ROI Calculator

Return on investment is the language every investor and business owner eventually has to speak, and the ROI Calculator makes it fluent. Feed it three numbers — the initial investment, the final value, and the time period in years — and it instantly returns the total ROI percentage, the annualized growth rate known as CAGR, the total profit in dollars, and the investment multiple. Those four figures answer different questions: total ROI tells you whether the deal made money, profit tells you how much in absolute terms, the multiple expresses the same growth as a ratio such as 1.8x, and CAGR converts the whole journey into one comparable per-year rate. That annualized view is where the calculator earns its keep, because an 80% return over five years sounds dramatic until you realize it is about 12.5% per year, while the same 80% in a single year is outstanding. The tool updates live as you type, colour-codes profits green and losses red, and shows every formula with your own numbers plugged in, so you can trust or verify the arithmetic at a glance.

1. 1

   Enter the Initial investment in the first field (USD).

2. 2

   Enter the Final value of the investment in the second field.

3. 3

   Enter the Time period in years, supporting decimals such as 2.5.

4. 4

   Read ROI (total), Annualized (CAGR), Total profit, and Multiple in the four result cards.

5. 5

   Expand the Formulas card to see each calculation resolved with your own numbers.

• Comparing a rental property's five-year return against an index fund before reinvesting.
• Putting two startup exit projections on a common annualized basis before choosing one.
• Reporting a marketing campaign's year-one performance to a client in percentage and dollar terms.
• Converting a multi-year portfolio gain into a per-year rate for a financial review.
• Quantifying the cost of a losing trade in percentages so the lesson sticks.
• Checking whether a 60% total return over three years actually beats a savings account's annual rate.

• Always read CAGR alongside total ROI — long holding periods inflate the total return while the annualized rate shows the true pace.
• Express every comparison in the same time unit, because the annualized number is meaningless if periods are mixed.
• Remember ROI ignores interim cash flows: dividends, rent, and additional deposits are not part of the two-value formula.
• Double-check the arithmetic in the Formulas card, which substitutes your own inputs into each equation.
• Treat losses as valid inputs — the tool deliberately accepts final values below the initial investment and shows them in red.
• Use the multiple for quick mental checks (1.5x, 2x, 3x) and reserve precise percentages for reporting.

• Enter 1 as the period to see a one-year return before committing to a longer model.
• Use decimal years for odd holding periods — 14 months is about 1.17 years.
• Compare the tool's CAGR against a benchmark index's long-term rate rather than judging returns in isolation.
• Hit Reset to defaults to return to the worked example and recalibrate your expectations.