ROI Calculator

1. 01Enter the initial investmentType the total amount you put in.
2. 02Enter the final valueType the total value you received back, including the original amount.
3. 03Read the ROIThe return on investment and the net gain or loss update as you type.

• Judge a campaignCompare the return on marketing spend against what it brought in.
• Weigh a purchaseCheck the return on equipment or a course against its cost.
• Compare optionsPut two investments side by side on the same percentage basis.

• A 25% returnInvesting 1,000 and getting back 1,250 is a 250 gain and a 25% ROI.
• Doubling your moneyTurning 1,000 into 2,000 is a 100% ROI.
• A lossInvesting 1,000 and ending with 800 is a negative 20% ROI.

ROI compares what you gained to what you invested: gain = final value - investment, and ROI = gain / investment x 100. The final value is the total returned, so it already includes your original amount.

You enter the initial investment and the final value in the same currency. The tool returns the ROI percentage and the net gain or loss. It assumes the final value is the total received, not just the profit.

Use it for any investment where you know the amount in and the value out. For campaigns, treat spend as the investment and revenue (or profit) as the final value, and be clear which one you used.

A common mistake is entering only the profit as the final value, which double-counts the gain. This ROI is not annualized, so it does not account for how long the money was invested. This is an educational estimate to help you plan and price, not financial, accounting, or tax advice. Check the figures against your own records or a qualified professional before a real decision.

The calculation runs in your browser on your device. Your numbers are never uploaded, stored, or shared, and closing the tab clears everything.

Is the final value the profit or the total?

The total returned, including your original investment. Entering just the profit would double-count the gain.

Is this ROI annualized?

No. It is a simple total return. Two investments with the same ROI can differ a lot if one took much longer.

Can ROI be negative?

Yes. A negative ROI means the final value is below the amount you invested.

How do I use it for marketing?

Use the spend as the investment and the revenue or profit as the final value. Note which one you chose when you compare.

Is my data saved?

No. Everything runs in your browser and nothing you enter is stored.