About us

Szybkie-Kalkulatory.pl is an independent collection of free calculators. You arrive from search, calculate and get a result in under a minute — without an account or unnecessary steps.

Calculate and move on

Each calculator shows the result, formula, worked example and sources. Values are calculated locally in your browser and are not sent to a product database.

How we maintain quality

• automated tests for formulas and edge cases
• examples generated by the same function as the result
• centralised tax rates with a visible review date

The service is operated by the owner named in the Polish terms. We publish our methodology and rate history openly. How we calculate.

Found an error or have an idea? kontakt@szybkie-kalkulatory.pl.