NPS Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026One survey question, one powerful loyalty metric
Net Promoter Score is based on a single survey question - how likely are you to recommend this to a friend, scored 0-10 - then classifies respondents as promoters (9-10), passives (7-8, excluded from the score), or detractors (0-6).
Worked example
For 60 promoters and 15 detractors out of 100 total respondents:
%Promoters = 60% | %Detractors = 15%
NPS = 60 - 15 = 45.0 (Good, positive score)
| NPS Range | General Interpretation |
|---|---|
| Below 0 | More detractors than promoters |
| 0 - 49 | Good, positive score |
| 50+ | Excellent |
NPS ranges from -100 (every respondent a detractor) to +100 (every respondent a promoter) - unlike percentage-based satisfaction scores, an NPS of 0 is not neutral in the everyday sense, it simply means equal promoters and detractors.