Free ROI and CAGR calculator: return on investment and compound annual growth rate. No signup.
Last updated 2026-05-28 · Davi Baptista
How it works
Free ROI and CAGR calculator from Fynvorax. Measure total return and annualized growth for stocks, real estate, and other investments.
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<p>Evaluating investment performance starts with three inputs: amount invested, ending value, and holding period. Return on investment (ROI) shows total percentage gain or loss over the full period. Compound annual growth rate (CAGR) annualizes that result so you can compare investments held for different lengths of time.</p>
<h3 class="text-lg font-bold text-white mt-4">Understanding the Mathematics</h3>
<p>Absolute ROI is simple: subtract the initial investment from the final value to determine your profit, then divide that profit by the initial investment cost. Expressed as a formula: <strong>ROI = (Final Value - Initial Value) / Initial Value * 100%</strong>. This represents absolute growth. However, ROI fails to incorporate the variable of time. Making 50% ROI in 1 year is spectacular; making 50% ROI over 15 years yields very modest annualized compounding because inflation and opportunity cost erode compounding speed.</p>
<p>CAGR is the constant annual rate that would grow the starting value to the ending value over the period, assuming compounding. The formula is: <strong>CAGR = [(Final Value / Initial Value) ^ (1 / Years)] - 1</strong>, expressed as a percentage.</p>
<h3 class="text-lg font-bold text-white mt-4">Growth Metrics Comparison Table</h3>
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<th class="p-3">Initial Cost</th>
<th class="p-3">Final Return</th>
<th class="p-3">Years</th>
<th class="p-3 text-emerald-400">Absolute ROI</th>
<th class="p-3 text-emerald-400">CAGR (Annual Compound)</th>
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<td class="p-3">$50,000</td>
<td class="p-3">$80,000</td>
<td class="p-3">3 Years</td>
<td class="p-3">60.0%</td>
<td class="p-3">16.96% / yr</td>
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<td class="p-3">$50,000</td>
<td class="p-3">$80,000</td>
<td class="p-3">10 Years</td>
<td class="p-3">60.0%</td>
<td class="p-3">4.81% / yr</td>
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<td class="p-3">$10,000</td>
<td class="p-3">$25,000</td>
<td class="p-3">5 Years</td>
<td class="p-3">150.0%</td>
<td class="p-3">20.11% / yr</td>
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<h3 class="text-lg font-bold text-white mt-4">Metrics Pros & Cons</h3>
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<h4 class="font-semibold text-emerald-400 mb-2">Absolute ROI (Return on Investment)</h4>
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<li><strong>Pro:</strong> Easy to comprehend and explain to third-party stakeholders.</li>
<li><strong>Pro:</strong> Outstanding for fast calculations under short-term periods.</li>
<li><strong>Con:</strong> Ignores the duration parameter, distorting historical asset comparisons.</li>
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<h4 class="font-semibold text-emerald-400 mb-2">Compound Annual Growth (CAGR)</h4>
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<li><strong>Pro:</strong> Isolates the continuous efficiency of money over long periods.</li>
<li><strong>Pro:</strong> Allows accurate performance comparisons with index benchmarks.</li>
<li><strong>Con:</strong> Assumes a smooth steady compounding rate; ignores mid-term volatility.</li>
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Frequently asked questions
What does CAGR stand for and when is it used?
CAGR stands for Compound Annual Growth Rate. It is the best metric to evaluate geometric progression over long multi-year horizons, letting you compare mutual funds, real estate assets, and bond portfolios directly against index benchmarks.
Can CAGR be negative?
Yes. If the terminal or final value is less than the initial invested premium, the system calculates a negative annualized decay speed, reflecting compounding capital erosion.
When should I use ROI vs CAGR?
Use ROI for quick total return on a single project. Use CAGR to compare funds, properties, or portfolios held for different lengths.
Can two investments have the same ROI but different CAGR?
Yes — identical ending ROI over different years implies very different annualized efficiency. Always check the holding period.