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APR Calculator

Compute the true APR of a loan including fees, plus the monthly payment and total cost.

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APR to APY CalculatorConvert a nominal APR into the effective APY for any compounding frequency.APY to APR CalculatorConvert an effective APY back into the nominal APR for any compounding frequency.Loan-to-Deposit Ratio CalculatorA bank's loans divided by its customer deposits, with the funding gap and what a ratio above 100% really means for liquidity risk.Boat loan calculatorEstimate the monthly payment on a boat loan from the purchase price, down payment, trade-in, sales tax and APR. It works out the amount financed, the monthly payment, the total interest over the term and the total cost, so you can size a marine loan before you sign.Motorcycle loan calculatorEstimate the monthly payment on a motorcycle loan. Enter the price, down payment, any trade-in, sales tax, APR and the term in months, and it returns the amount financed, the monthly payment and the total interest you'll pay.Borrowing capacity calculatorEstimate how much you can borrow from your income (35% debt ratio).Car Loan CalculatorEstimate your monthly car payment, total interest and total cost from the price, down payment, rate and term.EMI calculator (equated monthly instalment)The fixed monthly payment on a loan — principal and interest combined — plus the total interest and total amount over the term. EMI = P·r·(1+r)ⁿ / ((1+r)ⁿ − 1).

APR Calculator works straight from this page — free, instant, nothing to install. You will find it under Loans & credit, with APR to APY Calculator and APY to APR Calculator for the neighbouring cases.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is APR Calculator?

Compute the true APR of a loan including fees, plus the monthly payment and total cost.

When would I actually use this?

Before signing: checking whether the instalment fits the budget, comparing two offers at different rates and terms, and seeing what a shorter term really costs each month.

What is the most common mistake?

Comparing monthly instalments instead of total interest. A longer term always looks cheaper each month and costs more overall — the two figures move in opposite directions.

How is APR Calculator different from APR to APY Calculator?

They sit next to each other but answer different questions. APR to APY Calculator: convert a nominal APR into the effective APY for any compounding frequency. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

APY to APR Calculator is the closest one after this: Convert an effective APY back into the nominal APR for any compounding frequency.

What else is worth having open alongside it?

Loan-to-Deposit Ratio Calculator and Boat loan calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

The amortisation arithmetic is standard and exact; the rate is yours to supply. Lenders add fees, insurance and sometimes a different compounding convention, so treat the result as the loan's own cost, not the offer's APR.

Further reading

All guides →
ComparisonWhat the APR Includes That the Rate Does Not — and Why 6 % Can Beat 7.5 % BackwardsA 6 percent loan with a 3 percent fee and compulsory insurance carries an APR of 10.7 percent and costs $486 more than a 7.5 percent loan with no fees at all. The APR is the figure that catches it.ExplainerThe EMI Formula Explained — and Why a Longer Term Is Mostly a Transfer to the LenderEMI = P·i·(1+i)^n ÷ ((1+i)^n − 1). On $300,000 at 6 percent, doubling the term from 15 to 30 years cuts the payment by 29 percent but multiplies the interest by 2.2 — from $155,683 to $347,515.How-toHow to Pay Off Credit Card Debt: The Minimum Payment Trap in NumbersPaying the minimum on $5,000 at 20 percent takes 40 years and costs $18,500 in interest. A fixed $200 a month clears it in under three years for $1,522. Here is the method.ExplainerMortgage Points: When Buying Down the Rate Actually PaysOne point on a $300,000 loan costs $3,000 and saves $47.93 a month. The naive break-even is 63 months; discounted at 4 percent it is 71. And the number that decides it is not either of those — it is how long you keep the loan.ExplainerA Balloon Loan's Payment Is Small Because the Debt StaysA balloon loan is priced on a long amortisation and repaid on a short one, and the whole instrument lives in that gap. On $250,000 at 6.5%, amortised over 30 years and due at 7, the payment is $1,580.17 and the lump sum still owed is $226,040.61 — 90.4% of what you borrowed.ExplainerThe Two Numbers That Set Your Borrowing CapacityA lender does not decide how much you can borrow. A ratio decides a monthly payment, and an interest rate turns that payment into a principal. On $7,500 of income the two steps give $1,805 and $285,571 — and clearing one $280 debt adds $44,299.