At a Glance
- Net Promoter Score measures customer loyalty by asking how likely respondents are to recommend your brand, using a single 0-to-10 question.
- Your NPS score is calculated by subtracting the percentage of Detractors from the percentage of Promoters; Passives count toward the base but are excluded from the formula.
- Scores range from -100 to +100; context and industry comparison matter as much as the number itself.
- A good NPS score varies significantly by industry; a score of 40 may be strong in telecommunications and unremarkable in consumer software.
- Tracking NPS over time on a consistent cadence is more valuable than any single score measurement.
Net Promoter Score (NPS) is one of the most widely used metrics in customer experience research. It gives organizations a simple, repeatable way to measure customer loyalty and benchmark performance over time. But while the question itself is straightforward, NPS score calculation is often misunderstood, and a score without context can be more misleading than useful.
This guide explains exactly how NPS is calculated, walks through practical examples, identifies what good scores look like across industries, and covers how to use NPS as a tracking tool rather than a one-time measurement.
What Is NPS?
Net Promoter Score (NPS) is a customer loyalty metric built around a single survey question that sorts all respondents into three distinct groups based on their rating: Promoters (9 to 10), Passives (7 to 8), and Detractors (0 to 6), with the final score calculated entirely from the gap between the first and last group.
The survey question is: “On a scale of 0 to 10, how likely are you to recommend this company, product, or service to a friend or colleague?”
Respondents are grouped into three categories:
- Promoters (9 to 10): Loyal customers likely to recommend your brand and contribute to growth through word-of-mouth referrals and reduced churn rate
- Passives (7 to 8): Satisfied but unenthusiastic customers who are vulnerable to competing offers and unlikely to actively advocate for your brand
- Detractors (0 to 6): Unhappy customers who are unlikely to recommend your brand and may actively discourage others, representing your core retention and reputation risk
Passives are excluded from the NPS calculation. The score is determined entirely by the gap between your Promoters and your Detractors.
To learn more about NPS scores, read our blog post, Net Promoter Score (NPS): What It Measures, What It Misses, and Why It Still Matters.
The NPS Score Calculation Formula
The NPS score calculation formula is: NPS = % Promoters – % Detractors, expressed as a whole number ranging from -100 to +100, where Passives are counted in the total respondent base but excluded from the formula itself.
The result can range from -100, which occurs when every respondent is a Detractor, to +100, which occurs when every respondent is a Promoter. A score of 0 means your Promoter and Detractor percentages are exactly equal.
To calculate the percentages, divide the number of responses in each group by the total number of respondents and multiply by 100. The total includes Passives; they are counted in the denominator but not in the formula itself.
NPS Calculation: A Step-by-Step Example
NPS calculation follows three steps: compute the Promoter percentage from all respondents, compute the Detractor percentage from all respondents, then subtract Detractors from Promoters; Passives count toward the denominator but not the formula.
Suppose you collect 200 NPS survey responses with the following breakdown:
- Promoters (9 to 10): 110 respondents
- Passives (7 to 8): 50 respondents
- Detractors (0 to 6): 40 respondents
- Step 1: Calculate the Promoter percentage. Divide Promoters by total respondents: 110 / 200 x 100 = 55%
- Step 2: Calculate the Detractor percentage. Divide Detractors by total respondents: 40 / 200 x 100 = 20%
- Step 3: Subtract Detractors from Promoters. 55 – 20 = NPS of 35
In this example, the NPS is 35. The 50 Passives are included in the denominator when calculating percentages but do not appear in the final formula. A larger Passive segment drives down both the Promoter and Detractor percentages, which can moderate the score in either direction, an important reason to track the Promoter and Detractor percentages separately, not just the final NPS.
How to Interpret Your NPS Score
NPS interpretation requires industry context; a score above 0 means more customers are loyal than dissatisfied, but what constitutes strong performance varies significantly by category, making your direct competitor set and your own historical trend the most reliable benchmarks.
As a general guide, scores tend to fall into the following tiers:
- Above 0: More customers are loyal than dissatisfied; the minimum baseline for a healthy score
- 30 to 50: Reflects solid customer loyalty; a common target for established brands across most sectors
- 50 to 70: Considered strong performance in most industries
- Above 70: Exceptional loyalty, typically seen in best-in-class consumer brands
- Below 0: More Detractors than Promoters, signaling meaningful risk to retention and brand reputation
These tiers are a starting point, not a standard. A score of 35 in one industry may be exceptional; in another, it may be below average. The only interpretation that fully matters is how your score compares to others in your category and how it moves over time.
