---
title: "Loan Calculator: Free Online Tool with Guide & FAQs | ShoutingNow"
description: Work out your fixed monthly payment, then model weekly or monthly extra payments, upfront fees, and one-time balloon or dated lump sums.
url: "https://shoutingnow.com/tools/loan-calculator/"
image: "https://shoutingnow.com/wp-content/uploads/2026/07/shoutingnow-preview-scaled.webp"
---

# Loan Calculator

Start with your fixed monthly payment, then model weekly or monthly extra payments, upfront fees, and a one-time balloon or dated lump sum. Check the payoff date, total interest, and a month-by-month amortization schedule.

## How to use this loan calculator

1. Pick a currency symbol for display. This does not convert exchange rates.
2. Enter the loan amount, annual interest rate, and term in years and months.
3. Set the loan start date so the tool can estimate your payoff month.
4. If it applies, add extra payments (weekly, monthly, quarterly, half-yearly, or yearly), extra fees, or a one-time balloon payment at maturity or on a date you choose.
5. Click Calculate and your monthly payment, totals, effective annual rate, and amortization tables all update together.

Already know your monthly payment and just want to know *how long* until it is paid off? Use the [Loan Payoff Calculator](https://shoutingnow.com/tools/loan-payoff-calculator/) instead. Want a schedule-focused view with the same extra-payment options? Try the [Amortization Calculator](https://shoutingnow.com/tools/amortization-calculator/).

## Loan payment formula

Fixed-rate installment loans amortize the standard way: each month you pay off accrued interest first, then whatever is left chips away at principal. The level monthly payment that clears the balance in *n* months works out to:

**P = principal, r = monthly rate (annual ÷ 12), n = number of monthly payments**

### Worked example

Take a $100 loan at 12% annual interest for 1 year, so 12 monthly payments:

- Monthly payment ≈ $8.88
- Total repaid ≈ $106.62
- Total interest ≈ $6.62

Add a $5 monthly extra payment and the term shrinks along with total interest. The schedule table shows you exactly when the balance hits zero.

### Additional payment frequencies

You can enter extra amounts as weekly, monthly, quarterly, half-yearly, or yearly. The calculator converts whichever frequency you pick into an equivalent monthly amount and applies it alongside your regular payment.

## Examples and use cases

### Real-world use cases

- Personal loan comparison: A borrower models $15,000 at 8% over 3 years against the same loan over 5 years to see how the term length changes total interest paid.
- Mortgage extra payments: A homeowner adds $150 a month to a 30-year loan to preview the years saved and interest avoided before committing to it.
- Auto refinance check: Someone compares their current $320 payment on a 6-year note against a refinanced rate and shorter term on the same principal.

### Related tools

For long-term savings growth with compounding, try the [Compound Interest Calculator](https://shoutingnow.com/tools/compound-interest-calculator/). If you just need simple interest without amortization, use the [Simple Interest Calculator](https://shoutingnow.com/tools/simple-interest-calculator/).

## Frequently Asked Questions

### How is the monthly loan payment calculated?
The [Loan Calculator](https://shoutingnow.com/tools/loan-calculator/) runs standard amortization math: monthly rate equals annual rate divided by 12, then payment equals P × r(1+r)n ÷ ((1+r)n − 1). Any extra payments get layered on top each period.

### What additional payment frequencies are supported?
You can pick weekly, monthly, quarterly, half-yearly, or yearly, and each amount gets converted into an equivalent monthly extra that sits alongside your regular payment in the schedule.

### What does "add to loan?" mean for extra fees?
Check it and the fee gets folded into the principal before payments are calculated, essentially financing the fee into the loan. Leave it unchecked and the calculator ignores fees entirely, so you would pay those separately.

### Balloon vs at-date one-time payment?
A **balloon** payment lands on the final scheduled payment of the term, while an **at date** payment hits whatever calendar month you pick, which can shave time off the payoff if it lands earlier.

### How do I find how long until my loan is paid off?
Plug your remaining balance and monthly payment into the [Loan Payoff Calculator](https://shoutingnow.com/tools/loan-payoff-calculator/). Want the full schedule with extras included? The [Amortization Calculator](https://shoutingnow.com/tools/amortization-calculator/) covers that.

### Does this match my lender's statement exactly?
Not necessarily. It uses monthly compounding and standard rounding, but banks sometimes apply different day-count rules, fees, or payment dates, so treat the results as planning figures rather than a legal payoff quote.

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