By using this site, you agree to these terms.

1. Acceptance

By visiting or using Yaya Tools (yayatool.com), you agree to these Terms of Service. They apply together with the privacy policy. If you use the site on behalf of an organisation, you represent that you have authority to bind that organisation.

2. The service

Yaya Tools is a set of free browser utilities for calculating, converting, formatting, and processing what you enter on a page. We do not require an account and do not offer features that need sign-in.

Unless a page clearly says otherwise, tools run locally in your browser. We do not upload the text, numbers, files, or images you enter to Yaya Tools servers in order to complete a calculation.

Results are for learning, checking, and planning. They are not financial, tax, medical, legal, or credit advice, and they do not replace figures from a school, bank, hospital, tax authority, or other official source.

3. Your inputs and responsibility

You are responsible for what you enter. Do not treat the site as a vault: on a public or shared device, decide whether to type sensitive information, then close the tab or clear local data when you are done.

You must not use the site to process content you have no right to process, or use the output for an unlawful purpose. Copyrights, trademarks, and other rights remain with their owners.

4. Acceptable use

When you use the site, you agree not to:

• Use the service for any illegal purpose or in violation of applicable laws
• Attempt to disrupt, overload, probe, or compromise the site, hosting, or security measures
• Scrape or harvest pages at scale without permission, or present Yaya Tools as your own service
• Upload malware, or send spam or harassing content through contact channels
• Bypass access limits, or automate use in a way that interferes with others

5. Accuracy of results

Tools compute from the formulas and inputs stated on the page. Rounding, units, day-count, tax rates, activity factors, or syllabus weights can make on-screen figures differ from a bank, school, hospital, or official document.

Before you act on a result, recheck it from the original inputs and the rules that apply to your situation. For personalised advice, consult a qualified professional.

6. No warranty

The site is provided “as is” without warranties of any kind, express or implied. We do not guarantee uninterrupted or error-free service, or that any estimate will match the result you intended.

7. Limitation of liability

To the maximum extent permitted by law, Yaya Tools and its operators are not liable for indirect, incidental, special, consequential, or punitive damages arising from use or inability to use the site, including decisions based on an estimate, lost time, or interruption of a third-party service.

8. Third-party services

To deliver pages, protect the service, and understand basic traffic, the site may use hosting, network, and Google Analytics services. How they handle data is governed by their own privacy policies. See the privacy policy for the full explanation.

9. Changes

We may update these terms from time to time. The “Last updated” date reflects the latest revision. Material changes will be published on this page. Continued use after a change means you accept the updated terms.

10. Contact

Questions about these terms? Email us or use the contact page.