Terms of Service

Last updated: April 4, 2026

1. Acceptance of Terms

By accessing and using the website located at percentageincreasecalculator.app ("the site", "our site", "we", "us"), you acknowledge that you have read, understood, and agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, you must discontinue use of the site immediately.

These Terms apply to all visitors, users, and anyone who accesses the site, regardless of whether you use the calculator tool or simply browse the content.

2. Description of Service

Percentage Increase Calculator is a free, browser-based mathematical tool that calculates percentage changes between two values. The service includes:

• A three-field percentage calculator (original value, new value, percentage change)
• A quick calculator for applying a percentage increase to a value
• Step-by-step formula breakdowns and visual comparison charts
• Educational content about percentage calculations

All calculations are performed entirely within your web browser using JavaScript. No calculation data is transmitted to any server. The site does not require registration, login, or any form of payment.

3. No Warranty and Accuracy Disclaimer

The site and all of its content, tools, and results are provided on an "as is" and "as available" basis, without warranties of any kind, either express or implied, including but not limited to:

• Implied warranties of merchantability or fitness for a particular purpose
• Warranties of accuracy, reliability, or completeness of results
• Warranties of uninterrupted or error-free operation
• Warranties that the site is free of viruses or harmful components

While we strive for mathematical accuracy, floating-point arithmetic in browsers can introduce minor rounding differences. You should not rely on this tool as the sole basis for financial, legal, medical, tax, or other critical decisions. Always verify important calculations independently or consult a qualified professional.

4. Limitation of Liability

To the maximum extent permitted by applicable law, we shall not be liable for any direct, indirect, incidental, special, consequential, or punitive damages, including but not limited to:

• Financial losses resulting from reliance on calculator results
• Loss of data, profits, or business opportunities
• Damages arising from inability to access the site
• Damages arising from unauthorized access to or alteration of the site

This limitation applies whether the alleged liability is based on contract, tort, negligence, strict liability, or any other basis, even if we have been advised of the possibility of such damage.

5. Acceptable Use

You agree to use the site only for lawful purposes and in a manner that does not infringe upon the rights of others. Specifically, you agree not to:

• Attempt to disrupt, disable, or overload the site's infrastructure through denial-of-service attacks, excessive automated requests, or similar methods
• Attempt to gain unauthorized access to the site's server, hosting environment, or associated systems
• Use automated tools (bots, scrapers, crawlers) to excessively access the site in a manner that degrades performance for other users
• Reproduce, mirror, or redistribute the site in a way that misrepresents its origin or creates confusion about the official site
• Use the site to facilitate any illegal activity
• Introduce malicious code, malware, or exploits through any means

6. Intellectual Property

The source code of this site is available under the Apache License 2.0 on GitHub. You are free to use, modify, and distribute the code in accordance with that license.

However, the following elements are not covered by the open-source license and remain the property of the site owner:

• The site name "Percentage Increase Calculator" as a brand identity
• The specific visual design, color scheme, and graphical elements unique to this site
• The original written content, including SEO text, FAQ answers, and educational articles
• The OG image and favicon design

7. Third-Party Services and Links

This site uses the following third-party services:

• Google Fonts — for web typography. Subject to Google Fonts Terms.
• GitHub — for source code hosting. Subject to GitHub Terms of Service.

The site may contain links to external websites. We do not control, endorse, or assume responsibility for the content, privacy practices, or terms of any third-party sites. Visiting external links is at your own risk.

8. Indemnification

You agree to indemnify, defend, and hold harmless the site owner and any associated parties from and against any claims, damages, losses, liabilities, costs, or expenses (including reasonable legal fees) arising out of or related to your violation of these Terms or your use of the site.

9. Termination

We reserve the right to restrict or terminate access to the site for any user who violates these Terms, at our sole discretion, without prior notice. Since this is a free, publicly accessible tool with no user accounts, termination would typically take the form of IP-level blocking if necessary.

10. Modifications to the Service

We reserve the right to modify, suspend, or discontinue the site (in whole or in part) 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.

11. Changes to These Terms

We may revise these Terms at any time by updating this page. The "Last updated" date at the top reflects the most recent revision. Your continued use of the site after changes are posted constitutes your acceptance of the revised Terms. We encourage you to review this page periodically.

12. Severability

If any provision of these Terms is found to be unenforceable or invalid by a court of competent jurisdiction, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

13. Governing Law

These Terms shall be governed by and construed in accordance with applicable law, without regard to conflict of law principles. Any disputes arising from these Terms or your use of the site shall be resolved in the appropriate courts of the applicable jurisdiction.

14. Entire Agreement

These Terms, together with the Privacy Policy and Cookie Policy, constitute the entire agreement between you and us regarding your use of the site and supersede any prior agreements or understandings.

15. Contact Us

If you have any questions or concerns about these Terms of Service, please contact us by opening an issue on our GitHub repository.