Free financial calculators that just work

Loans, savings, debt, investing and retirement — clear answers in seconds. No sign-up, no spreadsheets, no fluff. Everything runs privately in your browser.

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🔒 100% private — nothing leaves your device ⚡ Instant results 📱 Works on any device

All calculators

Pick a tool to get started — each one explains the math and answers common questions.

Loans

Loan / EMI Calculator

Monthly payment, total interest, and a full amortization schedule.

Loans

Mortgage Affordability

How much house can you actually afford on your income?

Loans

Car Loan Calculator

Auto loan payments including taxes, fees and trade-in.

Investing

Compound Interest Calculator

See how money grows with regular contributions over time.

Investing

FIRE / Retirement Calculator

When can you retire? Find your financial-independence number.

Saving

Savings Goal Calculator

How much to save each month to hit a target by a deadline.

Debt

Debt Payoff Calculator

Snowball vs avalanche — see which clears debt faster.

Debt

Credit Card Payoff

How long to clear a card balance and the interest cost.

Money

Inflation Calculator

What your money will be worth after inflation.

Income

Freelancer Rate Calculator

Turn a target salary into the hourly rate you must charge.

Why CalcPenny?

Most money calculators are buried in ads, demand your email, or hide how they reached a number. CalcPenny is the opposite: every tool is free, loads fast, and shows the formula and assumptions behind the result so you can trust it.

Private by design. Calculations happen in your browser. We never see or store your numbers.
Genuinely useful. Real outputs — amortization schedules, payoff timelines, growth charts — not just a single figure.
Plain-English explainers. Each page teaches the concept so you understand the result, not just read it.

CalcPenny provides general information and estimates only and is not financial advice. Always confirm important decisions with a qualified professional.