About Calcunora
Calcunora provides free online calculators for percentages, discounts, ratios and proportions. Each calculator includes formulas, calculation steps and practical examples to help users understand and check their results.
About me
I founded Calcunora to make everyday calculations easier to perform and understand. I manage the website’s development, content and ongoing improvements, with a focus on usability and clear explanations.
The calculators are checked through automated tests covering common calculations, rounding and invalid inputs. Details are available on our Calculation Methodology page.
Get in touch
For questions, feedback or calculation issues, contact info@calcunora.com. Please include the calculator name, input values and expected result.