Finance Calculators
Loans, EMI, mortgages, savings & investing
- Loan Calculator
- EMI Calculator
- Mortgage Calculator
- Investment Calculator
- Savings Calculator
- Retirement Calculator
- Credit Card Payoff Calculator
- GST Calculator
19 free calculators · AI smart assistant · Pro subscriptions
Instant answers for EMI, loans, GST, salary, work hours, dates, and BMI — with transparent formulas, worked examples, and smart AI step-by-step guidance.
Most used
The tools visitors reach for most — for loans, tax, pay, health, and everyday maths.
Calculate your monthly EMI, total repayment, and interest for any fixed-rate loan, with tenure in months as most Indian lenders quote it.
Work out your monthly mortgage payment from home price, down payment, rate, and term — plus the total interest over the loan.
See how compound growth builds your portfolio from a lump sum, monthly contributions, or both.
Enter your balance, APR, and monthly payment to see how long payoff takes and how much interest you will pay.
Find a percentage of a number, what percent one value is of another, or the percentage change between two values.
Add GST to a base price or remove it from an inclusive total, with 5%, 12%, 18%, 28%, or a custom rate.
Add your start time, end time, and break minutes to get total hours worked — including overnight shifts.
Calculate your BMI in metric or imperial units and see which WHO weight category it falls into.
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Jump straight to the right group of tools — no scrolling through an unsorted list.
Loans, EMI, mortgages, savings & investing
Percentages, change & ratios
GST, payroll, overtime & work hours
Age, date gaps, business days & durations
BMI & body metrics
Time zones, hourly & salary conversions
Why CalcTap
A number is only useful if you trust it. Every CalcTap tool explains the formula it uses, walks through a worked example, and is honest about what it doesn’t cover.
Answers appear the moment you press Calculate — no page reloads, no waiting.
Ask in plain English, generate custom formulas, and get step-by-step explanations.
See the exact formula, a worked example, and common mistakes to avoid.
Large inputs and tap targets that work comfortably on any screen size.
CalcTap AI Subscription
Describe what you need, like a loan, a tax rate, or a custom formula. CalcTap AI picks the right calculator, computes exact results using verified formulas, and explains every step. Free tier included daily, with Pro & Premium subscriptions for unlimited calculation power.
What is the monthly EMI on a ₹5,00,000 loan at 9% for 3 years?
Monthly EMI
₹15,900
Your EMI is ₹15,900 a month. Over 3 years you repay ₹5,72,395 in total, of which ₹72,395 is interest.
How it works
Search by name or task, or browse one of six categories.
Fill in a few clearly labelled fields — sensible defaults are already set.
Copy the answer, then check the formula and worked example below it.
From the blog
Plain-English walkthroughs you can pair with any calculator.
Have you ever filled out a form that asked for your age in years, months, and days? Most of us know our age in years, but finding the exact number of months and days can take a little more effort. Subtracting your birth year from the current year does not always give the right answer because your birthday may not have...
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Financial stability starts with a cash buffer that can survive any short-term crisis. Here is how to calculate the right size for your emergency fund and which account types offer the best rates.
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Paying the minimum on your credit card feels manageable — until you realize you could be paying it for a decade. Here is the math behind the trap and the strategies that actually work.
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