---
title: "Simple Interest Calculator: Interest and Total | MCC"
description: "Enter principal, rate and years to get simple interest and the total. Free, private, runs in your browser."
url: "https://mcc-solutionsnj.com/bookkeeping/simple-interest-calculator"
---

Free tool

# Simple interest calculator

Work out interest on a loan or deposit that does not compound. Enter the principal, the yearly rate and the number of years.

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Principal ($)

Yearly interest rate (%)

Years

Prefer to talk it through? [Take the free books check](/bookkeeping/health-check) or [contact us](/contact).

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## Put this tool on your own site

Free to use. Paste this where you want it to appear. It runs in the visitor's browser, so nothing they enter is sent to us.

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How it works

## How it works

**Simple interest = principal x rate x years.** The total is the principal plus that interest.

FAQ

## About this calculator

**How is simple interest different from compound interest?**

Simple interest is figured only on the original amount. Compound interest is also figured on interest already added.

**Can I use months?**

Yes. Enter the fraction of a year, such as 0.5 for six months.

**Which loans use simple interest?**

Some short-term loans and many auto loans. Check your loan agreement for how interest is calculated.

**Is anything saved?**

No. The math runs in your browser and nothing you enter is sent to us.

**Is this tax or financial advice?**

No. It is a calculator for general information. Check the numbers against your own records, and ask an accountant before you act on them.

Related: [compound interest calculator](/bookkeeping/compound-interest-calculator), [late payment fee calculator](/bookkeeping/late-payment-fee-calculator). See [all free tools](/free-tools). More free tools: [Down payment calculator](/bookkeeping/down-payment-calculator), [Hours and minutes to decimal calculator](/bookkeeping/hours-and-minutes-to-decimal-calculator), [Books Audit Python script](/bookkeeping/books-audit-python-script), or [see all free tools](/free-tools).

Free

### Month-End Close Checklist (PDF)

The five-day close, one page to print. Enter your email and we send a link to confirm it is yours, then the download. We may email you about new toolkits, and every email has an unsubscribe link.

General information, not tax or legal advice. [How we write and check our tools](/editorial-standards).

Do it yourself

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## Want your books and numbers handled?

[Free health check](/bookkeeping/health-check)[Call (908) 444-6373](tel:+19084446373)