Return on Investment (ROI) Calculator

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In finance, Return on Investment, usually abbreviated as ROI, is a common, widespread metric used to evaluate the forecasted profitability on different investments. Before any serious investment opportunities are even considered, ROI is a solid base from which to go forth. The metric can be applied to anything from stocks, real estate, employees, to even a sheep farm; anything that has a cost with the potential to derive gains from can have an ROI assigned to it.

The Math Behind ROI

Return on Investment is a simple but powerful ratio that compares the gain or loss from an investment relative to its cost.

ROI = ((Final Value − Initial Cost) / Initial Cost) × 100

Net Profit Method

If you already know your net profit, the formula is even simpler: (Net Profit / Investment Cost) × 100. Common in marketing campaigns where revenue generated is directly measured.

Annualized ROI

To compare investments over different time periods, calculate the annualized ROI — what the equivalent return would be if stretched evenly over a 12-month period.

Real-World Example

Let's look at how a common real estate investment breaks down using the ROI formula.

1. Initial Investment

You purchase a property and put down $50,000 as your total out-of-pocket investment.

2. Final Value / Return

After 3 years, you sell the property and net $75,000 after all fees and taxes.

3. The Calculation

Net profit is $25,000. Divided by the initial $50,000 investment equals 0.5. Multiply by 100 to get 50% ROI.

Investment$50,000
Final Value$75,000
Net Profit ($75k − $50k)$25,000
ROI ($25k / $50k)50.00%
Time Period3 Years
Annualized ROI14.47%

Common Use Cases

ROI is a universal metric used across industries to evaluate the efficiency of an investment.

Business Investments

Evaluate new equipment purchases, software subscriptions, or business expansions to ensure they return more value than their cost.

Example:Purchasing a $10,000 machine that generates $15,000 in additional yearly revenue.

Real Estate

Calculate the return on rental properties, fix-and-flips, or commercial real estate by factoring in down payments and net proceeds.

Example:A $40,000 down payment yielding $50,000 in equity upon selling.

Marketing Campaigns

Determine the effectiveness of ad spend (ROAS) by comparing campaign costs against the directly attributed sales revenue.

Example:Spending $2,000 on Facebook ads to generate $8,000 in new sales.

Frequently Asked Questions

Common questions about ROI and how to calculate it.

What is ROI?
ROI stands for Return on Investment. It is a financial ratio used to calculate the benefit (or return) an investor will receive in relation to their investment cost. It's universally used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments.
How do I calculate ROI?
The basic formula is: ROI = (Net Profit / Cost of Investment) x 100. First, subtract the initial cost from the final value to find the net profit. Then, divide that net profit by the initial cost. Finally, multiply by 100 to express the result as a percentage.
What is considered a 'good' ROI?
A 'good' ROI depends entirely on the industry, the level of risk taken, and the time period. Generally, for long-term stock market investments, a 7-10% annual ROI is considered good. For highly risky business ventures, investors might expect a 20-30% ROI to justify the risk.
What is annualized ROI and why does it matter?
Standard ROI doesn't account for time. Earning 50% over 1 year is fantastic, but earning 50% over 10 years is less impressive (only about 4.1% annualized). Annualized ROI standardizes the return over a 12-month period, allowing you to accurately compare investments held for different lengths of time.
Can ROI be negative?
Yes. A negative ROI means you lost money on the investment. For example, if you invest $1,000 and sell it later for $800, your net profit is -$200. Your ROI would be -20%.

Learn About ROI

Need help understanding your result? Visit our ROI Resources page for examples, definitions, and practical guides.

What Is ROI? How to Calculate ROI What Is a Good ROI? All Resources

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