Loan Calculator

Calculate your monthly payment, total interest, and see a full amortization schedule for any loan amount, rate, and term.

$
%

Enter loan details to see results.

Schedule

Amortization schedule.

Enter loan details above to generate the amortization schedule.

Formula

Loan payment formula.

Monthly payment

M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1]

M
Monthly payment
P
Principal (loan amount)
r
Monthly interest rate = annual rate ÷ 12 ÷ 100
n
Total number of monthly payments = years × 12

Example

Worked example.

$20,000 loan at 6.5% for 5 years

P (principal)
$20,000
r (monthly rate)
6.5% ÷ 12 = 0.5417%
n (payments)
5 × 12 = 60
M = 20000 × [0.005417 × 1.005417⁶⁰] / [1.005417⁶⁰ − 1]
M = $391.32 / month

Total paid

$23,479.20

Total interest

$3,479.20

FAQ

Frequently asked questions.

What is the monthly payment on a $30,000 loan?

The monthly payment on a $30,000 loan depends on the interest rate and repayment term. For example, at a 7% annual interest rate over 5 years, the monthly payment is approximately $594. Use our loan calculator above to enter your exact rate and term for a precise figure.

What is the monthly payment on a $100,000 personal loan?

A $100,000 personal loan at 10% APR over 7 years results in a monthly payment of roughly $1,660. Shorter terms reduce total interest paid but increase your monthly obligation. Enter your loan amount, rate, and term in the calculator to see a full payment breakdown.

What is the rule of 78?

The rule of 78 is a method some lenders use to calculate how much interest you have paid at any point during a loan term. It front-loads interest charges, meaning you pay a larger share of the total interest in the early months. This can make early loan payoff more expensive compared to simple-interest loans.

What is the best way to use a loan calculator?

Enter the loan principal (amount borrowed), the annual interest rate (APR), and the loan term in months or years to instantly see your estimated monthly payment and total interest cost. You can also compare scenarios by adjusting the term or down payment to find a repayment plan that fits your budget.

What types of loans can I calculate?

Our loan calculator works for any standard installment loan, including personal loans, auto loans, student loans, and mortgages. Simply input the relevant loan amount, interest rate, and term — the same calculation method applies across all loan types.

How does loan term length affect my payment?

A longer loan term lowers your monthly payment but increases the total interest paid over the life of the loan. A shorter term means higher monthly payments but significantly less interest overall. Use the calculator to compare different terms side by side and find the right balance for your financial situation.

What is an amortization schedule?

An amortization schedule is a complete table showing each monthly payment broken down into the principal and interest portions over the entire loan term. Early payments consist mostly of interest, while later payments apply more toward reducing the principal balance. Reviewing an amortization schedule helps you understand exactly how your loan is paid off over time.

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Last updated: August 8, 2026