About SmartCalc
Free, private calculators for everyday financial and personal decisions
SmartCalc is a free collection of financial, health, and utility calculators built for anyone who wants quick, reliable estimates without the complexity of spreadsheets or the privacy concerns of cloud-based tools. Everything runs directly in your browser — nothing is ever uploaded or stored on any server.
Private by Design
All calculations run in your browser. No data is ever sent to a server.
Fast & Free
No sign-up, no subscription, no ads. Just instant results.
18 Calculators
From mortgages to BMI, covering personal finance, health, and everyday tools.
Works Everywhere
Fully responsive — use it on desktop, tablet, or mobile.
Available Calculators
Home & Real Estate
- Mortgage
- Home Affordability
Auto
- Car Payment
Investments & Savings
- Investment Growth
- Compound Interest
- Savings Goal
Retirement
- Retirement Planner
Debt
- Loan Payoff
- Student Loan
- Credit Card Payoff
Personal Finance
- Net Worth
- Emergency Fund
- Income Tax Estimator
Health & Fitness
- BMI
- Body Fat %
Tools
- Currency Converter
- Tip & Bill Splitter
- Inflation
Technology
SmartCalc is built with React, TypeScript, Tailwind CSS, and Recharts. Exchange rates are fetched from the Frankfurter API (European Central Bank data).
Feedback
Found a bug or want a new calculator? We'd love to hear from you. Visit our Contact Us page.
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