APR Calculator Online
Find the true annual percentage rate of a loan once fees and points are folded in, entirely in your browser. Estimates only, not financial advice.
The APR Calculator runs entirely in your browser. The loan amount, fees, rate, and term you enter never leave your device, and results are estimates only, not financial advice.
Open the Loan Calculator
About APR Calculator
The APR Calculator finds the true annual percentage rate of a loan once origination fees, points, and closing costs are folded into the advertised interest rate. Enter the loan amount, upfront fees, nominal interest rate, and term, and it computes the standard monthly payment, then solves for the discount rate that equates those payments to the amount you actually receive after fees. That solved rate, annualized, is your APR — always at or above the nominal rate whenever fees are greater than zero. It also totals the full cost of the loan across every payment plus the fees. Useful for comparing two loan offers that quote different rates and different fees, since APR puts them on the same footing. Everything runs locally in your browser, and these figures are estimates only, not financial advice — always confirm with the lender's official disclosure.
Features
- Solves for true APR from loan amount, fees/points, nominal rate, and term
- Computes the standard amortizing monthly payment on the full principal
- Totals the full cost of the loan across every payment plus upfront fees
- Works with any term length, from short personal loans to 30-year mortgages
- Handles a 0% nominal rate (fee-only cost) correctly
- Validates inputs and flags fees that exceed the loan amount
- One-click copy of a plain-text summary of every result
- Runs entirely in your browser — no loan figures are uploaded
How to use the APR Calculator
- Enter the loan amount you are borrowing
- Enter the upfront fees, points, or closing costs charged
- Enter the nominal (advertised) annual interest rate and the term in months
- Read the monthly payment, true APR, and total cost of the loan
Example
Input
$100k, $3k fees, 6%, 360 mo
Output
APR: 6.28%
Common errors & troubleshooting
- Rate entered as a decimal like 0.06 instead of 6. — Enter the nominal rate as a percentage number, so a 6% rate is typed as 6, not 0.06.
- Fees entered exceed the loan amount and the result stays blank. — Fees and points must be less than the loan amount — the calculator needs a positive net amount you actually receive.
- APR looks identical to the nominal rate even with fees entered. — Check that the fees field actually has a nonzero value; with 0 fees, APR always equals the nominal rate exactly.
- Term entered in years instead of months. — The term field expects months, so a 30-year loan is entered as 360, not 30.
Frequently asked questions
- What does the APR Calculator actually solve for?
- It solves for the monthly discount rate that makes the present value of your standard loan payments equal the amount you actually receive after fees, then annualizes that rate. That annualized rate is the APR.
- Why is APR higher than the nominal interest rate in this calculator?
- The nominal rate only prices the interest on the loan. APR spreads upfront fees and points across the same payment stream, so the effective cost of borrowing rises — the larger the fees relative to the loan, the bigger the gap the APR Calculator shows.
- Can I use the APR Calculator for a 0% financing offer?
- Yes. With a 0% nominal rate the monthly payment is just principal divided by months, but if fees are entered, the APR Calculator still returns a positive APR because the fees are a real cost even with no stated interest.
- Does the APR Calculator include closing costs and points?
- Yes — any upfront dollar amount you enter in the fees field, whether it is discount points, origination fees, or closing costs, is folded into the APR the same way.
- Is the APR from this calculator the same number my lender will disclose?
- It uses the same present-value approach lenders use, but exact disclosed APR can include specific fee categories set by regulation. Treat this as a close estimate, not the final figure — confirm with the lender's official loan disclosure.
- Does the APR Calculator send my loan numbers anywhere?
- No. The APR Calculator runs entirely in your browser. The loan amount, fees, rate, and term you enter never leave your device.
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