ROI Calculator
Is an investment worth it? ROI tells you how much you earn per euro invested, and the annualized figure lets you compare opportunities of different durations fairly.
How it works
ROI equals the total gain (final value minus cost) divided by the initial investment. Annualized ROI converts the total return into a yearly rate, accounting for the holding period, so a 3-year 50% return and a 1-year 50% return can be compared honestly.
Worked example
Example: Invest €10,000, final value €15,000, 3 years → ROI 50%, annualized ~14.5%.
Recommendations
- Always compare annualized ROI — a longer period inflates raw ROI.
- Use risk-free rates as a baseline: your ROI should beat what you earn risk-free.
- Include all costs — fees, taxes, maintenance — in the initial investment.
Tips & advice
- A 14% annualized return doubles your money in about 5 years.
- Negative ROI is a signal to cut losses — holding longer rarely fixes a bad investment.
- For shares, remember returns include dividends and are subject to taxes.
Next steps & suggestions
- Compare with advertising returns using the ROAS Calculator.
- Check whether a project covers its costs with the Break-even Calculator.
- Assess a rental purchase with the Rental Yield Calculator.
ROAS Calculator
A high ROAS looks great, but profit is what pays the bills. This calculator shows your ROAS, the profit behind it, and the break-even ROAS you must exceed to actually make money.
Gross Margin Calculator
Gross margin shows how efficiently you produce and sell your product before overheads kick in. This calculator gives you gross profit, gross margin and the markup implied by your pricing.
Net Margin Calculator
Gross margin tells you about your product; net margin tells you about your business. After every cost is paid, what percentage of revenue is actually yours?
Sale Price Calculator
Cost-plus pricing is a recipe for margin erosion. This calculator works the other way: you decide the margin, and it tells you the price that guarantees it.
ROI Calculator
It is 100% free, private and requires no signup.
Try it nowFrequently Asked Questions
A ROAS above your break-even ROAS is profitable. For a 40% margin, break-even is 2.5x, so aim above that after accounting for all costs.
Margin is profit divided by the selling price. Markup is profit divided by the cost. A 60% margin equals a 150% markup.
Yes — every calculator is 100% free, with no signup, no limit and no hidden cost.
No. All calculations run instantly in your browser. Your inputs are never sent to a server or saved.
They use standard financial formulas and are ideal for estimates. Actual figures can vary due to taxes, fees and local rules, so confirm critical numbers with a professional.
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