Terms of Service

Effective date: March 17, 2026 / Last updated: April 4, 2026

1. Scope

These Terms of Service ("Terms") apply to all services provided by TechCalcs ("the Site"). By using the Site, you agree to be bound by these Terms.

2. Permitted Use

The tools on this Site are free to use for both personal and commercial purposes. The following activities are prohibited:

  • Placing excessive load on the Site's servers or network
  • Interfering with the operation of the Site
  • Unauthorized access or exploitation of security vulnerabilities
  • Any activity that violates applicable laws or public order

3. Handling of Input Data

Data entered into the calculation tools on this Site is processed within your browser. Input data is not transmitted to any external server.

Calculation history is stored in your browser's local storage (localStorage). For details, please refer to our Privacy Policy.

4. Disclaimer

The calculation results provided by this Site are for reference purposes only. We make no warranty regarding their accuracy, completeness, or currency. The Site shall not be liable for any damages arising from the use of these results.

The Site may modify or discontinue services without prior notice and shall not be liable for any resulting damages.

5. Intellectual Property

All content on this Site (including text, images, and source code) is protected by copyright and other intellectual property rights owned by the Site operator. Unauthorized reproduction or redistribution is prohibited.

6. Advertising and Third-Party Services

This Site displays advertisements via Google AdSense. For information on how advertising data is handled, please refer to our Privacy Policy.

Advertisements displayed on this Site do not constitute endorsement of any specific products or services by the Site.

7. Governing Law and Jurisdiction

These Terms shall be governed by and construed in accordance with the laws of Japan. In the event of any dispute arising in connection with these Terms, the court with jurisdiction over the location of the operator shall have exclusive jurisdiction as the court of first instance.

8. Changes to These Terms

These Terms may be updated without prior notice due to changes in laws or service content. When changes are made, the last updated date at the top of this page will be revised, and significant changes will be announced on the Site. Your continued use of the Site after any changes constitutes acceptance of the updated Terms.

9. Contact

For questions regarding these Terms, please contact us via: