Marketing & Advertising
Net Promoter Score Calculator
Calculate valid response total, promoter, passive, and detractor shares, net advocates, and NPS. The custom response composition and -100 to +100 gauge show both the category counts and the resulting score without hiding passives.
Net Promoter Score-
Total valid responses-
Promoters-
Passives-
Detractors-
Promoters minus detractors-
Decision view
NPS response composition and score
NPS response composition and scorePromoter, passive, and detractor shares remain visible beside the complete -100 to +100 score scale.
Exact scenario comparisonPromoter responses (9-10) changes while all other entered assumptions remain constant.
| Promoter responses (9-10) | Net Promoter Score | Total valid responses | Promoters | Passives | Detractors | Promoters minus detractors |
|---|
How to use Net Promoter Score Calculator
- Classify valid responses using the same 0–10 recommendation-question convention.
- Inspect category shares and sample size before interpreting the score.
- Compare only cohorts with aligned wording, channel, customer stage, timing, and sampling design.
Calculator guide
Understanding Net Promoter Score Calculator
Net Promoter Score subtracts detractor share from promoter share while passives remain in the denominator. The score therefore summarizes response mix but does not describe the reasons, uncertainty, or representativeness behind that mix.
Calculation method
How the calculation works
Divide promoter and detractor counts by total valid responses, then subtract detractor percentage from promoter percentage on the -100 to +100 NPS scale. Add all three valid response categories, divide promoters and detractors by that total, and subtract detractor percentage from promoter percentage.
Survey interpretation
Pair the score with evidence that explains it
A score becomes actionable only when the underlying experience is understood.
Worked situations
Practical examples
- 420 promoters, 160 passives, and 120 detractors create 700 valid responses.
- Promoter share is 60% and detractor share is about 17.1%.
- NPS is therefore about 42.9; passives affect the denominator even though they are not subtracted.
Better inputs
Useful tips
- Report response count and category mix beside NPS.
- Read verbatim feedback and operational drivers before choosing an intervention.
- Use confidence intervals or repeated cohorts when small changes could be sampling noise.
Before relying on the result
Limitations and common mistakes
- NPS does not establish loyalty, causation, future revenue, or sample representativeness.
- Benchmarks vary by industry, geography, relationship stage, channel, and survey design.
- The page does not calculate confidence intervals, weights, duplicate suppression, or nonresponse bias.
Reference
Key terms
- Promoter
- Respondent selecting 9 or 10.
- Passive
- Respondent selecting 7 or 8.
- Detractor
- Respondent selecting 0 through 6.
- NPS
- Promoter percentage minus detractor percentage.
Important note
Calculated from the entered campaign values. Validate attribution, incrementality, lag, margin, and observed source data before making decisions.
Frequently asked questions
Do passives count in the formula?
They remain in the denominator but are neither added nor subtracted directly.
Can NPS be negative?
Yes. It ranges from -100 to +100.
Is a higher score always statistically meaningful?
No. Sample size, variability, and collection design affect uncertainty.
Can scores from different surveys be compared?
Only when wording, audience, timing, channel, and methodology are sufficiently aligned.