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Loan Calculator

Calculate fixed monthly payments and total interest for a conventional amortizing loan.

ResultMonthly payment $3,866.56 · total repaid $231,993.62 · total interest $31,993.62.A fixed-payment estimate that makes the borrowing cost easier to understand.

Visual summary

Loan balance and interest over time

Compare principal and interest, see how each payment interval changes, and follow the projected balance to payoff.

Total repayment

$231,994total repaid
Principal $200,000Interest $31,994

Principal and interest payments

$0$5.7K$11.5KStart30 moYear 5

Payoff projection

$0$100K$200KStart30 moYear 5
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Loan balance and interest over time repayment data
PeriodPrincipal paidInterest paidRemaining balance
Start$0.00$0.00$200,000
3 mo$8,643$2,957$191,357
6 mo$8,773$2,827$182,584
9 mo$8,905$2,694$173,679
Year 1$9,040$2,560$164,639
15 mo$9,176$2,424$155,464
18 mo$9,314$2,286$146,149
21 mo$9,455$2,145$136,695
Year 2$9,597$2,003$127,098
27 mo$9,742$1,858$117,356
30 mo$9,889$1,711$107,467
33 mo$10,038$1,562$97,430
Year 3$10,189$1,411$87,241
39 mo$10,343$1,257$76,898
42 mo$10,499$1,101$66,400
45 mo$10,657$942.89$55,743
Year 4$10,817$782.23$44,925
51 mo$10,981$619.16$33,945
54 mo$11,146$453.63$22,799
57 mo$11,314$285.60$11,485
Year 5$11,485$115.04$0.00

Calculations happen locally in your browser.

How to use this calculator

  1. Enter the amount borrowed, annual interest rate, and whole number of monthly payments.
  2. Review the live result and use Copy result when you need to share it.

How the calculation works

The shared amortization engine converts annual interest to a monthly rate and finds the level payment that reduces the balance to zero.

Formula

Payment = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1)

Step-by-step calculation

  1. Enter the amount borrowed, annual interest rate, and whole number of monthly payments.
  2. The shared amortization engine converts annual interest to a monthly rate and finds the level payment that reduces the balance to zero.
  3. Check the displayed result, then copy it if needed.

Worked example

A $10,000 loan at 5% over 12 months requires an estimated payment of about $856.07 per month.

Risk guidance

Frequently asked questions

Does this model early repayments or fees?

No. It assumes equal monthly payments, a fixed rate, and no fees or extra payments.

Does this tool send my inputs anywhere?

No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.

How should I use the result?

Check that the entered units and values match your situation, especially around dates, breaks, and rounding.

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