Free Online Calculators for India
19 fast, free tools for salary, construction and finance — built for how India calculates. No sign-up, no downloads, works on your phone.
Calculators built for India
RupayaTools is a free collection of online calculators made for India. Whether you are checking your monthly in-hand salary, estimating cement and bricks for a new house, or planning a mutual fund SIP, every tool gives you answers in seconds — with Indian number formatting, rupee amounts and the rules that actually apply here.
All 19 calculators run entirely in your browser. There is nothing to install, no account to create, and no personal data leaving your device. The site is lightweight and mobile-friendly, so it works just as well on a phone as on a desktop.
Salary tools decode your CTC, estimate take-home pay and compute gratuity and HRA tax benefits. Construction tools estimate concrete, cement, sand, bricks and overall project cost using Indian site conventions. Finance tools cover SIP growth, loan EMIs, fixed deposits, PPF, investment returns, GST and income tax under both the old and new regimes.
Pick any tool below — results update instantly as you type, and everything is free forever.
Salary Calculators
Salary Calculator
Break down your CTC into basic, HRA, allowances and deductions.
In-Hand Salary Calculator
Estimate your monthly take-home pay after PF, ESI and tax.
Gratuity Calculator
Compute gratuity payable under the Payment of Gratuity Act.
HRA Calculator
Calculate HRA exemption and tax saving on your house rent.
Construction Calculators
Concrete Calculator
Estimate cement, sand and aggregate for slabs, beams and columns.
Brick Wall Calculator
Work out bricks, cement and sand needed for any wall.
Cement Calculator
Find how many cement bags your concrete mix requires.
Bricks Calculator
Estimate the number of bricks for walls of any size.
Construction Cost Calculator
Get a quick cost estimate for your building project.
Finance Calculators
SIP Calculator
Project mutual fund SIP growth with expected returns.
EMI Calculator
Calculate loan EMI, total interest and total repayment.
FD Calculator
Estimate the maturity value of your fixed deposit.
PPF Calculator
Project your Public Provident Fund corpus and interest.
CAGR Calculator
Measure the annual growth rate of your investments.
GST Calculator
Add or remove GST and split CGST and SGST amounts.
Income Tax Calculator
Compare old vs new regime tax on your salary income.
Everyday Tools
Frequently asked questions
What is RupayaTools?
RupayaTools is a free website offering 19 online calculators built for India. It covers salary tools (CTC, in-hand pay, gratuity, HRA), construction estimators (concrete, bricks, cement, project cost) and finance tools (SIP, EMI, FD, PPF, CAGR, GST, income tax), plus handy utilities like an age calculator and a number-to-words converter.
Is RupayaTools really free?
Yes. Every calculator on RupayaTools is completely free to use, with no limits, no premium tiers and no hidden charges. There is also no sign-up — just open a tool and start calculating.
Is my data private?
Yes. All calculations happen in your browser on your own device. We do not ask for personal details, set no cookies, run no analytics and store nothing on our servers — because there is nothing to send. Read our privacy policy for details.
How accurate are the calculators?
Our tools use standard formulas and Indian conventions, such as statutory gratuity rules, GST slabs and income tax regimes. Results are estimates meant for planning. For big decisions, always verify with a qualified professional — see our disclaimer.
Do I need to sign up or download anything?
No. RupayaTools is a plain static website. There are no accounts, no apps to install and no downloads. It works in any modern browser on phones, tablets and computers.
Can I use RupayaTools on my mobile phone?
Yes. The site is designed mobile-first, so every calculator works smoothly on small screens with large, touch-friendly inputs. It is lightweight and loads quickly even on slower connections.