About iDuckCalculator
A small, friendly set of calculators that run in your browser, made by Basic App Company.
Who runs it
iDuckCalculator is operated by Basic App Company. It is part of the iDuck family with iDuckPDF, iDuckIMG and iDuckConvert, and it follows the same promises: no sign-up, no ads, and everything runs in your browser.
What it costs
Using it costs nothing. The site is static files, so there is no server to run and no database. The only fixed cost is the domain name. Tips will be the only way to support it, and they are never required.
How your numbers are handled
Every calculation runs in your browser tab. The numbers you type are not sent anywhere and are not saved. The only things stored, in your own browser, are your theme and currency choices. Read the privacy page for details.
How the maths is checked
Each of the 49 calculators has an automatic test that compares its result with a known answer, such as an EMI of about ₹8,997 for a ₹10,00,000 loan at 9% over 20 years. Tax and savings-scheme rules are read from official sources, and the page shows the financial year and the date they were read. Results are estimates: lenders, banks and tax portals may round or apply extra charges.
Found a mistake?
Please tell us, with what you typed and what you expected.
How to contact us
iDuckCalculator is a product of Basic App Company. For questions write to [email protected], or use the feedback form for a mistake or an idea. To see how results are tested and where the formulas come from, read how we check our calculators.