📨 Contact Us

Do you have any questions, suggestions, or have you found any errors in our calculators?
Talk to us! Your opinion is very important for us to continue improving Cálculo Confiável.

You can contact us via email:
📧 faleconosco@calculoconfiavel.com.br

We will respond as soon as possible, usually within 2 business days.
We are also open to partnerships, suggestions for new tools, or corrections to indexes and formulas.

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Frequently Asked Questions

Is Cálculo Confiável free?

Yes! All calculators and converters available on the site are 100% free and can be used freely by anyone, without registration required.

Are the results from the calculators official?

The formulas and indices used are based on official sources (such as IBGE, FGV, Central Bank, among others), but the results are for informational and educational purposes only and do not replace official calculations or professional opinions.

Does the website store my personal data?

No. Cálculo Confiável does not require login and does not collect personally identifiable information. We only use technical and analytical cookies, as described in our Privacy Policy, to improve the user experience and display ads.

Do calculators work offline?

Most calculators only work online, as they rely on up-to-date data and indexes. If there is no connection, some tools may display an error message indicating that an internet connection is required.

How can I suggest a new calculator or tool?

Send your suggestion to faleconosco@calculoconfiavel.com.br with the subject line “Calculator Suggestion”.

Tell us which calculation you'd like to see available — we're always expanding our collection of useful tools.

How do I update indexes or data that appear to be outdated?

The indices (such as IGP-M, INCC, IPCA, among others) are automatically updated as they are officially released. If you notice any discrepancies, please send us an email indicating the name of the index and the month in question, and we will investigate quickly.