Calculator

Simple Interest Calculator (2026)

Calculate simple interest on loans, investments or savings in AUD. Enter principal, rate and time to see results instantly.

Formula
I = P × r × t
Estimate updates below
Interest Earned$1,000.00
Step 1

Inputs

The initial amount of money invested or borrowed

Annual interest rate as a percentage

Time period in years

Step 02 · Resultsinstant
Interest Earned

$1,000.00

Total Amount

$11,000.00

Visualisation

Growth Over Time

FAQ

Frequently asked questions