Net Promoter Score Calculator
Passives count in the denominator and nowhere else.
Net promoter score
34
51.2% promoters, 17.1% detractors
Passives count in the denominator and nowhere else, which means a shift from passive to promoter moves the score and a shift from detractor to passive moves it just as much. The score is also unstable at low response counts — below a few hundred responses, a handful of detractors swings it by ten points.
How the Net Promoter Score Calculator works
NPS discards the passives from the score while keeping them in the denominator, which makes it unusually sensitive to small shifts. At low response counts a handful of detractors swings it by ten points, so the number needs volume before it means anything.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
How is NPS calculated?
The percentage of promoters (9-10) minus the percentage of detractors (0-6). Passives (7-8) are counted in the total but contribute nothing to the score.
What is a good NPS?
It varies enormously by industry and by country — some cultures rate lower across the board. Compare against your own trend and against direct competitors, never against a global benchmark.
How many responses do I need?
Enough that a few responses do not move it. Below a couple of hundred, the score is dominated by noise and should not be reported to two decimal places.
What is the follow-up question worth?
More than the score. The number tells you something changed; the free text tells you what. Most of the value in an NPS programme is in reading the comments.
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