Your inputs

Invested and returned

Amount invested

The total you put in, greater than $0.

Amount returned

The total you got back, up to $1 trillion.

Your inputs are calculated locally and are not stored.

Return on investment60%

Your investment gained $3,000.00 on $5,000.00 put in.

Net profit: $3,000.00
Amount invested: $5,000.00
Amount returned: $8,000.00

Formula & methodology

How return on investment is measured

Return on investment compares the net profit of an outlay to its cost. Net profit is the amount returned minus the amount invested; dividing that by the amount invested and multiplying by 100 gives the ROI percentage. This simple ROI does not account for how long the money was invested, so use an annualized measure when comparing investments held for different lengths of time.

ROI % = ((Amount returned − Amount invested) / Amount invested) × 100
Net profit = Amount returned − Amount invested

Amount invested: What you put in
Amount returned: What you got back

Worked example

$5,000 invested, $8,000 returned

Suppose you invest $5,000 and later receive $8,000 back. The net profit is $8,000 − $5,000 = $3,000. The ROI is $3,000 / $5,000 = 0.60, or 60%.

This is an educational calculation based only on the values you provide. It is not investment or tax advice.

Assumptions

What this calculator assumes

Amount returned is the total value received, including any income and the final sale value.
Simple ROI ignores the holding period — it does not annualize the return.
No taxes, fees, or inflation adjustments are modeled.
Money values are rounded to the nearest cent for display.

Common questions

ROI FAQ

Does ROI account for time?

No. Simple ROI measures total return regardless of how long the money was invested. A 60% ROI over one year is very different from 60% over ten years, so use an annualized or compound-growth measure when the time frames differ.

What counts as the amount returned?

Include everything of value you received from the investment — the final sale value plus any income such as interest, dividends, or distributions along the way. Leaving income out understates the true return.

Primary sources

Sources and review notes

Methodology last checked Jul 14, 2026. Formula implementation is covered by deterministic unit tests. No financial professional review is claimed yet.