1. Acceptance of Terms
Welcome to PeriodCalculator.com ("the Site," "we," "us," or "our"). These Terms of Service ("Terms") govern your access to and use of PeriodCalculator.com, including all tools, calculators, content, and features available on the Site.
By accessing or using PeriodCalculator.com in any way, including browsing the website, using our calculators, reading our articles, or submitting information through our contact form, you confirm that you:
- Are at least 13 years of age.
- Have read, understood, and agree to be bound by these Terms of Service.
- Have read and agree to our Privacy Policy, which is incorporated into these Terms by reference.
If you are using the Site on behalf of an organization, you represent that you have the authority to bind that organization to these Terms.
If you do not agree to these Terms, you must immediately stop using PeriodCalculator.com. These Terms constitute a legally binding agreement between you and PeriodCalculator.com, and we reserve the right to update them at any time as described in Section 13.
2. Description of Service
PeriodCalculator.com is a free online educational health resource that provides the following:
2.1 Free Calculators and Tools
- Period Calculator for predicting future period dates based on cycle history.
- Ovulation Calculator for estimating ovulation timing and the fertile window.
- Period Tracker for logging and visualizing cycle history in the browser.
- Safe Period Calculator for identifying statistically lower-risk and higher-risk cycle days.
- Due Date Calculator for estimating due dates and pregnancy milestones.
- Additional menstrual health planning tools and supporting site features.
2.2 Educational Health Content
- Blog articles and guides on menstrual health, ovulation, fertility, and related topics.
- Health content reviewed for general clinical accuracy by Dr. Sarah Mitchell, MD.
- Planning-focused explanations that are intended to help users interpret general cycle patterns.
2.3 Service Availability
We provide our tools and content free of charge and without requiring user registration. We strive to maintain continuous availability of the Site, but we do not guarantee uninterrupted access, error-free operation, or that every page or feature will always remain available.
We reserve the right to modify, suspend, or discontinue any part of the Site at any time without prior notice. We will not be liable to you or any third party for any modification, suspension, or discontinuation of the service.
3. Medical Disclaimer
Please read this section carefully. It contains important limitations on the use of our content.
3.1 Educational Purpose Only
All content on PeriodCalculator.com, including calculators, tools, articles, guides, and other materials, is provided for general educational and informational purposes only.
The information on this Site is not intended to:
- Constitute medical advice.
- Diagnose any medical condition.
- Recommend any specific treatment, medication, or contraceptive method.
- Replace consultation with a qualified healthcare professional.
- Serve as the sole basis for any health-related or fertility-related decision.
3.2 Not a Medical Provider
PeriodCalculator.com is not a medical provider, healthcare facility, or licensed medical practice. We do not provide patient-specific care through this website, and use of the Site does not create a doctor-patient relationship, therapist-patient relationship, or similar professional relationship.
Our medical reviewer evaluates content for general accuracy and clarity, but that review does not mean the Site is tailored to your personal medical history, symptoms, medications, or risk profile.
3.3 Calculator Limitations
Our calculators, including the Period Calculator, Ovulation Calculator, Safe Period Calculator, and Due Date Calculator, provide estimates based on statistical averages and the information you enter. These estimates:
- Are mathematical predictions, not medical diagnoses.
- May not accurately reflect your individual physiology or timing.
- May be less accurate for people with irregular cycles, hormonal conditions, postpartum changes, or other health factors.
- Should not be used as the sole basis for fertility planning, contraception, or pregnancy decisions.
The Safe Period Calculator is based on averages and is not a reliable method of contraception. We strongly recommend consulting a qualified healthcare provider for contraception advice.
3.4 Seek Professional Medical Advice
Always seek the advice of a qualified healthcare provider, such as a physician, OB-GYN, or licensed nurse practitioner, with any questions you may have regarding a medical condition, menstrual health concern, fertility issue, pregnancy concern, or any other health matter.
Never disregard professional medical advice or delay seeking it because of something you have read on PeriodCalculator.com.
3.5 Emergency Situations
If you are experiencing a medical emergency, call your local emergency services immediately, such as 911 in the United States. Do not use this website to seek emergency medical assistance.
