What does the Interest Calculator work out?

Simple or compound interest on a balance. It is one of the Money & Finance tools on Mondo Knows.

How is the Interest Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Interest Calculator

Simple or compound interest on a balance. Use the free interest calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Principal

Annual rate

Time

years

Interest type

Mondo says

Interest earned

$1,576.25

Final balance$11,576.25

Principal$10,000.00

MethodCompound (annual)

Interest Calculator: common questions

What does the Interest Calculator work out?: Simple or compound interest on a balance. It is one of the Money & Finance tools on Mondo Knows.
How is the Interest Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo also knows

Compound Interest CalculatorGrowth with compounding and optional regular deposits.💰 Money & Finance Simple Interest CalculatorInterest that never compounds, straight from the formula I = P r t.💰 Money & Finance Savings CalculatorHow a savings balance grows with regular deposits.💰 Money & Finance Interest Rate CalculatorFind the rate hiding in a loan's payment and term.💰 Money & Finance

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.