ROI Calculator – Starlight Tools

Return on Investment (ROI) Calculator

Enter your investment details to calculate ROI and annualized returns.

Amount Invested:

Amount Returned:

Investment Time:

Use Dates Use Length

From: To:

Calculation Results

Investment Gain: $0.00

ROI: 0.00%

Annualized ROI: 0.00%

Investment Length: 0.00 years

Invested

Profit

Understanding ROI

Return on Investment (ROI) is a performance measure used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments. It is a fundamental calculation in finance and business.

The Formula

The basic formula for ROI is:

ROI = \frac{(Amount Returned - Amount Invested)}{Amount Invested} \times 100

This calculator also provides an annualized ROI, which is useful for comparing investments of different durations. The annualized ROI is calculated using the formula:

Annualized ROI = ({(1 + ROI)}^{\frac{1}{N}} - 1) \times 100

Where N is the investment length in years.