Terms of use

The service

Saha Hesap provides free engineering and science calculators and a project notebook. You can use the calculators and the browser notebook without an account. Accounts are optional and let you save projects to your account.

Limits of engineering calculations

Results are for preliminary calculations and information. Read each calculator's assumptions, limits and warnings. You are responsible for checking inputs, units and whether the results are suitable for your work.

For work where safety is critical, the final design must be prepared and approved by an authorized engineer in accordance with the standards in force. Site results do not replace that design or approval.

Report calculation errors using Report an error in the calculator or by writing to baretlikafa@gmail.com. Include the calculator name, inputs, units and expected result.

Warranty and liability

We do not guarantee that the calculators or service will be free of errors, uninterrupted or suitable for every purpose. To the extent permitted by law, we are not liable for loss arising from using results without checking them or using a calculator outside its stated limits.

These terms do not limit rights that cannot be waived under law, including consumer rights. Any liability that cannot legally be excluded or limited remains unaffected.

Acceptable use

You may use calculator outputs for personal and commercial work. Do not try to disrupt the site, overload it with excessive automated requests or access another person's account or data without permission.

Optional accounts

You can create an account by signing in with Google. You are responsible for protecting access to your account. Access may be restricted or the account closed in cases of misuse.

Use Delete my account and data in the account menu to delete your account and data on the server. Separately remove offline copies on other devices and downloaded files. The Privacy page explains data processing and the scope of deletion.

Intellectual property

Rights to the site's design and text belong to their respective rights holders. Permission to use calculator outputs does not grant permission to copy the entire design or texts. Components remain subject to their own licenses.

You retain the rights to content you add to the project notebook. Saving it does not transfer your rights to the site. You are responsible for having the right to use and share content you upload.

Advertising

The site may display advertisements. The site is not responsible for advertisers' content, products or services. Any liability that cannot legally be excluded remains unaffected.

Changes and effective date

Effective date: 16 October 2026.

If these terms change, the updated text and effective date will be published on this page. Changes do not remove your statutory rights.

Governing law and contact

These terms are governed by the laws of the Republic of Türkiye. Your rights under mandatory consumer protection rules remain unaffected.

Contact: baretlikafa@gmail.com

How personal data is processed and who the data controller is are explained on the Privacy page.