Free ROI Calculator — Annualized Return, CAGR & Compare Investments
Return on Investment (ROI) is one of the most searched financial terms on the internet. And yet every free ROI calculator you find does the same thing: two input fields, one percentage, done. That is fine for a back-of-envelope check. It is not fine when you are comparing a property purchase to a stock portfolio, calculating whether your marketing campaign paid off, or figuring out what return you actually need to hit your financial goal.
The ExcelGuru ROI Calculator was built to fill that gap. It calculates not just ROI, but annualized ROI, CAGR, and return multiple — all in a single step. It compares your return against six real-world benchmarks including the S&P 500. It lets you run up to four investments side by side. And it has a reverse calculator: tell it your target ROI, and it tells you exactly what your investment needs to be worth.
No account. No upload. No server. Everything runs in your browser.
🔑 The gap in the market Calculator.net and Omni Calculator — the two most-ranked ROI tools — both give you ROI% and annualized ROI. Neither offers CAGR, use-case tabs, benchmark comparison, multi-investment comparison, or reverse calculation. ExcelGuru is the only free, no-signup, browser-based ROI tool with all of these in one place. |
What Does This Calculator Actually Compute?
Most people know ROI as a simple percentage — how much you gained relative to what you put in. But that number on its own has a critical flaw: it ignores time. A 50% ROI sounds the same whether it took 6 months or 6 years. It is not. The ExcelGuru calculator computes four distinct metrics to give you the full picture:
Simple ROI
The foundational metric. Calculated as: (Amount Returned − Amount Invested) ÷ Amount Invested × 100. A positive ROI means profit. A negative ROI means loss. Simple to compute, simple to explain, but meaningless without knowing the time period.
Formula: ROI = (Returned − Invested) ÷ Invested × 100
Annualized ROI
This converts your total ROI into a per-year rate using compounding. It is the metric that makes fair comparison possible. A 50% ROI over 5 years is an annualized ROI of 8.45% per year — which is actually below the S&P 500 average. Knowing this changes your decision.
Formula: Annualized ROI = (Returned ÷ Invested)^(1÷years) − 1
CAGR (Compound Annual Growth Rate)
For a single cash-in, single cash-out investment, CAGR is identical to Annualized ROI. The distinction matters for investments with intermediate cash flows (like dividends or rental income), where CAGR measures pure price appreciation while Annualized ROI includes income. The calculator displays both, labelled separately, so you always know which you are looking at.
Return Multiple
A simple ratio: how many times your money grew. A 2× multiple means you doubled your money. A 0.7× multiple means you lost 30%. Many investors find multiples more intuitive than percentages, especially for large returns — it is easier to picture “3.5×” than “250%”.
📐 Why CAGR and Annualized ROI differ for property investments If you bought a property for £200,000, collected £30,000 in rent over 3 years, spent £8,000 on maintenance, and sold for £240,000 — your Annualized ROI includes the net rental income (£22,000) plus capital gain (£40,000) divided by your purchase price. Your CAGR would only show the capital appreciation: (240,000 ÷ 200,000)^(1/3) − 1 = 6.3%. Total Annualized ROI including rent would be higher. The calculator handles both automatically via the Real Estate tab. |
Five Use-Case Tabs — Each One Changes the Calculator
Every asset class has different inputs. Lumping stocks, property, and ad campaigns into one generic form leads to wrong numbers. The ExcelGuru calculator has five tabs that change both the field labels and the calculation logic:
General Investment
The default. Amount Invested and Amount Returned, with no adjustments. Use this for savings accounts, bonds, cryptocurrency, peer-to-peer lending, or any investment where your return is simply what you got back minus what you put in.
Stock / Shares
Adds a “Dividends Received” field. This is added to your Amount Returned before the calculation runs, giving you total return (capital gain + income) rather than just price appreciation. Labels change to “Purchase Price (Total)” and “Sale Price (Total)” with hints reminding you to include brokerage fees in both directions.
Real Estate / Property
Adds two fields: Total Rental Income (cumulative rent collected during ownership) and Total Running Costs (maintenance, insurance, mortgage interest, property tax). Net rental income — rent minus costs — is added to your sale price before computing ROI. This gives you the genuine total return on the property, not just the capital gain. Labels change to “Purchase Price” and “Sale Price” with hints to include stamp duty and legal fees.
Marketing / Campaign
Adds a COGS (Cost of Goods Sold) field. For marketing ROI, using gross revenue instead of net profit inflates the number dramatically. This tab subtracts COGS from revenue before computing ROI, giving you marketing return on net profit — the number that actually tells you if the campaign paid off. Labels change to “Marketing Spend” and “Revenue Generated” with hints to include agency fees and creative costs.