3.6 No Endorsement of Specific Treatments
References to specific tests, products, procedures, opinions, or other information on this Site do not constitute or imply endorsement by PeriodCalculator.com. We do not recommend or endorse any specific healthcare provider, product, treatment, or medical brand unless we explicitly say so in a separate written disclosure.
4. Intellectual Property
4.1 Our Content
All content on PeriodCalculator.com, including text, articles, guides, calculator designs, graphics, logos, icons, images, digital downloads, data compilations, and software, is the property of PeriodCalculator.com or its content suppliers and is protected by applicable intellectual property laws, including copyright and trademark laws.
The PeriodCalculator.com name and all related names, logos, product names, designs, and slogans are trademarks or brand assets of PeriodCalculator.com. You may not use such marks without our prior written permission.
4.2 Limited License to Users
We grant you a limited, non-exclusive, non-transferable, revocable license to access and use PeriodCalculator.com for your personal, non-commercial use, subject to these Terms.
This license does not include the right to:
- Reproduce, distribute, or publicly display our content without permission.
- Modify or create derivative works based on our content.
- Use our content or site design for commercial purposes.
- Scrape, crawl, or systematically download content from the Site.
- Remove any copyright, trademark, or other proprietary notices.
4.3 User-Submitted Content
If you submit content to us, such as through our contact form or a feedback mechanism, you grant us a non-exclusive, royalty-free, worldwide license to use, reproduce, store, and display that content for the purpose of operating, responding to, and improving our services.
You represent that any content you submit does not infringe the intellectual property rights, privacy rights, or other rights of any third party.
4.4 Fair Use
Nothing in these Terms limits your rights under applicable fair use, fair dealing, quotation, or similar doctrines under copyright law.
5. Permitted Use
Subject to these Terms, you may use PeriodCalculator.com for the following purposes:
- Use our calculators and tools for your own personal menstrual health tracking, planning, and education.
- Read our educational health articles and guides for personal informational purposes.
- Share links to our content on social media or other platforms, provided you do not misrepresent the source or meaning of the content.
- Quote brief excerpts from our articles for commentary, criticism, or educational discussion with appropriate attribution to PeriodCalculator.com.
- Contact us through our contact form or email addresses for legitimate support, partnership, or editorial inquiries.
- Print individual pages for your own non-commercial reference.
6. Prohibited Use
You agree not to use PeriodCalculator.com in the following ways:
- Violate any applicable local, national, or international law or regulation.
- Reproduce, duplicate, copy, sell, resell, or exploit any portion of the Site for commercial purposes without our written permission.
- Systematically extract data from the Site using scraping, crawling, spidering, or similar automated tools without our prior written consent.
- Attempt to gain unauthorized access to any part of the Site, its servers, or any database connected to the Site.
- Transmit spam, deceptive inquiries, or other unsolicited commercial communications through our contact form or other site channels.
- Introduce viruses, trojans, worms, logic bombs, or other malicious or harmful material.
- Impersonate PeriodCalculator.com, our team, medical reviewer, or any other person or entity.
- Use the Site in a way that could disable, overburden, damage, or impair it, or interfere with another user's use of the Site.
- Represent our calculators or content as professional medical guidance or use them to provide medical advice to other people.
- Misrepresent the accuracy or reliability of our calculator results in a way that could foreseeably harm others.
Violation of these prohibited use provisions may result in immediate restriction or termination of your access to the Site and may expose you to civil or criminal liability where applicable.
7. Advertising Disclosure
7.1 Third-Party Advertising
PeriodCalculator.com may display third-party advertisements, including advertisements served by Google AdSense, a web advertising service provided by Google LLC. When advertising is enabled, those advertisements help us fund the operation of our free tools and medically reviewed content.
By using PeriodCalculator.com, you acknowledge and agree that:
- The Site may contain third-party advertisements.
- Those advertisements may be served by Google AdSense and its advertising partners.
- Google may use cookies and similar technologies to serve personalized ads based on browsing history.
