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📋 APR Calculator

Find the true Annual Percentage Rate of any loan. Enter the principal, interest rate, fees and term to see the real cost of borrowing — all computed locally in your browser.

Loan principal

Nominal interest rate (%)

Up-front fees

Loan term (months)

What is this tool?

The Annual Percentage Rate, or APR, is the single number that tells you the true yearly cost of borrowing money. Unlike the nominal interest rate quoted by a lender, the APR folds in additional charges such as origination fees, closing costs, discount points and other one-time expenses, so it gives you a much more honest picture of what a loan will actually cost over its full term. Comparing loans by their headline interest rate alone is one of the most common — and most expensive — mistakes borrowers make. A mortgage at 6.5 percent with two thousand dollars in fees can easily be more expensive than one at 6.8 percent with no fees, and only the APR reveals that. Regulators in many countries require lenders to disclose the APR for exactly this reason: it puts every loan on the same scale so you can compare apples to apples. This APR calculator lets you enter the loan principal, the nominal interest rate, any up-front fees, and the loan term in months. It then computes the APR using the standard regulatory formula, along with the total interest paid and the total cost of the loan including fees. Every calculation happens in your browser, so your financial details never leave your device.

How it works

The APR is calculated with the formula APR = ((Interest + Fees) / Principal) × (1 / term in years) × 100. First the tool works out the total dollar interest over the life of the loan using the simple-interest method: Interest = Principal × Rate × Years. It adds any fees you entered, then divides the combined cost by the principal and scales it to an annual rate by dividing by the term in years. This simplified APR formula gives a transparent, easy-to-understand figure that is widely used for quick comparisons and consumer education. It does not compound monthly like a true actuarial APR, so for very long loans the number may differ slightly from the figure on a formal loan estimate, but it is perfect for side-by-side shopping. The tool also displays the total interest alone and the total of all payments (principal plus interest plus fees) so you can see exactly where your money goes.

Typical APR Ranges by Loan Type

Different loan products carry very different APRs. The ranges below reflect common US market rates; your individual offer depends on your credit score, loan term and the lender.

Loan Type	Typical APR Range	Common Term
Mortgage (30-year fixed)	6.0% – 7.5%	15 – 30 years
Auto loan (new car)	5.0% – 8.0%	3 – 7 years
Auto loan (used car)	7.0% – 12.0%	3 – 6 years
Personal loan (unsecured)	9.0% – 36.0%	1 – 7 years
Credit card	18.0% – 29.99%	Revolving
Payday loan	300% – 650%	2 – 4 weeks

Note: APR ranges are approximate US averages and vary by lender, borrower credit profile and market conditions. Payday loan APRs are exceptionally high because fees on short-term borrowing annualise steeply.

APR vs Interest Rate — Key Differences

Many borrowers confuse the interest rate with the APR. This table highlights what each figure includes and when to use it.

Feature	Interest Rate	APR
What it measures	Cost of borrowing the principal only	Total yearly cost including fees
Includes origination fees?	No	Yes
Includes closing costs?	No	Yes
Includes discount points?	No	Yes
Typical relationship	Lower or equal	Equal to or higher than the rate
Best used for	Understanding the raw borrowing cost	Comparing loan offers side by side
Regulatory disclosure (US)	Quoted in advertising	Required on the Loan Estimate form (TILA)

Note: Under the US Truth in Lending Act (TILA), lenders must disclose the APR so consumers can compare the true cost of different loan offers on a like-for-like basis.

How to use

Enter the loan principal (the amount you are borrowing).
Enter the nominal annual interest rate as a percentage.
Enter any up-front fees (origination, closing costs, points, etc.).
Enter the loan term in months.
Click Calculate to see the APR, total interest and total cost.

Frequently Asked Questions

What is the difference between APR and interest rate?

The interest rate is the cost of borrowing the principal alone, expressed as a yearly percentage. The APR includes the interest rate plus fees and other one-time charges, so it is always equal to or higher than the nominal rate and gives a truer picture of total borrowing cost.

Why is my APR higher than the quoted rate?

Because the APR adds fees such as origination charges, closing costs and discount points on top of the interest. The shorter the loan term, the bigger the impact of those up-front fees on the annualised rate, which is why APRs on short-term loans can look surprisingly high.

Does the calculator account for compounding?

This calculator uses a simplified non-compounding APR formula suitable for quick comparisons and consumer education. For a formal actuarial APR that compounds monthly, use the figure on your lender’s official loan estimate. The relative ranking between loans will be the same either way.

Can I set the fees to zero?

Yes. If you enter zero fees, the APR will equal the nominal interest rate, which is a good sanity check that the tool is working correctly. Many online lenders and credit unions advertise no-fee loans, so this is a realistic scenario.

This tool is for informational purposes only and does not constitute financial advice. Consult a qualified financial professional for advice specific to your situation.

Tips & Advice

When comparing loan offers, always ask each lender for the APR — not just the rate — because that is the only number that includes fees and puts every offer on the same footing. A difference of just 0.25 percent in APR can add thousands of dollars over a 30-year mortgage, so it is worth shopping around. Watch out for loans with low rates but high fees: a 5,000-dollar origination fee on a 200,000-dollar loan effectively adds about 2.5 percent to your borrowing cost in the first year alone. Shorter-term loans magnify the impact of fees on the APR, so if you are choosing between a 15-year and a 30-year mortgage, compare the APRs separately for each term. Remember that adjustable-rate loans may advertise a low introductory APR that rises later, so always ask what the APR would be after the initial fixed period ends.

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