NPV Calculator

Calculate Net Present Value (NPV) from a discount rate and a series of cash flows.

Project Snapshot

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Positive NPV means the project adds value at the chosen discount rate.

Present value by period

Discount rate (%)

Enter an annual discount rate (percent).

Cash flows (t0, t1, t2...)

Paste one value per line (or use commas). Start with initial investment at t0 (often negative).

NPV

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Discount rate

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Periods

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Tip: If your cash flows are monthly, use a monthly discount rate (annual rate / 12) and treat each line as a month.

Result—

Example: rate 10%, cash flows -1000, 300, 400, 500 → NPV ~65

Formula

NPV = Σ CFₜ / (1 + r)ᵗ