About Percentiva
The story behind our free calculators — and the mission to make everyday math simple for everyone.
Welcome to Percentiva — a free collection of online calculators built to give you accurate answers, fast. From percentages and grades to BMI and AdSense revenue estimates, every tool is designed to be simple to use and easy to trust, with step-by-step explanations that show exactly how each result is worked out. There is no sign-up, no paywall, and no clutter — just the answer, and the working behind it.
Percentiva is run by Eshal, its Founder and Editor. Eshal sets the direction of the site and takes responsibility for the accuracy of its calculators and guides — testing each tool before it is published, documenting the formula it uses, and reviewing content regularly so that every result you see here is one you can rely on. This site has a named person behind it, and that person answers for its accuracy.
Percentiva was built for a simple reason: everyday calculations should be simple and trustworthy. Too often, working out a discount, converting a CGPA to a percentage, or checking a health metric means wrestling with a clunky tool — or wondering whether the answer is right. Percentiva exists to take that doubt away: free tools, clear step-by-step explanations, and no sign-up standing between you and the answer you need. That is the standard every tool on this site is held to.
Accuracy is the whole point of a calculator, so we treat it as one. Our standards are straightforward:
These standards apply to every tool and article on Percentiva, because a calculator you cannot trust is not worth using.
We value feedback, questions, and suggestions from our readers.
If you have any questions or would like to contact us, please visit our website:
Thank you for visiting Percentiva.