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Investment Return Calculator

Enter what you put in, what it's worth now, and how many years you held it — get the annualised CAGR behind the growth, plus the total gain and total return.

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Quick Answer

Enter your initial investment, its final value, and the holding period in years. The tool returns three figures: the total gain in money, the total return as a percentage of what you put in, and the CAGR — the compound annual growth rate, the steady yearly rate that would have grown the start value into the end value. It is a lump-sum measure, shown gross of tax, fees and inflation.

What the Investment Return Calculator Does

This calculator works backwards from a result. You already know what an investment was worth at the start and what it is worth now; it tells you the annual rate that connects the two. The headline figure is the CAGR — compound annual growth rate — shown alongside the absolute gain and the cumulative total return.

It is the right tool when you have a single lump sum and a start-to-finish value, and you want one comparable yearly number — to line up a stock, a mutual fund and a fixed deposit on the same scale even when they ran for different lengths of time.

How It Works

Type in three things: the initial amount, the final value, and the number of years held. The defaults are 1,00,000 growing to 1,80,000 over 5 years.

Total gain is final minus initial. Total return divides that gain by the initial amount. CAGR takes the ratio of final to initial, raises it to the power of one divided by the years, subtracts one, and shows the result as a percentage.

Everything is computed in your browser as you type. Nothing about your money is uploaded.

Methodology

  1. Find the total gain. Subtract the initial value from the final value.
  2. Find the total return. Divide the gain by the initial value and express it as a percentage.
  3. Take the growth ratio. Divide the final value by the initial value.
  4. Annualise into CAGR. Raise that ratio to the power of one divided by the number of years, subtract one, and multiply by 100.

CAGR (compound annual growth rate)

CAGR = (Final ÷ Initial) ^ (1 ÷ Years) − 1 Total return = (Final − Initial) ÷ Initial
Worked examples
1,00,000 grows to 1,80,000 over 5 years: (1.8) ^ (1 ÷ 5) − 1 = 12.47% CAGR, on a total return of 80.0%.
10,000 grows to 25,000 over 8 years: (2.5) ^ (1 ÷ 8) − 1 = 12.14% CAGR, on a total return of 150.0%.

The two examples show why CAGR is useful: 80% over five years and 150% over eight years look very different as totals, but their annual rates are almost identical at about 12%.

Assumptions

  • A single lump sum invested once at the start and held to the end — no further deposits or withdrawals. For monthly investing, use the SIP calculator instead.
  • Returns are treated as reinvested and compounding; CAGR is a compounding measure by definition.
  • Figures are nominal and gross. Inflation, income tax, brokerage, fund expense ratios and exit loads are not deducted.
  • The initial value must be greater than zero. If the final value is below the initial, the CAGR comes out negative — a real annualised loss.

Technical Details

Headline metricCAGR (annualised %)
Also showsTotal gain, total return (%)
InputsInitial value, final value, years
Year handlingWhole or fractional years
RoundingCAGR 2 decimals, total return 1 decimal
Processing100% in-browser, nothing uploaded

Standards & references

  • CAGR is a geometric mean — CAGR is the geometric mean of the yearly returns — the nth root of total growth — not the arithmetic average of them.
  • It smooths volatility — It reports the single steady rate equivalent to the actual, uneven year-by-year path the investment took.

Accuracy & Limitations

CAGR smooths volatility: it gives the constant rate that would produce the same end value, but the real journey almost certainly had up years and down years. Two investments with the same CAGR can have carried very different risk.

Because it is a geometric mean, CAGR is always lower than the simple arithmetic average of the yearly returns whenever those returns vary. The gap — often called volatility drag — widens as returns get more volatile, and the two are equal only if every year returned exactly the same.

It ignores the timing of any cash added or taken out along the way. If money moved in or out mid-period, CAGR on the raw start and end values misstates your actual experience; a money-weighted return such as XIRR is the right tool there.

Results are nominal. After inflation, a 12% CAGR with 6% inflation is closer to 6% in real purchasing power.

Real-World Use Cases

Compare investments on one scale

Put a stock, a fund and an FD on the same annualised footing so a five-year result and an eight-year result are directly comparable.

Sense-check a past return

You doubled your money in six years — is that good? CAGR turns it into about 12.2% a year, which you can weigh against a benchmark.

Back out an implied rate

Know the start and end value but not the rate? This solves for the rate you would feed into a compound-interest calculator.

Measure business growth

CAGR is not only for investments — apply it to revenue, users or any quantity that grew from one figure to another over a number of years.

When to use it — and when not to

Good for

  • A single lump sum with a known start value, end value and holding period
  • Comparing investments of different lengths on one annual rate
  • Quick growth rates for revenue, users or any metric that compounds

Not the best choice for

  • Regular monthly investing, where ongoing contributions break the lump-sum assumption
  • Portfolios with deposits or withdrawals mid-period — use XIRR or IRR
  • Judging risk, since CAGR hides the volatility you actually lived through

For monthly investing use the SIP calculator; to project a future value from a known rate use the compound interest calculator; for a fixed deposit use the FD calculator.

Frequently Asked Questions

What does this calculator actually measure?
It measures CAGR — the compound annual growth rate — which is the steady yearly rate that links your starting value to your final value. It also shows the absolute gain and the cumulative total return over the whole period.
What is CAGR in plain terms?
It is the constant annual rate that would have grown your initial amount into the final amount if it compounded every year. Real investments rarely grow at a steady rate, so CAGR is the smooth equivalent of a bumpy ride.
Why is CAGR lower than my average yearly return?
Because it is a geometric mean, not an arithmetic one. When yearly returns vary, the geometric mean is always lower — a 50% gain then a 50% loss averages to 0% but actually leaves you down 25%. CAGR captures that reality; a simple average does not.
Does it work if I lost money?
Yes. If the final value is below the initial value, the CAGR is negative, telling you the annualised rate of loss. The formula handles gains and losses the same way.
Can I enter fractional years?
Yes. You can type something like 2.5 years, and the calculator annualises over that exact period.
Does it account for my monthly SIP contributions?
No. This is a lump-sum measure that assumes one amount invested at the start. For regular monthly investing, where you add money over time, use the SIP calculator instead.
Is the result before or after tax and inflation?
Before both. The CAGR is nominal and gross, so subtract inflation to get your real return and account for tax and fees separately.
What is the difference between total return and CAGR?
Total return is the cumulative percentage gain over the entire period — 80% in the default example. CAGR annualises that into a per-year rate — about 12.5% — so you can compare periods of different lengths.
How is this different from a compound-interest calculator?
A compound-interest calculator goes forward: you give it a rate and it projects a future value. This goes backward: you give it the start and end values and it solves for the rate that connects them.
Why do two very different totals show almost the same CAGR?
Because the periods differ. A larger total earned over more years can annualise to the same rate as a smaller total earned over fewer years. Annualising is exactly what lets you compare them fairly.
Does my data leave my device?
No. The whole calculation runs in your browser. Nothing is sent to a server, so your figures stay with you.
Can I use it for business or revenue growth?
Yes. CAGR applies to any quantity that grows from one value to another over a known number of years — revenue, subscribers, traffic or units — not just investment portfolios.

References

The CAGR here is the standard geometric-mean formula — final over initial, to the power of one over years — the same definition used in finance textbooks and fund factsheets. It is a smoothed annual rate, not a promise of any single year's return.

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