IRR Calculator

Approximate IRR from cash flows (one outflow + inflows).

Frequently asked questions

What does the IRR Calculator do?

Approximate IRR from cash flows (one outflow + inflows). Enter your values and get an instant estimate in your browser — free, with no signup.

Is the IRR Calculator free to use?

Yes. OpenCalcy calculators are free to use, work on mobile, and keep favorites privately in your browser.