β Net Promoter Score Calculator
One question, three buckets, one number from -100 to 100.
Net Promoter Score
Estimates for planning only, not financial advice.
Net Promoter Score subtracts the percentage of detractors from the percentage of promoters. With 120 promoters, 50 passives, and 30 detractors out of 200 responses, NPS is 60 minus 15: 45. Anything above 50 is great; above 70 is world-class. The score distills "would you recommend us" into the loyalty industry's common currency.
How to Use This Calculator
Enter the count of promoters (scores 9-10), passives (7-8), and detractors (0-6). The calculator returns the NPS from -100 to +100 plus the mix and a plain-English rating.
Tally survey responses into the three buckets. The 0-10 "likely to recommend" question is the standard.
Enter the counts. Passives count in the total but neither add nor subtract.
Read the score and rating. For revenue impact of loyalty, our ROI calculator connects the dots.
The NPS Formula
The asymmetry is deliberate: a 6 is a detractor, not neutral, because lukewarm customers churn and complain. Benchmarks vary wildly by industry (airlines average low, luxury brands high), so compare against your sector, not the absolute scale.
Worked Example
200 responses: 120 promoters (60%), 50 passives (25%), 30 detractors (15%). NPS = 60 - 15 = 45. Rating: good, approaching great. Moving 10 detractors to passive lifts NPS to 50; converting 10 passives to promoters also lifts it to 50. The math shows where effort pays: shrinking detractors and upgrading passives both move the needle.
Reading Your Result
NPS is a thermometer, not a diagnosis: it tells you the temperature, not the disease. The score's real value is the trend and the verbatims behind it. A falling NPS with detractor comments about support wait times is an action plan; a bare number is trivia.
My rule: never manage to the score alone. The classic failure is incentivizing the number, which produces survey gaming (begging for 10s) instead of better service. Instead, close the loop: contact every detractor within 48 hours, fix the systemic issue their complaint reveals, and watch the score follow. Also mind sample bias: only survey reachable, recent customers, and weight by revenue if a few big accounts dominate. A 45 built on 200 responses is signal; a 45 built on 12 is noise. For the economics of keeping customers, our churn rate calculator prices what detractors cost.
Fred Reichheld introduced NPS in a 2003 Harvard Business Review article, "The One Number You Need to Grow," arguing that the recommend question predicted growth better than satisfaction scores. Bain trademarked the system, and it spread from enterprise software to airlines to hospitals. Two decades on, it remains the most widely used loyalty metric in business, for better and worse.
The silent killer of NPS programs is low response rates. If only 10 percent of customers answer, and happy ones answer more, your score describes your fans, not your base. Boost response with short surveys, good timing right after the experience, and a visible "you said, we did" loop. A 40 percent response rate on a simple survey beats a 5 percent rate on a clever one.
Critics note NPS ignores the why, so pair it with Customer Effort Score (how easy was it) and CSAT (how satisfied are you) for triangulation. Reichheld himself later proposed the Earned Growth Rate, measuring revenue from returning customers and referrals, as the accounting-grade complement. The mature approach: NPS for the headline, verbatims for the diagnosis, earned growth for the proof.
Implementation detail that decides success: survey timing. Ask too early and the customer has no opinion; ask too late and the emotion has faded. Transactional NPS goes out within 24 hours of the interaction; relationship NPS runs quarterly or twice yearly. And keep it to two questions, the score plus the why. Every extra question cuts response rates and teaches customers that your surveys are a chore.
Estimates for planning only, not financial advice.
Frequently Asked Questions
How is Net Promoter Score calculated?
% of promoters (scores 9-10) minus % of detractors (scores 0-6). With 60% promoters and 15% detractors, NPS = 45. Passives (7-8) count in the total but do not affect the score directly. Report it as a whole number: NPS 45, never 45.0, by industry convention.
What is a good NPS score?
Above 0 is acceptable, above 30 good, above 50 great, above 70 world-class. But benchmarks differ by industry: compare against your sector's average, since some industries structurally score higher. B2B software often scores 30-60; airlines struggle to break 20: context rules.
What is the NPS survey question?
'How likely are you to recommend us to a friend or colleague?' on a 0-10 scale. It is usually followed by an open-ended 'why' question whose answers matter more than the number. Follow it with 'what is the main reason for your score': the verbatim is the gold.
Why are 7s and 8s called passives?
They are satisfied but unenthusiastic: they stay for now but will not advocate for you and will switch for a better offer. Moving passives to promoters is often the cheapest NPS gain. Passives are switchers-in-waiting: a competitor's coupon converts them instantly.
Why is a 6 a detractor?
Because research showed scores of 0-6 correlate with churn and negative word of mouth, while only 9-10 predicts real advocacy. The buckets reflect behavior, not symmetric arithmetic. Reichheld's research tied 9-10 scores to actual referral behavior: the buckets are empirical.
How many responses do I need?
Enough for stability: 100+ per segment for directional reads, more for precise tracking. Small samples swing wildly; track trends over quarters rather than obsessing over single surveys. Response bias skews results: happy customers answer more, so weight by segment or revenue to correct it.
What are the criticisms of NPS?
It compresses rich feedback into one number, cultural response biases skew scores across countries, and tying compensation to it invites gaming. Use it as a trend indicator alongside verbatims, not a standalone target. NPS 3.0 adds earned growth rate: Reichheld's own fix for the metric's flaws.
How do I improve my NPS?
Close the loop with detractors fast, fix the systemic issues their feedback reveals, and upgrade passives with small delights. The score follows operational fixes; campaigns to 'raise the score' without fixes backfire. Close the loop within 48 hours: speed of response predicts score recovery.
Should NPS affect employee bonuses?
Carefully. Tying pay to the number incentivizes survey manipulation over service improvement. If used, pair it with audit controls and qualitative measures, and reward closed-loop behavior, not the raw score. Link bonuses to closed-loop actions taken, not to the score itself.
How does NPS relate to revenue?
Promoters buy more, stay longer, and refer others, so NPS correlates with growth in many studies. Quantify it for your business by comparing lifetime value and referral rates across the three buckets. Detractors cost 2-3x their revenue in support load: the math favors fixing them.