Business / Project
Adds an “Operating Expenses” field for ongoing costs not included in the initial capital expenditure. These are added to the invested amount before computing ROI, ensuring your capex-heavy initial investment is not evaluated in isolation from the opex it requires to run. Labels change to “Total Investment” and “Net Revenue / Proceeds”.
💡 Use-case specific insight cards Each tab also shows a contextual insight card below the results — a short explanation of how to interpret your specific ROI number within that asset class, including industry benchmarks. For example, the Marketing tab reminds you that a 5:1 revenue-to-spend ratio (400% ROI) is generally considered strong for digital marketing, while the Stock tab shows how your annualized return compares to the S&P 500 ten-year average. |
Time Input — Date-Based or Duration-Based
The annualized ROI formula requires an accurate time period. The calculator gives you two ways to provide it:
- Duration mode — Enter years, months, and days separately. A 2-year 6-month investment becomes 2.5 years. A 45-day trade becomes 0.123 years. The conversion is precise, using 365.25 days per year to account for leap years.
- Date mode — Enter exact start and end dates. The calculator computes the difference in days and converts to years. This is the most accurate method for real investments where you know your buy and sell dates.
Both modes update the results in real time as you type or change dates — no button press required for the calculation to run.
Benchmark Comparison — How Does Your Return Stack Up?
Knowing your annualized ROI is 9% tells you nothing on its own. The benchmark section puts it in context against six reference points, shown as an animated bar chart:
- Inflation (3.2%) — The minimum bar — below this, your investment is losing purchasing power in real terms
- Savings account (4.5%) — The opportunity cost of doing nothing with your money in 2025
- 10-year US Treasury bond (4.3%) — Risk-free government rate — the “floor” for any investment with meaningful risk
- Global real estate average (7%) — Long-run average total return on residential property globally
- S&P 500 — 10-year average (10.5%) — The most commonly cited equity benchmark — the hurdle for active investors
- Nasdaq 100 — 10-year average (17%) — The technology-heavy benchmark that outpaced the S&P 500 significantly in the 2010s–2020s
Your investment appears as a seventh bar, colour-coded: green if you beat the S&P 500, amber if you beat inflation but not the S&P, red if you are below inflation.
Compare Mode — Four Investments Side by Side
Switch to Compare mode and add up to four investments simultaneously. Each entry has: investment name (optional label), amount invested, amount returned, and holding period in years. Click Compare and the calculator:
- Runs ROI, Annualized ROI, CAGR, net gain, and return multiple for every entry
- Sorts all investments from highest to lowest annualized ROI
- Badges the top performer as “Best ROI”
- Shows a benchmark comparison for the top-performing investment
This mode answers the question most investors actually have: “I have three properties and a stock portfolio — which one is actually performing best?” Without annualized comparison, a 3-year property gain can look worse than a 6-month stock spike. With it, you see the true like-for-like performance.
📊 Real-world Compare mode example Investment A: £50,000 property gain over 5 years = 20% ROI = 3.71% annualized. Investment B: £8,000 stock gain over 8 months = 16% ROI = 24.9% annualized. Investment C: £3,000 marketing campaign gain over 1 month = 60% ROI = 7,200% annualized (but this is a single campaign, not scalable). Compare mode shows all three ranked by annualized ROI, making the wildly different holding periods visible immediately. |
Reverse Calculator — Work Backwards from Your Target
The reverse calculator inverts the usual question. Instead of “what did I earn?” it answers “what do I need to earn?”
Enter your invested amount, target ROI percentage, and holding period. The calculator instantly shows:
- Required return value for target simple ROI — The exact exit value you need for that percentage
- Required return value for target annualized ROI — The exit value compounded over your holding period
- Net gain needed in both cases — The profit above your invested amount
This mode is built for planning. A property investor budgeting a £300,000 purchase can type in a target 15% annualized ROI over 5 years and immediately see they need to exit at £603,000 — a useful sanity check against local market conditions before they commit.
The reverse calculator also lives inside the Single Investment mode results — after calculating your actual ROI, type any target % into the reverse field and instantly see the required return value without switching modes.
