MONEY
Return on investment calculator
Compare a final value with a positive invested amount using a transparent, non-annualized return-on-investment ratio.
Neutral presentation is active.
No regional currency, unit or language profile is applied. This choice does not convert values or change formulas, results, routes or legal guidance.
Compare two amounts in the same currency or unit. This simple ROI is not annualized and does not infer a holding period, cash flows, fees, taxes or exchange conversion.
Return on investment
25%- Net gain or loss
- 2,500
- Value multiple
- 1.25×
- Final value as invested amount
- 125%
- Reverse final-value check
- 12,500
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Verification and calculation details
- Purpose
- Return on investment calculator
- Variables and units
- Use the labelled fields and units shown in the calculator. Results use those units unless a conversion is stated.
- Formula and method
- The exact formula and worked example are shown below. Deterministic formula executed locally in the browser.
- Assumptions
- Only entered values and stated assumptions are included. Local fees, rules and professional requirements are excluded unless explicitly shown.
- Engine version
- 1.0.0
- Production verification baseline
- Release 76 · source
2726979 - Verification run
release-v76-2026-10-20- Last verified
- — Automated release checks passing
Read the Calculation Standard · Report a calculation or source issue
How this calculator works
Net gain or loss = final value − invested amount. ROI percentage = net gain or loss ÷ invested amount × 100. Value multiple = final value ÷ invested amount.
Variables and inputs
- Invested amount
- Required numeric input. from 0.01 to 1 billion; finite currency or same-unit amount.
- Final value
- Required numeric input. from zero to 1 billion; finite and in the same unit as the invested amount.
How to interpret the result
The calculator returns net gain or loss in the entered unit, non-annualized ROI percentage, final-to-invested value multiple, final value as a percentage of the invested amount, reverse final-value check. Read each output against the assumptions you entered, compare alternatives one variable at a time, and use the result as an estimate rather than a promise.
Common mistakes to avoid
- Mixing units or entering a rate as a decimal when the field requests a percentage.
- Rounding intermediate values instead of the final displayed result.
- Leaving out a cost, timing rule or local requirement listed in the assumptions below.
Practical uses
Use the return on investment calculator to check a real scenario, compare a changed assumption and explain the arithmetic before relying on a quote, specification or decision.
Worked example
An invested amount of 10,000 and final value of 12,500 produce a net gain of 2,500, an ROI of 25%, a value multiple of 1.25 and a reverse check of 12,500.
Assumptions and limitations
- the invested amount and final value use the same currency or unit
- the invested amount is positive so the ratio is defined
- the two entered values already reflect any cash flows or costs the user intends to include
- full calculation precision is retained before display formatting
- This two-value comparison is not annualized and does not account for how long the investment was held
- Interim cash flows, dividends, withdrawals, fees, taxes, inflation, financing costs and risk are excluded unless already reflected in the entered values
- The result is arithmetic information, not a forecast, valuation opinion or investment recommendation
Important notes
Results are estimates based on the values entered. Confirm rates, prices, units and professional requirements that apply in your location. Review the Answer Atlas Calculation Standard and corrections policy for formula, privacy and correction rules.
Frequently asked questions
What does this ROI percentage compare?
It compares the entered final value with the entered positive invested amount. A positive result is a gain, zero is break-even and a negative result is a loss.
Does this return-on-investment result account for time?
No. This is a non-annualized two-value comparison. Use a time-aware measure such as CAGR when the holding period must be considered.
Can the ROI result be below zero?
Yes. When the entered final value is lower than the invested amount, the net result and ROI percentage are negative. A final value of zero produces −100%.
Should fees, taxes or cash distributions be included?
Only if you deliberately incorporate them into the two entered values. The calculator does not infer fees, taxes, dividends, withdrawals or additional contributions.