Does this account for time?

No. This is simple ROI, not annualised. Two investments with the same ROI over different periods are not equally good — treat it as a basic ratio.

Is this financial advice?

No. It is a transparent arithmetic calculation for comparison only, not financial advice.

ROI (Return on Investment) Calculator

The ROI calculator expresses a net profit as a percentage of the amount invested — a simple, standard way to compare returns. It is an arithmetic ratio, not investment advice.

The formula

ROI % = net profit ÷ amount invested × 100. A negative net profit gives a negative ROI (a loss).

Worked example

A $1,500 gain on a $10,000 investment is a 15% ROI.

Frequently asked questions

Does this account for time?: No. This is simple ROI, not annualised. Two investments with the same ROI over different periods are not equally good — treat it as a basic ratio.
Is this financial advice?: No. It is a transparent arithmetic calculation for comparison only, not financial advice.

Calculator

Break-Even Point Calculator

The break-even calculator finds how many units you must sell to cover your fixed costs, given a unit price and...

Open calculator → Calculator

Markup Calculator

The markup calculator sets a selling price from a unit cost and a markup percentage, and shows the resulting p...

Open calculator → Calculator

Profit Margin Calculator

The profit margin calculator turns a unit cost and selling price into the profit per unit, the margin percenta...

Open calculator →