7.2 Advertiser Responsibility
Advertisements displayed on PeriodCalculator.com are provided by third-party advertising systems. We do not control the specific advertisements shown to individual users, the targeting logic used to select them, or the claims made by advertisers.
PeriodCalculator.com is not responsible for:
- The content, accuracy, legality, or safety of third-party advertisements.
- Any products or services advertised on the Site.
- Any transaction, dispute, or loss arising between you and an advertiser.
Any dealings you have with advertisers found on or through the Site are solely between you and the advertiser.
7.3 Editorial Independence
Advertising relationships do not determine our editorial positions. We do not accept payment to feature specific products, treatments, services, or medical opinions in our health articles or tool descriptions, and editorial decisions are made independently of advertising considerations.
7.4 Opting Out of Personalized Ads
You can review or opt out of personalized advertising from Google by visiting https://www.google.com/settings/ads.
For more information about how Google uses data for advertising, please review Google's Privacy Policy at https://policies.google.com/privacy.
7.5 Ad Blocker Use
You are free to use ad-blocking software when visiting PeriodCalculator.com. Advertising revenue helps us keep our tools and health content free to use, but use of an ad blocker does not violate these Terms.
8. Third-Party Links and Resources
8.1 External Links
PeriodCalculator.com may contain links to third-party websites, resources, or services that are not owned or controlled by us. These links are provided for convenience and informational purposes only.
We have no control over, and assume no responsibility for, the content, privacy policies, or practices of third-party websites. We do not endorse or make representations about third-party websites or the products, services, or information available on them.
8.2 Medical References and Sources
Our health articles may include links to peer-reviewed medical studies, clinical guidelines, and authoritative health organization websites, such as ACOG, ASRM, PubMed, government health resources, or similar references. These links are provided to support transparency and source review.
Linking to a study or organization does not constitute an endorsement of every statement on that website, nor does it mean the linked material applies to your individual medical situation.
8.3 Your Responsibility
When you leave PeriodCalculator.com by following a link to a third-party site, you do so at your own risk. We encourage you to review the privacy policy and terms of service of any third-party website you visit.
9. Disclaimer of Warranties
To the fullest extent permitted by applicable law, PeriodCalculator.com and its operators provide the Site and all content, tools, and services on an "as is" and "as available" basis, without warranties of any kind, either express or implied.
We expressly disclaim all warranties, including but not limited to:
- Implied warranties of merchantability, fitness for a particular purpose, and non-infringement.
- Warranties that the Site will be uninterrupted, error-free, or free of viruses or harmful components.
- Warranties regarding the accuracy, reliability, completeness, or timeliness of site content or calculator results.
- Warranties that the Site will meet your requirements, expectations, or intended outcome.
Some jurisdictions do not allow the exclusion of implied warranties, so some of the above exclusions may not apply to you.
In Plain Language
Our calculators provide estimates based on averages and user-entered information. They are not guaranteed to be accurate for your individual situation, and the site may occasionally have errors, outages, or outdated information.
Use our tools as a starting point for planning, not as a definitive medical or legal resource.
10. Limitation of Liability
To the fullest extent permitted by applicable law, in no event shall PeriodCalculator.com, its operators, employees, agents, partners, or content providers be liable for indirect, incidental, special, consequential, punitive, or similar damages arising out of or related to your use of, or inability to use, the Site.
This limitation includes, without limitation, damages resulting from:
- Loss of profits, revenue, data, goodwill, or other intangible losses.
- Reliance on information or calculator results provided on the Site.
- Unauthorized access to or alteration of your data.
- Health outcomes resulting from decisions made based on Site content or estimator outputs.
- Interruptions, bugs, or security issues affecting site availability.
This limitation applies whether the claim arises in contract, tort, negligence, strict liability, or any other legal theory, and even if we have been advised of the possibility of such damages.
Some jurisdictions do not allow the limitation of liability for certain damages, so some of these limitations may not apply to you.
In Plain Language
If you make a health or planning decision based on our content or calculator results and that decision leads to a negative outcome, we are not taking legal responsibility for that outcome.
The safe approach is to treat this site as an educational planning aid and consult a qualified healthcare provider for personal medical decisions.
