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Hazuu Tools

Loan Calculator

Calculate loan payments, total interest, and payoff date for any loan type.

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Loan Details

Loan Amount
$
Interest Rate (% per year)
%
Loan Term
Payment Frequency
Start Date (optional)

Used to estimate your loan payoff date.

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Loan Summary

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Enter your loan details and click Calculate
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About Loan Calculator

The Loan Calculator computes your regular payment amount, total interest charged, and total repayment cost for any fixed-rate loan. Enter the loan principal, annual interest rate, and term length, then choose how often you want to pay — monthly, bi-weekly, or weekly — and the tool instantly applies the standard amortization formula to show exactly what each payment covers and how the numbers add up over the full term.

Borrowers use this tool before signing a loan agreement to verify the numbers on an offer letter, to compare a shorter versus longer term, or to see how switching from monthly to bi-weekly payments changes the total outlay. Because the calculator covers personal loans, auto loans, student loans, and home equity loans equally well, it is a single stop for any fixed-rate borrowing scenario rather than a product-specific tool.

All calculations run entirely in your browser with no data sent to any server. There are no accounts, no fees, and no limits on how many scenarios you can model. Sensitive financial figures such as loan amounts and rates stay on your device and are never logged or stored.

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Key Features

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Amortization-accurate payments

Uses the standard amortization formula (P * [r(1+r)^n] / [(1+r)^n - 1]) to produce the same payment figure a lender would quote, not a rough estimate.

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Three payment frequencies

Switch between monthly, bi-weekly, and weekly schedules to see how the payment amount and payment count change without touching the other inputs.

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Full cost breakdown

Displays principal, total interest charged, total repayment amount, and number of payments side by side so you can see the true cost of the loan at a glance.

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Payoff date calculation

Enter an optional start date and the tool projects the exact calendar date your final payment is due, giving you a concrete repayment target.

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Years or months term input

Enter the loan term in years for typical consumer loans, or switch to months for shorter-duration financing — no manual conversion needed.

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Private and instant

Every calculation happens locally in your browser the moment you click Calculate. No server call, no sign-up, and no wait.

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How to Use

01

Enter Loan Amount

Input the total amount you plan to borrow. This is the principal balance of your loan before any interest is applied.

02

Set Interest Rate & Term

Enter the annual interest rate and choose your loan term in years or months. The calculator uses the standard amortization formula to compute payments.

03

Choose Payment Frequency

Select how often you want to make payments — monthly, bi-weekly, or weekly. Bi-weekly and weekly options show you how more frequent payments affect your schedule.

04

Calculate

Click Calculate to see your payment amount, total interest, total cost, payoff date, and a complete payment breakdown summary.

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Example

A $15,000 personal loan at 6% annual interest over 3 years with monthly payments. The amortization formula gives a fixed monthly payment of $456.33, and the breakdown shows exactly how much of the $16,427.85 total repayment is interest.

Loan inputs
Loan Amount:        $15,000.00
Annual Rate:        6.00%
Term:               3 years (36 months)
Payment Frequency:  Monthly
Calculated results
Monthly Payment:    $456.33
Total Principal:    $15,000.00
Total Interest:     $1,427.85
Total Repayment:    $16,427.85
Number of Payments: 36
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Common Use Cases

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    Checking a lender's offer letter

    Lenders sometimes quote the payment without showing the total interest. Plug in the principal, rate, and term to verify their figure and calculate the full cost before you sign.

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    Comparing loan terms side by side

    Run the same loan amount at 3 years versus 5 years to see how a longer term lowers your monthly payment but increases the total interest you pay over the life of the loan.

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    Budgeting for a new car purchase

    Enter the financed amount after your down payment, the dealer's quoted APR, and the loan term to confirm whether the monthly payment fits your budget before visiting the dealership.

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    Planning student loan repayment

    Model your post-graduation repayment by entering the total balance, your servicer's interest rate, and the standard 10-year term to understand what you owe each month from day one.

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    Deciding between bi-weekly and monthly payments

    Some lenders offer bi-weekly payment programs. Use the frequency selector to compare the per-payment amount and total payments under each schedule for the identical loan.

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Frequently Asked Questions

How is the loan payment calculated? expand_more
The payment is calculated using the standard amortization formula: Payment = P * [r(1+r)^n] / [(1+r)^n - 1], where P is the loan principal, r is the monthly interest rate, and n is the total number of monthly payments. For bi-weekly and weekly frequencies, the monthly payment is converted proportionally.
How does payment frequency affect total cost? expand_more
The payment frequency changes how often you make payments but the total cost remains based on the same monthly amortization calculation. Bi-weekly payments divide the monthly amount into 26 payments per year, and weekly into 52 payments per year, spreading the cost more evenly throughout the year.
What is amortization? expand_more
Amortization is the process of paying off a loan through regular scheduled payments over time. Each payment covers both principal (the original amount borrowed) and interest (the cost of borrowing). Early in the loan term, a larger portion goes to interest, while later payments put more toward reducing the principal balance.
Can I use this for any type of loan? expand_more
Yes, this calculator works for any fixed-rate loan including personal loans, auto loans, student loans, home equity loans, and more. It assumes a fixed interest rate with level payments over the full term. It does not account for variable rates, balloon payments, or other specialized structures.
How is the payoff date determined? expand_more
The payoff date is calculated by adding the total loan term (in months) to the start date you provide. If no start date is entered, the payoff date section will prompt you to set one. This gives you a clear target date for when your loan will be fully repaid.
How is this Loan Calculator different from the Mortgage Calculator? expand_more
The Mortgage Calculator is designed specifically for home purchases and includes fields for property tax, homeowner's insurance, and PMI that make up the full PITI payment. This Loan Calculator covers any general-purpose fixed-rate loan — personal, auto, student — where you only need principal and interest without the extra housing costs. Use the Mortgage Calculator when buying a home; use this one for everything else.
Does the calculator show an amortization schedule? expand_more
The current view shows a summary breakdown: principal, total interest, total repayment, and number of payments. It does not generate a full period-by-period amortization schedule listing each payment individually. For a detailed schedule showing the interest and principal split on each payment, a dedicated amortization schedule tool is better suited.
What happens if I enter 0% interest? expand_more
A 0% interest rate is valid. When the rate is zero the formula simplifies to dividing the principal equally across all payments, so each payment is exactly Principal / Number of Payments with no interest component added.