# NPV Calculator > npvcalculator.info is a free online tool to calculate the Net Present Value (NPV) of a series of cash flows, alongside plain-English guides on discounted cash flow, capital budgeting and financial analysis. ## Tools - [NPV Calculator](https://npvcalculator.info/): Free calculator for the Net Present Value of an initial investment and a series of future cash flows at a chosen discount rate. ## Guides - [NPV vs IRR](https://npvcalculator.info/npv-vs-irr/): How Net Present Value and Internal Rate of Return compare, and when to use each. - [How to Calculate NPV in Excel](https://npvcalculator.info/npv-calculation-in-excel/): Step-by-step guide to calculating NPV correctly in a spreadsheet. - [Articles & Guides](https://npvcalculator.info/articles/): Guides on NPV, discounted cash flow and capital budgeting. ## About - [About](https://npvcalculator.info/about/): About the site and its author. - [Privacy Policy](https://npvcalculator.info/privacy-policy/): Data, cookies and advertising policy.