NPS calculator

It takes Total responses, Promoters (9–10) and Detractors (0–6) and derives Net Promoter Score from them. The calculation is live as you type, so the result updates on every change.

3 values: Total responses, Promoters (9–10) and Detractors (0–6). Nothing else is required — no account, no file upload.

With Total responses = 100, Promoters (9–10) = 60 and Detractors (0–6) = 15, the calculator returns Net Promoter Score = 45. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

Scaled down to Total responses = 50, Promoters (9–10) = 30 and Detractors (0–6) = 8, Net Promoter Score comes out at 44. The relationship is worth checking at both ends before you rely on a single result.

Before and after a campaign: turning a target into a daily budget, comparing two channels on the same basis, and deciding whether the return justifies continuing.

Judging ROAS without subtracting the cost of goods. A 3× return on ad spend is a loss whenever the margin is under a third — the ratio says nothing about profit on its own.

This one returns Net Promoter Score; the ARPU calculator returns Average revenue per user. That is the whole difference — open the one whose figure you need.

Average order value (AOV) calculator is the closest one after this: Compute your average order value from total revenue and number of orders.

Impressions from reach and frequency and Lead-to-customer rate calculator — they come up in the same task often enough to be worth a second tab.

The formulas are the industry-standard ones every ad platform uses; the inputs come from your own reporting. Platforms differ in attribution window and in what counts as a conversion, so figures rarely reconcile exactly between them.