About Us
What is RupayaTools?
RupayaTools is a free collection of online calculators built specifically for Indian users. We noticed that most calculator websites are designed for a global or Western audience — dollar amounts, unfamiliar tax rules, and number formats that do not match how India counts. So we built a site where everything is in rupees, uses Indian digit grouping (lakh and crore), and follows the rules that actually apply here, from GST slabs to the Payment of Gratuity Act.
Our mission
Our mission is simple: give every Indian fast, honest answers to everyday money and measurement questions, without asking for anything in return. No sign-up, no paywalls, no app to install, and no personal data collected. Whether you are a salaried employee decoding a CTC offer, a homeowner estimating cement and bricks, or a first-time investor starting a SIP, you should be able to get a reliable number in seconds — on any phone, on any connection.
What the tools cover
RupayaTools currently offers 19 free calculators across four groups:
- Salary calculators — break down your CTC, estimate in-hand pay, compute gratuity and calculate HRA exemption.
- Construction calculators — estimate concrete, cement, sand, bricks and total project cost for Indian building practices.
- Finance calculators — project SIP growth, calculate loan EMIs, estimate FD and PPF maturity, measure investment returns, add or strip GST, and compare income tax under the old and new regimes.
- Everyday utilities — convert numbers to words in Indian format, check your exact age, and solve percentage problems.
Privacy-first by design
RupayaTools is a static website: every calculation happens in your own browser on your own device. We set no cookies, run no analytics, and have no accounts or servers storing your inputs. What you type into a calculator stays on your device. You can read the full details in our privacy policy.
An honest note
Our calculators are planning tools, not professional advice. Tax rules change, interest rates move, and every personal situation is different — so treat results as estimates and verify important decisions with a qualified professional. Please read our disclaimer before relying on any figure.
Found a mistake, or want a calculator we do not have yet? We would love to hear from you on our contact page.