11. Indemnification
You agree to defend, indemnify, and hold harmless PeriodCalculator.com and its operators, employees, agents, and partners from and against any claims, liabilities, damages, judgments, awards, losses, costs, expenses, or fees, including reasonable attorneys' fees, arising out of or relating to:
- Your violation of these Terms of Service.
- Your use of the Site in a manner not authorized by these Terms.
- Your violation of any third-party rights, including intellectual property rights.
- Any content or material you submit through the Site.
- Your violation of any applicable law or regulation.
This indemnification obligation will survive the termination of these Terms and your use of the Site.
12. Privacy Policy
Your use of PeriodCalculator.com is also governed by our Privacy Policy, which is incorporated into these Terms of Service by this reference.
Our Privacy Policy explains:
- What information we collect when you use the Site.
- How we use and protect that information.
- Our use of cookies and similar tracking technologies.
- How advertising and analytics disclosures apply when those features are enabled.
- Your rights regarding your personal information.
- How to contact us with privacy concerns.
By using PeriodCalculator.com, you consent to the data practices described in our Privacy Policy, to the extent those practices apply to the features you choose to use.
13. Modifications to Terms
13.1 Our Right to Modify
We reserve the right to modify, update, or replace these Terms of Service at any time at our sole discretion. Changes become effective immediately upon posting the updated Terms to this page unless a later effective date is specifically stated.
13.2 How We Notify You
When we make changes to these Terms, we will:
- Update the "Last Updated" date at the top of this page.
- Post the revised Terms at this URL: periodcalculator.com/terms-of-service.
- Provide additional notice on the Site for material changes where appropriate.
13.3 Your Continued Use
Your continued use of PeriodCalculator.com after any changes to these Terms constitutes your acceptance of the updated Terms. If you do not agree to the updated Terms, you must stop using the Site.
13.4 Reviewing These Terms
We encourage you to review these Terms periodically. Previous versions of these Terms are available upon request by contacting us at contact@aigotowork.work.
14. Termination
14.1 Termination by Us
We reserve the right to terminate or suspend your access to PeriodCalculator.com at any time, without notice, for any reason, including if we believe you have violated these Terms of Service or have used the Site in a way that creates legal, security, or operational risk.
Because our Site does not require registration for general use, termination may mean blocking your IP address, limiting your access to certain features, or taking other technical measures to prevent further access.
14.2 Effect of Termination
Upon termination of your access:
- Your right to use the Site immediately ceases.
- Provisions that by their nature should survive termination will survive, including Medical Disclaimer, Intellectual Property, Disclaimer of Warranties, Limitation of Liability, and Indemnification.
14.3 Termination by You
You may stop using PeriodCalculator.com at any time. Since no account registration is required, no formal cancellation process is needed.
15. Governing Law and Dispute Resolution
15.1 Governing Law
These Terms of Service and any disputes arising out of or related to them or your use of PeriodCalculator.com shall be governed by and construed in accordance with applicable law, without regard to conflict of law principles to the extent permitted.
15.2 Informal Resolution
Before initiating any formal legal proceeding, we encourage you to contact us first to attempt to resolve any dispute informally. Please reach out to us at contact@aigotowork.work with a description of your concern. We will make a good-faith effort to resolve the issue within 30 days.
15.3 Severability
If any provision of these Terms is found to be unenforceable or invalid, that provision will be limited or eliminated to the minimum extent necessary, and the remaining provisions will remain in full force and effect.
15.4 Entire Agreement
These Terms of Service, together with our Privacy Policy, constitute the entire agreement between you and PeriodCalculator.com regarding your use of the Site and supersede prior understandings regarding that use.
15.5 Waiver
Our failure to enforce any right or provision of these Terms will not be considered a waiver of those rights. Any waiver of any provision will be effective only if in writing and signed by us.
16. Contact Us
If you have any questions, concerns, or feedback about these Terms of Service, please contact us:
We aim to respond to all Terms-related inquiries within 5 business days.
For privacy-related questions, please refer to our Privacy Policy or contact us at the same email addresses above.
PeriodCalculator.com
contact@aigotowork.work