Terms of Service
Last Updated: January 2026
Acceptance of Terms
By accessing and using the IVF Due Date Calculator website (the "Service"), you agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the Service.
These terms apply to all visitors, users, and others who access or use the Service. We reserve the right to update or modify these terms at any time, and your continued use of the Service following any changes constitutes acceptance of those changes.
Description of Service
IVF Due Date Calculator provides free online calculator tools designed to help users estimate pregnancy due dates, gestational age, and related information based on embryo transfer dates. The Service includes:
- Due date calculation based on embryo transfer date and embryo age
- Gestational age calculation for any specified date
- Pregnancy timeline visualization
- Related informational content and guides
The Service is provided free of charge, requires no account registration, and is accessible via standard web browsers. All calculations are performed locally in your browser.
Service Features Summary
All features of the IVF Due Date Calculator are provided completely free of charge with no restrictions:
| Feature | Availability | Cost |
|---|---|---|
| Due Date Calculator | Available | Free |
| Gestational Age Calculator | Available | Free |
| Pregnancy Timeline | Available | Free |
| Milestone Tracking | Available | Free |
| Trimester Breakdown | Available | Free |
| Print / Save Results | Available | Free |
| Informational Guides | Available | Free |
| Multiple Embryo Types (Day 3, Day 5, Day 6) | Available | Free |
Every feature listed above is completely free. There are no premium tiers, no locked features, and no in-app purchases. You get full access to everything from the moment you visit the site.
Your Rights vs. Our Responsibilities
This table summarizes what you are entitled to as a user and what we commit to as the service provider:
| Topic | Your Rights | Our Responsibilities |
|---|---|---|
| Access | Free, unrestricted access to all calculator features | Provide a reliable, accessible service |
| Privacy | Your data stays on your device; no account required | No collection or sale of personal health data |
| Data Deletion | Request deletion of any contact form submissions | Promptly honor deletion requests |
| Accuracy | Expect calculations based on established medical formulas | Use standard obstetric dating conventions |
| Content | Link to and share the calculator freely | Keep content accurate and up to date |
| Support | Contact us with questions, feedback, or bug reports | Respond to inquiries within 48-72 hours |
| Modifications | Be informed of significant changes to terms | Update the "Last Updated" date when terms change |
| Medical Advice | Consult your own healthcare provider for medical guidance | Clearly state that results are estimates, not medical advice |
Disclaimer of Warranties
The calculations and information provided by this Service are estimates for informational purposes only. The Service is provided "as is" and "as available" without warranties of any kind, either express or implied.
Specifically, the results provided by this calculator are:
- Not medical advice. This calculator does not provide medical diagnoses, treatment recommendations, or professional healthcare guidance.
- Not a substitute for professional care. Always consult your fertility clinic, reproductive endocrinologist, obstetrician, or other qualified healthcare provider for medical advice and official pregnancy dating.
- Estimates only. Your actual due date may differ based on ultrasound measurements, individual circumstances, or your healthcare provider's clinical judgment.
We do not warrant that the Service will be uninterrupted, error-free, or free of harmful components. We do not warrant the accuracy, completeness, or usefulness of any information provided.
Limitation of Liability
To the fullest extent permitted by applicable law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits or revenues, whether incurred directly or indirectly, or any loss of data, use, goodwill, or other intangible losses resulting from:
- Your use of or inability to use the Service
- Any decisions, actions, or outcomes based on calculator results
- Any errors, inaccuracies, or omissions in the calculations or content
- Any unauthorized access to or use of our servers or any personal information
- Any interruption or cessation of the Service
You use this calculator at your own risk. For important medical decisions, always verify results with qualified healthcare professionals.
Accuracy
We strive for accuracy in our calculations based on established medical formulas and methodologies used by fertility clinics worldwide. The formulas used (adding 261 days for a day 5 transfer, etc.) align with standard obstetric dating conventions.
However, we do not guarantee the accuracy of any specific result. Factors that may affect accuracy include:
- Variations in individual pregnancies
- Differences between transfer-based dating and ultrasound measurements
- User input errors
- Edge cases not covered by standard formulas
The formulas and reference data used in our calculations are documented on our About page.
Permitted Use
You may use the Service for personal, non-commercial purposes. Specifically:
- Personal use is welcome. You may use the calculator for your own personal pregnancy planning and tracking.
- Linking is permitted. You may link to our calculators from your website, blog, or social media.
- Sharing is encouraged. You may share the URL with others who might find the calculator helpful.
The following uses are not permitted without prior written consent:
- Scraping, crawling, or automated data collection from the Service
- Embedding or iframing the calculator on other websites
- Copying substantial portions of our content, design, or code
- Using the Service to develop competing products
- Any use that imposes an unreasonable load on our infrastructure
Intellectual Property
The website design, layout, graphics, text content, and code are protected by copyright and other intellectual property laws. You may not reproduce, distribute, modify, or create derivative works from this content without permission.
The mathematical formulas used for IVF due date calculation are based on established medical conventions and are not proprietary. The specific implementation, presentation, and surrounding content are protected.
External Links
The Service may contain links to third-party websites or resources. These links are provided for convenience only. We do not endorse, control, or assume responsibility for the content, privacy policies, or practices of any third-party websites.
You acknowledge and agree that we are not responsible or liable for any damage or loss caused by or in connection with the use of any third-party content, goods, or services.
Modifications to the Service
We reserve the right to modify, suspend, or discontinue the Service (or any part thereof) at any time, with or without notice. We shall not be liable to you or any third party for any modification, suspension, or discontinuation of the Service.
Termination
We may terminate or suspend your access to the Service immediately, without prior notice or liability, for any reason, including without limitation if you breach these Terms of Service.
Upon termination, your right to use the Service will immediately cease.
Severability
If any provision of these Terms of Service is found to be unenforceable or invalid by a court of competent jurisdiction, that provision will be limited or eliminated to the minimum extent necessary, and the remaining provisions will continue in full force and effect.
Entire Agreement
These Terms of Service, together with our Privacy Policy, constitute the entire agreement between you and IVF Due Date Calculator regarding your use of the Service, superseding any prior agreements.
Contact
If you have any questions about these Terms of Service, please contact us at: