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Enter your investment amount and dates to quickly calculate ROI and annualized return, helping you make smarter investment decisions.
Enter values to start calculation
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
Return on investment (ROI) expresses net gain or loss as a percentage of the amount invested. Enter the investment amount and the total returned amount, using the same currency and scope for both. The calculator reports the difference as gain and divides that difference by the investment amount. It also shows the two entered values for comparison.
Net gain = returned amount − investment amount
Simple ROI (%) = (net gain ÷ investment amount) × 100
For an investment of $10,000 and a total return of $12,000, net gain is $2,000 and simple ROI is 20%. If the returned amount is below the investment, the gain and ROI are negative. The calculation itself does not depend on whether inputs are dollars, euros, or another common unit.
This is a static comparison of two values. It has no investment dates or holding period, so it does not calculate an annualized rate. It also does not model deposits or withdrawals over time, compounding, or a scheduled series of cash flows. Two investments with the same simple ROI can have different durations and cash-flow patterns.
The formula is only as useful as the amounts: the investment figure should represent the cost basis you intend to compare, and the returned amount should represent the total value recovered on the same basis.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Use the original amount invested as the denominator. A zero amount has no defined ROI because division by zero is undefined.
Enter gross value received or recovered, not just the profit. For $10,000 invested with $2,000 profit, the returned amount is $12,000.
Net gain is returned minus invested. ROI is that net gain divided by invested and shown as a percentage. Compare inputs and keep the same currency unit.
Use cases
See how the tool fits into real work and everyday tasks.
Compare documented project cost with the value recovered or revenue attributed to it. Reuse a consistent cost and return definition when comparing estimates with actuals.
Compare the cost of goods with total sale proceeds for a batch. Decide which fees belong in the cost figure before comparing batches.
For a snapshot, compare the chosen investment basis with current value plus any distributions included in the return figure. Record the valuation date and included costs alongside the result.
Q&A
Find concise answers to common questions and confusing cases.
Use total value returned, including recovery of the original investment. With $10,000 invested and $2,000 profit, enter $12,000 returned; the calculator then shows $2,000 net gain and 20% ROI.
The formula divides net gain by the investment amount. Zero cannot be used as that denominator, so enter a valid nonzero investment amount.
Not on its own. It returns simple total ROI and has no dates or duration input. A time-adjusted return method is needed to compare different holding periods on that basis.
Notes
Review scope, result limitations, and important precautions before use.
This arithmetic is not investment advice, an accounting or tax determination, or a forecast. It does not automatically include fees, taxes, financing costs, inflation, or opportunity cost. Choose amounts that reflect the costs and proceeds relevant to your question, and do not treat results across different time periods as equivalent annual returns.
Related
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