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Practical guides behind the numbers
How Much Money Do You Need to Retire in India? A ₹70 Lakh, ₹30,000-a-Month Case Worked Through
Age 56, ₹70 lakh saved, ₹30,000 a month, own flat, no loans, retiring at 60: the 25x target is ₹1.14 crore, ₹70 lakh at 8% reaches ₹95 lakh, and a ₹31,000 SIP for four years closes the gap. The SWP test at 6, 7 and 8%, and the corpus-by-age table.
PPF Maturity in 15 Years: ₹1.5 Lakh a Year Becomes ₹40.7 Lakh, and Why the Date You Deposit Changes It
₹1.5 lakh a year in PPF for 15 years at 7.1% matures at ₹40,68,209 if deposited each April, ₹39,44,599 if deposited monthly on the 5th, and ₹38,20,989 if deposited every March. The 5th-of-month rule, the extension blocks, and the rules on loans and withdrawals.
SIP vs Lumpsum: The Same ₹12 Lakh Ends ₹14 Lakh Apart, and When Each One Wins
₹12 lakh at 12% for ten years grows to ₹37.3 lakh as a lumpsum and ₹23.2 lakh as a ₹10,000-a-month SIP. The gap is not a flaw in SIPs; it is the same money arriving later. When each wins, the falling-market case for SIP, and what to do with a bonus.
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Explore All 148 ToolsExplore 148 ToolsWhy AllSmartCalculators?
AllSmartCalculators is a free online toolkit built for everyday Indian needs: home loan EMIs, SIP returns, GST on a bill, GPA conversions, BMI checks, age in days, percentage of a number, and more of the sums you do every week. Every calculator works directly in your browser, on phone or laptop, with no signup, no app install and no hidden charges.
Finance, Health, Math & Education
The site covers Finance, Health, Math and Education. Whether you need to work out the EMI on a Rs 35 lakh home loan, compare the old and new income tax regime, plan a 15-year SIP for your child's college, check BMI for an Indian adult, work out the GST on a bill or calculate your GPA for the semester, there is a dedicated tool for it.
Built for Accuracy and Privacy
Formulas are based on trusted sources: RBI for interest computations, GSTN for tax slabs, WHO for BMI bands, and SEBI guidance for mutual fund return assumptions. Inputs you type stay on your device for the calculation itself, and we follow privacy practices that line up with Google Consent Mode v2, GDPR and India's DPDP Act.
How to Get Started
Pick a category from the menu, open the calculator you need, enter your numbers, and read the result along with the step-by-step working shown below. Bookmark your most-used tools (EMI, SIP, BMI, percentage) so you can come back in one click.
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There is no paywall, no premium tier and no spammy email funnel. The site is funded by unobtrusive ads, which keeps the calculators free for students, salaried professionals, parents and small business owners across India. Spot an error or want a new calculator added? Email us at allsmartcalculators@gmail.com and we'll take a look.