NPS also tells you nothing about why customers feel the way they do, which segments are driving Detractor rates, or what specific experiences are influencing loyalty. Adding an open-ended follow-up question to your NPS survey asking respondents to explain their score significantly increases the diagnostic value of the data and enables closed-loop feedback with Detractors.
What Is a Good NPS Score? Industry Benchmarks
A good NPS score is always relative to industry and direct competitors; retail and e-commerce brands typically score 45 to 65 while telecommunications providers average 15 to 30, making the same absolute score strong in one category and below average in another.
Industries with high emotional engagement or strong switching costs tend to produce higher NPS scores. Industries with commoditized offerings or unavoidable friction, such as utilities or insurance, tend to score lower. The following ranges reflect general industry averages based on commonly cited benchmarks:
- Technology and software: typically 35 to 55
- Retail and e-commerce: typically 45 to 65
- Financial services and banking: typically 30 to 45
- Healthcare: typically 25 to 40
- Telecommunications: typically 15 to 30
- Insurance: typically 20 to 35
- Travel and hospitality: typically 35 to 55
These ranges are directional. The most meaningful benchmark is always a direct competitor in your specific market segment. Know your category before drawing conclusions from the number alone.
How to Track NPS Improvements Over Time
Tracking NPS over time transforms a single loyalty snapshot into a diagnostic instrument; consistent measurement on the same methodology reveals whether product, service, or experience changes are improving the underlying drivers of customer loyalty or simply producing short-term score fluctuations.
Run NPS Surveys on a Consistent Cadence
Consistency in cadence and methodology is the foundation of useful NPS tracking. Transactional NPS surveys, sent shortly after a specific interaction such as a purchase or support call, capture sentiment while the experience is fresh. Relational NPS surveys, run on a regular schedule such as quarterly or annually, measure overall loyalty across the customer base. Both are valid; the right choice depends on what you are trying to learn. Whatever cadence you choose, keep it consistent so results are comparable across periods.
Segment Your Results
Aggregate NPS scores can mask important variation across your customer base. A company-level score of 40 might reflect a score of 65 among long-term customers and 15 among customers who joined in the past six months. Segmenting results by customer tenure, product line, geography, or acquisition channel reveals where loyalty is strong and where it needs attention. This is where NPS shifts from a reporting metric to a diagnostic instrument.
Pair NPS with Qualitative Feedback
The score tells you the magnitude of loyalty or dissatisfaction. The open-ended follow-up tells you why. Analyzing the language in verbatim responses, particularly from Detractors, surfaces the specific drivers of poor sentiment that the score alone cannot identify. Over time, tracking whether those themes diminish as NPS improves confirms whether your interventions are working or simply reflecting broader market changes.
Set Internal Benchmarks and Track Movement
Rather than benchmarking exclusively against industry averages, set internal targets based on your own historical performance. A consistent improvement of five to ten points over a 12-month period is a more meaningful indicator of progress than whether you are above or below a category average. Track the score, the Promoter percentage, and the Detractor percentage separately, because the same overall NPS can result from very different underlying distributions.
Frequently Asked Questions
How is NPS score calculated?
NPS is calculated by subtracting the percentage of Detractors from the percentage of Promoters. Detractors are respondents who score 0 to 6, Passives score 7 to 8, and Promoters score 9 to 10. Passives are counted in the total number of respondents when calculating percentages but are excluded from the formula itself. The result is a whole number between -100 and +100.
What is a good NPS score?
A good NPS score depends on your industry and direct competitive set. Scores above 0 indicate more loyal customers than dissatisfied ones, scores in the 30 to 50 range reflect solid loyalty in most sectors, and scores above 70 are considered exceptional. The most useful benchmark is how your score compares to direct competitors in your market and how it trends over time.
What is the difference between Promoters, Passives, and Detractors?
Promoters are respondents who score 9 or 10 and are considered loyal advocates. Passives score 7 or 8 and are satisfied but not enthusiastic. Detractors score 0 to 6 and are unhappy customers who may discourage others from choosing your brand. Only Promoters and Detractors factor into the NPS score calculation.
How often should you measure NPS?
The right cadence depends on your research goals. Transactional NPS surveys are sent shortly after a specific customer interaction and capture immediate sentiment. Relational NPS surveys run on a regular schedule, such as quarterly or annually, to track overall loyalty across the customer base. Consistency matters more than frequency: measuring at regular intervals using the same methodology is what makes scores comparable over time.
Can NPS be negative?
Yes. An NPS score below 0 means your percentage of Detractors exceeds your percentage of Promoters. A negative score signals meaningful risk to customer retention and brand reputation and is a strong indicator that the underlying drivers of dissatisfaction need to be identified and addressed through closed-loop feedback and root-cause analysis.
