Terms of Service

Last updated: February 26, 2026

1. Acceptance of Terms

Welcome to CalculatorSir ("we," "us," "our," or "the Website"). By accessing or using CalculatorSir.com, you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, you must not access or use our Website.

These Terms constitute a legally binding agreement between you and CalculatorSir. Please read them carefully.

2. Changes to Terms

We reserve the right to modify, amend, or update these Terms at any time without prior notice. Changes will be effective immediately upon posting to this page. The "Last updated" date at the top of this page indicates when these Terms were last revised.

Your continued use of the Website after any changes constitutes your acceptance of the new Terms. We encourage you to review these Terms periodically to stay informed of any updates.

3. Description of Service

CalculatorSir provides free online calculators and tools for various purposes, including but not limited to:

Our calculators are designed for informational and educational purposes only. All calculations are performed in your browser and are not stored on our servers.

4. Eligibility and Age Requirements

You must be at least 13 years of age to use this Website. By using our Website, you represent and warrant that you are at least 13 years old. If you are under 13, you are not permitted to use this Website.

If you are between 13 and 18 years old (or the age of legal majority in your jurisdiction), you may only use the Website under the supervision of a parent or legal guardian who agrees to be bound by these Terms.

5. Permitted Use of Calculators

You are granted a limited, non-exclusive, non-transferable, revocable license to use our calculators for personal, non-commercial purposes. You agree to:

  • Provide accurate and truthful input data
  • Use calculation results for informational purposes only
  • Verify important calculations independently through professional sources
  • Not rely solely on our calculators for critical financial, health, or legal decisions
  • Use the Website in compliance with all applicable laws and regulations

6. Prohibited Uses

You agree not to use the Website for any unlawful purpose or in any way that violates these Terms. Prohibited activities include, but are not limited to:

  • Using automated systems (bots, scrapers, etc.) to access the Website without our express written permission
  • Attempting to reverse engineer, decompile, or extract source code from our calculators
  • Introducing viruses, malware, or other harmful code
  • Interfering with or disrupting the Website's servers or networks
  • Attempting to gain unauthorized access to any portion of the Website
  • Impersonating any person or entity or falsely stating your affiliation with any person or entity
  • Harvesting or collecting information about other users
  • Using the Website for commercial purposes without our written consent
  • Copying, distributing, or modifying any part of the Website without our written permission
  • Removing, altering, or obscuring any copyright, trademark, or other proprietary notices

7. Professional Advice Disclaimer

IMPORTANT: The calculators and information provided on this Website are for informational and educational purposes only and do not constitute professional advice.

Financial Calculators

Our financial calculators do not constitute financial, investment, tax, or legal advice. You should consult with a qualified financial advisor, accountant, or attorney before making any financial decisions. Calculator results are estimates only and may not reflect actual results.

Health Calculators

Our health and fitness calculators do not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider before making any health-related decisions or starting any diet, exercise, or treatment program. Calculator results are general estimates and may not be appropriate for your individual circumstances.

Educational Calculators

Grade and GPA calculators are provided as estimates only. Always verify your official grades and GPA with your educational institution.

Construction and Technical Calculators

Construction, engineering, and technical calculators are provided for estimation purposes only. Always consult with licensed professionals (engineers, architects, contractors) for actual project planning and execution. We are not responsible for any construction or engineering decisions made based on our calculators.

8. Accuracy and Reliability

While we strive to ensure that our calculators are accurate and up-to-date, we make no representations or warranties regarding:

  • The accuracy, completeness, or reliability of any calculations
  • The suitability of calculators for your specific purposes
  • The timeliness or currency of formulas, rates, or data used
  • The absence of errors, bugs, or interruptions in service

You acknowledge that calculator results may vary based on the data you input and the assumptions used in the calculations. We recommend verifying all important calculations through independent professional sources.

9. Disclaimer of Warranties

THE WEBSITE AND ALL CALCULATORS, TOOLS, AND CONTENT ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO:

  • IMPLIED WARRANTIES OF MERCHANTABILITY
  • FITNESS FOR A PARTICULAR PURPOSE
  • NON-INFRINGEMENT
  • TITLE
  • ACCURACY
  • QUIET ENJOYMENT

We do not warrant that the Website will be uninterrupted, error-free, secure, or free of viruses or other harmful components. For more details, see our Disclaimer.

10. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, CALCULATORSIR AND ITS OWNERS, OPERATORS, EMPLOYEES, AGENTS, AND AFFILIATES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES ARISING FROM OR RELATED TO:

  • Your use or inability to use the Website or calculators
  • Any errors, inaccuracies, or omissions in calculator results
  • Any financial, health, or other decisions made based on calculator results
  • Any loss of data, profits, revenue, or business opportunities
  • Any interruption or cessation of the Website
  • Any viruses or harmful code that may affect your device
  • Any unauthorized access to your data or communications

THIS LIMITATION APPLIES EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND REGARDLESS OF THE LEGAL THEORY (CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR OTHERWISE).

IN JURISDICTIONS THAT DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OUR LIABILITY SHALL BE LIMITED TO THE MAXIMUM EXTENT PERMITTED BY LAW.

