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Free online calculators & AI-powered math assistant

Instant answers for EMI, loans, GST, salary, work hours, dates, and BMI — with transparent formulas, worked examples, and smart AI step-by-step guidance.

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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?

EMI calculator ₹5,00,000 · 9% · 36 months

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

From question to answer in three steps

  1. Find your calculator

    Search by name or task, or browse one of six categories.

  2. Enter your numbers

    Fill in a few clearly labelled fields — sensible defaults are already set.

  3. Get your result

    Copy the answer, then check the formula and worked example below it.

From the blog

Guides that explain the maths

Plain-English walkthroughs you can pair with any calculator.

FAQ

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Can’t find what you’re looking for? Visit the full FAQ or contact us.

Yes. Every calculator on CalcTap is 100% free to use with no account required. For users who want AI step-by-step explanations, custom formula generation, image calculations, and history, we also offer flexible free and paid AI subscription plans.
CalcTap AI is an intelligent calculation companion that understands plain-language questions, explains results step-by-step, builds formulas, and extracts numbers from images. Free accounts include daily queries, and Pro and Premium plans offer higher quotas and advanced features.
CalcTap AI never guesses numbers. It reads your prompt or image, maps it to CalcTap’s verified calculation engine and standard formulas, and computes exact answers before explaining them in plain language.
Calculations run in your browser or secure private session. For AI queries, numbers are processed securely to generate your step-by-step result and are never sold or used for public training.
Yes. Every tool and AI feature is designed mobile-first, with large inputs and instant results that work on phones, tablets, and desktops.

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