices: most browsers let you block third-party cookies specifically, which stops analytics and advertising cookies while keeping the site working normally. Privacy extensions and built-in tracking protection (such as those in Firefox, Safari, and Brave) also block most of the third-party cookies described above by default. We do not currently respond to “Do Not Track” signals because there is no agreed industry standard for how to interpret them — but the blocking tools above work regardless.

2d. Messages You Send Us

If you email us (for example, at hello@duedate-calculator.com or editorial@duedate-calculator.com), we receive your email address and whatever you include in the message. We use this only to respond to you and to improve our content. We do not add you to a marketing list, and we never share your messages with advertisers.

3. How We Use Information

We use the limited information we collect to:

We do not sell or rent your personal data to anyone. We do not build advertising profiles of individual visitors ourselves.

4. Third-Party Services

We work with a small number of third parties that process data on our behalf, each under their own privacy policy:

Our hosting provider may retain standard server logs (such as IP addresses and requested pages) for a limited time for security purposes.

5. Data Retention

Because we do not store calculator inputs at all, there is no health data of yours sitting on our servers to retain or delete. Emails you send us are kept only as long as needed to handle your enquiry. Analytics data is retained according to the retention settings of Google Analytics and Microsoft Clarity.

6. Data Security

All connections to the site use HTTPS encryption. Because we never collect or store the dates you enter into calculators, the risk of your health information being exposed in a breach is minimized by design. No method of transmission over the internet is completely secure, but we apply reasonable safeguards to the data we do handle.

7. International Visitors

Our servers and service providers may be located outside your country. By using the site, you understand that technical data such as your IP address may be processed in other jurisdictions with different data-protection laws.

8. Children’s Privacy

Our site is intended for adults and is not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us at privacy@duedate-calculator.com and we will delete it promptly.

9. Your Rights

Depending on where you live, you may have rights under laws such as the GDPR (EU/UK) or the CCPA (California), including the right to access, correct, or delete personal data held about you, and the right to object to or restrict certain processing. Because we do not store the health data you enter into calculators, there is typically no calculator data to access or delete. For any other request, email privacy@duedate-calculator.com and we will respond within a reasonable time. California residents: we do not “sell” or “share” personal information as defined by the CCPA.

10. Changes to This Policy

We may update this Privacy Policy from time to time, for example if we add new analytics tools or change advertising partners. When we do, we will update the “Last updated” date at the top of this page. Continued use of the site after changes take effect means you accept the updated policy.

11. Contact

If you have any questions about this Privacy Policy or how we handle data, contact us at privacy@duedate-calculator.com.