Payback Period Calculator — free online

Before you spend money on a machine, a project or any kind of investment, there's one simple question you really want answered: how long until I get my money back? Working that out by hand gets messy fast, especially when the money comes in unevenly year to year. We added a free tool that does it for you — Payback Period Calculator — right in your browser.

What it does

You enter what you put in at the start, then the money coming back each period. It works out the payback period — how long until those returns add up to what you spent. It handles even cash flows (the same amount each time) and uneven ones (a different amount each period), so it fits a steady return or a lumpy one.

Nothing leaves your device

The whole thing runs in your browser. Your numbers stay on your screen — nothing is uploaded to a server, nothing is saved anywhere. Close the tab and it's gone. A quiet way to test figures you'd rather keep to yourself.

How to use it

  1. Open Payback Period Calculator in your browser.
  2. Enter your starting investment, then the cash coming back each period.
  3. Read how long it takes to pay back.

It's free with no limit. There are more small tools on the Apps page.

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