How This Calculator Compares to Every Alternative
Feature | ExcelGuru | Calculator.net | Omni Calculator | Plerdy | GigaCalculator |
Simple ROI % | Yes | Yes | Yes | Yes | Yes |
Annualized ROI | Yes | Yes | Yes | Yes | Yes |
CAGR | Yes | No | No | No | No |
Return Multiple | Yes | No | No | No | No |
Date-based input | Yes | Yes (basic) | No | Yes | No |
Duration input (yr/mo/day) | Yes | No | No | No | No |
Use-case tabs (5 types) | Yes | No | No | No | No |
Benchmark vs S&P 500 | Yes | No | No | No | No |
Compare 4 investments | Yes | No | No | No | No |
Reverse calculator | Yes | No | No | No | No |
Animated donut chart | Yes | Yes | No | No | No |
9 currency options | Yes | No | No | No | No |
Real estate tab (rent + costs) | Yes | No | No | No | No |
Marketing tab (COGS adjust) | Yes | No | No | No | No |
No account required | Yes | Yes | Yes | Yes | Yes |
Live calculation as you type | Yes | No | No | No | No |
Step-by-Step: How to Use the Tool
Calculate ROI in seconds
A simple, structured workflow to evaluate your investments, compare scenarios, and plan returns — all in one place.
Open the Tool
Launch instantly in your browser. No download, no login, no waiting.
Select Use Case
Choose from different investment types. The tool adapts inputs automatically.
Choose Currency
Enter Investment Data
Input invested amount and returned value including fees and income.
Set Investment Period
Use dates or duration (years/months/days).
View Results Instantly
Benchmark Performance
Compare against market benchmarks like S&P 500 and bonds.
Reverse Calculator
Enter target ROI to calculate required future value.
Compare & Analyze
Compare up to 4 investments or switch to reverse mode for planning.
Frequently Asked Questions
Everything you need to know about ROI, annualized returns, CAGR, rental income, marketing ROI, and how the calculator works.
Simple ROI is the total percentage gain or loss on an investment, regardless of how long it took. Annualized ROI converts that total return into a per-year rate using compounding, so you can fairly compare a 1-year investment to a 5-year investment. A 100% ROI over 10 years is a 7.2% annualized ROI — below the S&P 500 average.
CAGR (Compound Annual Growth Rate) measures the smoothed annual growth rate of an investment assuming reinvested returns. For a simple investment with one cash-in and one cash-out (buying a stock and selling it), CAGR equals Annualized ROI exactly. The difference appears when an investment produces intermediate cash flows — dividends, rental income — that are not reinvested at the same rate. In those cases, Annualized ROI includes the income while CAGR measures only the underlying asset appreciation.
It depends entirely on the asset class and holding period. As a broad guide: beating inflation (3-4% annualized) means your money is not losing purchasing power. Beating a savings account (4-5%) means you are doing better than doing nothing. Beating the S&P 500 (10.5% annualized, 10-year average) means you are outperforming the majority of professional fund managers. Beating 15-20% consistently puts you in venture-capital territory.
Enter the total rental income received over your ownership period and the total running costs (maintenance, insurance, tax, mortgage interest) in the two extra fields. The calculator subtracts running costs from rental income to get net rental yield, then adds this to your sale price before computing ROI. This gives you the true total return — capital gain plus net rental income — in a single number.
Marketing ROI calculated on gross revenue is meaningless — if you spend $10,000 on ads and generate $40,000 in revenue but the products cost $30,000 to make, your actual ROI is (10,000 - 10,000) / 10,000 = 0%, not 300%. The Marketing tab deducts COGS from revenue before computing ROI, giving you return on net profit — the only number that tells you whether the campaign was genuinely profitable.
The reverse calculator inverts the normal ROI question. Instead of computing ROI from your actual results, it answers: “Given what I invested and how long I am holding it, what does my investment need to be worth to achieve a target ROI?” Enter your invested amount, target ROI percentage, and holding period in years. The tool computes the required exit value for both simple ROI and annualized ROI targets.
Yes — that is exactly why Compare mode ranks by annualized ROI rather than simple ROI. A 3-year investment with 60% total ROI (17.6% annualized) will rank higher than a 5-year investment with 80% total ROI (12.5% annualized), which is the correct answer. Simple ROI comparison across different time periods is misleading; annualized comparison is the only fair method.
No. The tool is a single HTML file — approximately 63 KB. Every calculation runs in JavaScript in your browser. No data is transmitted to any server at any point. You can disconnect from the internet after the page loads and the calculator continues to work identically. This makes it suitable for confidential financial data, internal business figures, or proprietary investment information.
The currency selector changes only the symbol displayed — $ USD, £ GBP, € EUR, ₹ INR, د.إ AED, ¥ JPY, ₩ KRW, A$ AUD, or C$ CAD. All calculations are currency-agnostic; the math is identical regardless of which symbol you choose. Use whichever currency your investment is denominated in.
Yes. The layout is fully responsive. On phones, the two-column layout (calculator left, information right) stacks vertically. All inputs, sliders, and result cards resize for touchscreen use. The tool works in all major mobile browsers — Chrome, Safari, Firefox, and Edge — without any installation.