ROI Calculator

Work out return on investment, net profit, and annualized ROI.

Runs in your browser — nothing is sent or saved.

How to work out ROI

  1. Enter the initial investment.
  2. Enter the final value.
  3. Add the years held for an annualized figure.
  4. Read the ROI percentage and the net profit.

The ROI formula

Return on investment measures profit against what you put in. The formula is simple: ROI equals the gain divided by the initial cost, as a percentage, which is the profit percentage on what you put in. So if you invest 1,000 and it becomes 1,500, the profit is 500 and the ROI is 50%. This ROI calculator does that and shows the net profit alongside the percentage, so you see both the size and the rate of the return.

Why annualized ROI matters

A plain ROI ignores time, so a 50% return over one year and over ten years look the same even though the first is far better. Annualized ROI fixes that by spreading the return across the years held, giving a per-year rate you can compare fairly between investments of different lengths. Enter a holding period and the tool adds this figure.

What ROI does not capture

ROI is a clean headline, but it leaves things out. It ignores fees, taxes, and the effort or risk involved, and a simple ROI does not account for money added or taken out along the way. Use it as a quick comparison, and look deeper before making a decision on a single number.

An estimate, not financial advice

This calculates ROI from the figures you enter and does not include fees or taxes. Investments carry risk and past returns do not predict future ones. This is not financial advice.

FAQ

How do I calculate ROI?

Subtract the initial cost from the final value to get the profit, divide by the initial cost, and multiply by 100. The tool does this and also shows the net profit.

What is a good ROI?

It depends on the investment, the risk, and how long you held it. A higher ROI is better, but compare it against the time taken and safer alternatives, which is why the annualized figure helps.

What is annualized ROI?

The return expressed as a per-year rate over the holding period, so investments of different lengths can be compared fairly. Enter the years held to see it.

Does ROI include fees and taxes?

Not here. This is a gross ROI from the numbers you enter. Real returns are lower once fees and taxes are taken out.

Is my information private?

Yes. Everything is calculated in your browser and nothing you enter is uploaded or saved.