11. Indemnification

You agree to indemnify, defend, and hold harmless CalculatorSir and its owners, operators, employees, agents, affiliates, and partners from and against any and all claims, liabilities, damages, losses, costs, expenses, or fees (including reasonable attorneys' fees) arising from:

  • Your use or misuse of the Website
  • Your violation of these Terms
  • Your violation of any rights of another person or entity
  • Your violation of any applicable laws or regulations
  • Any decisions or actions you take based on calculator results

12. Intellectual Property Rights

All content on this Website, including but not limited to calculators, algorithms, text, graphics, logos, images, code, design, and compilation, is the exclusive property of CalculatorSir and is protected by United States and international copyright, trademark, and other intellectual property laws.

You may not:

  • Copy, reproduce, distribute, or publicly display any content without our written permission
  • Create derivative works based on our calculators or content
  • Use our trademarks, logos, or branding without authorization
  • Frame or embed our calculators on other websites without permission

Limited sharing of individual calculator results for personal use is permitted, provided you include proper attribution to CalculatorSir.

13. Privacy and Data Collection

Your use of the Website is also governed by our Privacy Policy, which is incorporated into these Terms by reference. Please review our Privacy Policy to understand our data collection and use practices.

Key points:

  • We do not store the values you enter into our calculators
  • We use cookies and analytics to improve our services
  • We use third-party services (Google Analytics, Google AdSense, Formspree)
  • We comply with GDPR, CCPA, and other privacy regulations

14. Third-Party Links and Services

Our Website may contain links to third-party websites, services, or resources that are not owned or controlled by CalculatorSir. We provide these links for your convenience only.

We have no control over and assume no responsibility for:

  • The content, privacy policies, or practices of third-party websites
  • Any damages or losses caused by third-party services
  • The accuracy or reliability of third-party information

Your use of third-party websites is at your own risk and subject to their terms and conditions.

15. Advertising

We display third-party advertisements on our Website through advertising networks such as Google AdSense. These advertisements help us provide our calculators free of charge.

We do not control the content of advertisements and are not responsible for:

  • The accuracy or reliability of advertised products or services
  • Any transactions between you and advertisers
  • The privacy practices of advertising networks (see our Privacy Policy)

16. User Content and Feedback

If you submit feedback, suggestions, comments, or other communications to us ("User Content"), you grant us a worldwide, perpetual, irrevocable, royalty-free, non-exclusive license to use, reproduce, modify, adapt, publish, and distribute such User Content for any purpose.

You represent and warrant that:

  • You own or have the right to submit the User Content
  • The User Content does not violate any third-party rights
  • The User Content is not defamatory, obscene, or illegal

17. Termination

We reserve the right to terminate or suspend your access to the Website, without prior notice or liability, for any reason, including but not limited to:

  • Violation of these Terms
  • Fraudulent, abusive, or illegal activity
  • Extended periods of inactivity
  • Requests by law enforcement or government agencies

Upon termination, your right to use the Website will immediately cease. All provisions of these Terms that by their nature should survive termination shall survive, including but not limited to disclaimers, limitations of liability, and indemnification.

18. Dispute Resolution and Arbitration

In the event of any dispute, claim, or controversy arising out of or relating to these Terms or your use of the Website, you agree to first attempt to resolve the dispute informally by contacting us at contact@CalculatorSir.com.

If the dispute cannot be resolved informally within 30 days, you agree that any legal action or proceeding shall be resolved through binding arbitration in accordance with the rules of the American Arbitration Association, except where prohibited by law.

Class Action Waiver: You agree to bring any dispute in your individual capacity only, and not as a plaintiff or class member in any purported class, consolidated, or representative proceeding.

19. Governing Law and Jurisdiction

These Terms shall be governed by and construed in accordance with the laws of the United States, without regard to conflict of law principles.

Any disputes not subject to arbitration shall be brought exclusively in the state or federal courts located in the United States, and you consent to the personal jurisdiction of such courts.

20. Severability

If any provision of these Terms is found to be unlawful, void, or unenforceable by a court of competent jurisdiction, that provision shall be deemed severable from these Terms and shall not affect the validity and enforceability of the remaining provisions.

21. Entire Agreement

These Terms, together with our Privacy Policy and Disclaimer, constitute the entire agreement between you and CalculatorSir regarding your use of the Website and supersede all prior agreements and understandings.

22. Waiver

Our failure to enforce any right or provision of these Terms shall not constitute a waiver of such right or provision. Any waiver of any provision of these Terms will be effective only if in writing and signed by an authorized representative of CalculatorSir.

23. Force Majeure

We shall not be liable for any failure or delay in performance due to circumstances beyond our reasonable control, including but not limited to acts of God, natural disasters, war, terrorism, riots, embargoes, acts of civil or military authorities, fire, floods, accidents, pandemics, strikes, or shortages of transportation facilities, fuel, energy, labor, or materials.

24. Notice

We may provide notices to you via email (if provided), by posting on the Website, or by other reasonable means. You agree that all agreements, notices, disclosures, and other communications that we provide to you electronically satisfy any legal requirement that such communications be in writing.

You may contact us regarding these Terms at:

25. Contact Information

If you have any questions, concerns, or comments about these Terms of Service, please contact us:

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