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Jump straight to the niche you need and open the matching calculator page.
Personal Finance & Loans
Finance calculators for loans, savings, taxes, retirement, and long-term planning.
10 toolsTrading & Investing
Trading calculators for risk, sizing, margin, leverage, and options P&L.
10 toolsReal Estate & Mortgages
Property calculators for mortgages, affordability, yield, cash flow, and transaction costs.
10 toolsHealth & Fitness
Health calculators for BMI, BMR, TDEE, protein, hydration, and body composition.
10 toolsCreator, Marketing & SEO
Creator and marketing calculators for CPM, RPM, ROI, CAC, LTV, and ad revenue.
10 toolsFeatured calculators
The highest-value pages for finance, trading, and creator revenue.
EMI Calculator
Estimate your monthly loan installment.
Open calculator →Personal Finance & LoansSIP Calculator
Estimate future value of a monthly systematic investment plan.
Open calculator →Trading & InvestingPosition Size Calculator
Estimate position size from risk and stop-loss distance.
Open calculator →Real Estate & MortgagesMortgage Calculator
Estimate a home-loan monthly payment.
Open calculator →Health & FitnessBMI Calculator
Calculate body mass index from height and weight.
Open calculator →Creator, Marketing & SEOYouTube Earnings Calculator
Estimate earnings from views and RPM.
Open calculator →How SmartCalc helps you make better financial decisions
SmartCalc provides free, browser-based calculators that give instant answers to real financial questions — no signup, no data storage, no ads cluttering the result. Every calculator runs entirely in your browser using standard mathematical and financial formulas, so results appear the moment you enter your inputs.
The site is organised into five subject areas: Personal Finance & Loans (EMI, SIP, tax, retirement, compound interest), Trading & Investing (position sizing, stop-loss, risk-reward, leverage, options P&L), Real Estate & Mortgages (mortgage EMI, rental yield, rent vs. buy, stamp duty, LTV), Health & Fitness (BMI, BMR, TDEE, protein, calorie deficit, body fat), and Creator & Marketing (YouTube earnings, CPM, CAC, affiliate revenue, conversion rate). Each calculator has its own dedicated page with explanations, worked examples, and answers to frequently asked questions.
Why separate pages for each calculator?
Most calculator websites put dozens of tools on a single page, making them slow to load and hard to share. SmartCalc gives each tool its own URL. This means you can bookmark the exact calculator you need, share a direct link with someone, and get targeted results when searching on Google. A page titled "SIP Calculator" with in-depth content about SIP returns, realistic rate assumptions, and step-up SIP mechanics ranks far better in search than a generic "all calculators" page.
Who uses SmartCalc
- Individual investors: Planning SIP amounts, calculating compound interest on lump-sum investments, modelling retirement corpus.
- Home buyers and renters: Comparing mortgage EMI vs. rent, calculating stamp duty, evaluating rental yield before purchase.
- Traders: Calculating position size from risk budget and stop distance, evaluating risk-reward before entering a trade.
- Health-conscious individuals: Tracking BMI, calculating calorie deficit for weight loss, estimating daily protein and water needs.
- Content creators and marketers: Estimating YouTube earnings from views and RPM, calculating CAC and LTV, projecting affiliate revenue.
Accuracy and limitations
All SmartCalc results are estimates based on the inputs you provide and standard financial or mathematical formulas. They are intended for planning and informational purposes. Results do not constitute financial, medical, or legal advice. For important financial decisions — home loans, investment planning, tax filing — confirm your calculations with a qualified professional or your financial institution.