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Calculators / Business / Net promoter score from counts
Net promoter score from counts calculator
Calculate a net promoter score from counts in the three standard response groups.
On this page
Net promoter score45points
Promoter share60%
Detractor share15%
Total responses100
Calculator controls
How to calculate
Calculate a net promoter score from counts in the three standard response groups.
Net promoter score =
100*(promoters-detractors)/(promoters+passives+detractors) pointsPromoter share =
100*promoters/(promoters+passives+detractors) %Detractor share =
100*detractors/(promoters+passives+detractors) %Total responses =
promoters+passives+detractorsWorked example
- Promoter responses (9–10): 60
- Passive responses (7–8): 25
- Detractor responses (0–6): 15
- Net promoter score: 45 points
- Promoter share: 60 %
- Detractor share: 15 %
- Total responses: 100
Assumptions and limits
Use one survey question and period with disjoint response groups. The score ranges from -100 to 100 points and is not a response rate, satisfaction percentage or causal measure.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Calculate a net promoter score from counts in the three standard response groups. Passive responses remain in the denominator. Subtract the detractor percentage from the promoter percentage.
When this tool is useful
Passive responses remain in the denominator. Subtract the detractor percentage from the promoter percentage.
Understanding your inputs
| Input | Example |
|---|---|
Promoter responses (9–10) promoters | 60 |
Passive responses (7–8) passives | 25 |
Detractor responses (0–6) detractors | 15 |
Frequently asked questions
What assumptions should I check?
Use one survey question and period with disjoint response groups. The score ranges from -100 to 100 points and is not a response rate, satisfaction percentage or causal measure.
How can I check the result?
Start with the labelled example. Keep units consistent, calculate without intermediate rounding and change one input at a time. The diagram explains the model; the result table supplies the numerical answer.