Calculators
8 free tools · 100% client-side
Fast, accurate online calculators for loans, EMI, SIP returns, GST, discounts, percentages, age, and BMI — with detailed breakdowns, free and private.
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Most-used Calculators
EMI Calculator
Sliders for amount, rate and tenure — your EMI, total interest, and a full year-by-year amortization table update as you move them.
GST Calculator
Both directions of GST in one tool: add tax to a base price or pull the tax out of an inclusive price, with the CGST/SGST halves ready for your invoice.
SIP Calculator
Watch compounding do its work: future value, wealth gained, and a year-by-year growth table for any monthly investment plan.
All 8 Calculators
EMI Calculator
Sliders for amount, rate and tenure — your EMI, total interest, and a full year-by-year amortization table update as you move them.
Loan Calculator
Beyond the monthly payment: total interest, processing fees, and a payoff schedule that shows what the loan really costs over its life.
SIP Calculator
Watch compounding do its work: future value, wealth gained, and a year-by-year growth table for any monthly investment plan.
GST Calculator
Both directions of GST in one tool: add tax to a base price or pull the tax out of an inclusive price, with the CGST/SGST halves ready for your invoice.
Discount Calculator
What you'll actually pay: single or stacked discounts, optional tax on top, and the honest combined percentage — 20% + 10% is 28%, not 30%.
Percentage Calculator
The three percentage questions everyone asks — % of a number, X as a % of Y, and % change — answered instantly with the reasoning visible.
Age Calculator
Calendar-accurate age — years, months, days, the weekday you were born, and how long until the next cake.
BMI Calculator
BMI with context: your number, the WHO category it lands in, the healthy range for your height, and the distance to it — metric or imperial.
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Calculators that show their work
A result you can't verify is a guess with confidence. Every calculator here pairs the headline number with its anatomy: the EMI and Loan calculators include a year-by-year amortization table showing principal, interest, and balance; the SIP calculator charts invested-versus-value growth annually; the GST calculator splits CGST/SGST and handles the reverse (tax-inclusive) direction correctly; the discount calculator exposes the true combined percentage of stacked offers. The formulas are stated openly in each FAQ — standard reducing-balance EMI, annuity-due SIP futures, WHO BMI ranges — so any figure can be checked by hand.
Inputs are sliders and live fields: drag the interest rate and watch total interest move, extend the SIP horizon and see compounding bend the curve. Nothing you enter — loan amounts, salaries, health metrics — leaves your browser, and there are no accounts, quotes, or lead-generation forms behind the results.
Financial, everyday, and health math in one place
The finance set covers borrowing (EMI, total loan cost with fees) and investing (SIP projections with conservative-assumption guidance). The everyday set handles commerce: GST in both directions with rate presets, stacked discounts with tax, and the three percentage problems everyone re-derives — X% of Y, X as a percentage of Y, and percent change. The personal set computes calendar-exact age (with next-birthday countdown) and BMI in metric or imperial with the healthy range for your height. Each links to its neighbors, because real questions chain: a discount feeds a GST check feeds a budget.
Help
Frequently asked questions
Everything you need to know about the Calculators.
01How accurate are these calculators?
Exact to the formula: EMI uses the standard reducing-balance equation banks use, SIP uses annuity-due compounding, GST divides correctly for tax-inclusive amounts, and age counts real calendar months including leap years. The unit tests assert textbook values — 10L at 8.5% for 20 years is ₹8,678 — and the breakdowns let you verify any row.
02Why don't the calculators show a currency symbol?
Deliberately — the math is identical in any currency, so results display as clean locale-formatted numbers you can read as rupees, dollars, or euros. Rates and conventions that are region-specific (like India's CGST/SGST split) are labeled where they apply.
03Is anything I enter stored or shared?
No. Calculations run instantly in your browser as you type; there's no server call, no analytics on entered values, and no signup. Close the tab and the numbers are gone.
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