Smart Calculations
Made Simple
Free online calculators for finance, health, math and everyday decisions — accurate formulas, instant results, zero sign-up.
Every Calculator, One Place
Pick a category or jump straight to the tool you need.
Financial Calculators
View all →SIP Calculator
Estimate the future value of your monthly mutual fund investments, with annual step-up support.
OpenEMI Calculator
Calculate monthly loan instalments with a full amortization schedule.
OpenPPF Calculator
Project your Public Provident Fund maturity amount, interest earned, and year-by-year growth — completely tax-free under Section 80C.
OpenFD Calculator
Find the exact maturity value of your fixed deposit with bank-standard quarterly compounding.
OpenRD Calculator
See how disciplined monthly deposits grow with bank-standard quarterly compounding.
OpenGST Calculator
Add GST to a price or work backwards from a GST-inclusive amount — with instant CGST/SGST split.
OpenIncome Tax Calculator
Estimate your tax under the New Tax Regime — with the ₹75,000 standard deduction, Section 87A rebate, marginal relief, and cess all applied automatically.
OpenCompound Interest Calculator
Watch your money grow on itself — choose any compounding frequency and see the year-by-year breakdown.
OpenFitness & Health Calculators
View all →BMI Calculator
Check your Body Mass Index and WHO weight category instantly.
OpenBMR Calculator
Find the calories your body burns at complete rest — the foundation of every diet and fitness plan.
OpenCalorie Calculator
Get personalised calorie targets for losing, maintaining, or gaining weight — based on your TDEE.
OpenBody Fat Calculator
Estimate your body-fat percentage with just a tape measure — using the validated U.S. Navy method.
OpenMath Calculators
View all →Percentage Calculator
Three tools in one — percent of a number, percentage of a total, and percent change.
OpenAge Calculator
Your precise age in years, months, and days — plus days until your next birthday.
OpenFraction Calculator
All four fraction operations with simplified results, mixed numbers, and decimals.
OpenWhy Use SmartCalculations for Your Calculations?
In an era where precision matters most, SmartCalculations provides a seamless interface for your daily computational needs. Whether you are planning your financial future with a Mutual Fund SIP Calculator, estimating tax with the FY 2025-26 Income Tax Calculator, or monitoring fitness goals with a BMI Calculator, our tools deliver instant, accurate, and actionable insights.
Accuracy Guaranteed
Every formula is cross-verified with standard financial and medical references — bank EMI math, WHO BMI categories, government tax slabs.
Built for Search & AI
Structured data and clear explanations make answers easy to find in Google, AI Overviews, ChatGPT, Gemini, and Claude.
Wealth Planning
Visualize growth with interactive charts, year-wise projections, and amortization schedules.
Health Monitoring
Track BMI, BMR, calories, and body fat with personalized recommendations grounded in validated equations.
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Frequently Asked Questions
Are these calculators free to use?
Yes, all calculators on SmartCalculations are 100% free and do not require any registration or personal data.
How accurate are the calculators?
Every calculator uses the standard, industry-accepted formula — the same reducing-balance EMI formula banks use, the Mifflin-St Jeor BMR equation, FY 2025-26 income-tax slabs, and so on. Results match bank and government calculators.
Is my data stored anywhere?
No. All calculations run instantly in your browser. Nothing you type is sent to or stored on our servers.
Which calculators are available?
Finance: SIP, EMI, PPF, FD, RD, GST, Income Tax, and Compound Interest. Fitness: BMI, BMR, Calorie, and Body Fat. Math: Percentage, Age, and Fraction calculators.