The 0 to 10 rating behind every Net Promoter Score scale
The NPS Scale Explained
NPS score scale uses an 11-point scale from 0 to 10, split into Detractors (0–6), Passives (7–8), and Promoters (9–10).
The scale runs 0 to 10. The resulting NPS score runs −100 to +100. This page covers both, why the scale is built this way, and how to label it so your scores stay comparable.
The NPS scale at a glance
Respondents pick a number from 0 to 10. Each number falls into one of three bands.
The NPS question
“On a scale of 0 to 10, how likely are you to recommend [company] to a friend or colleague?”
This wording and this scale are the standard. Changing either breaks comparability with industry benchmarks.
What each point on the scale means
The 11 points collapse into three groups. Only two of them count toward your score.
Detractors
Score 0–6
Unhappy customers at risk of churning and spreading negative word of mouth. Seven of the eleven points fall here, which is why NPS is a demanding metric. Counted as negative in the score.
Passives
Score 7–8
Satisfied but unenthusiastic. Not counted in the NPS calculation at all. They are the segment most worth converting to Promoters, and the most vulnerable to a competitor.
Promoters
Score 9–10
Loyal enthusiasts who recommend you unprompted. Only the top two points qualify. Counted as positive in the score. Study what they share to replicate it.
Go deeper on each group in NPS Promoters, Passives, and Detractors explained.
Why the Net Promoter Score scale is 0 to 10
The 11-point scale is not arbitrary. It was chosen for specific reasons that still matter.
It is an 11-point scale, not 10
Zero is a valid answer, so a 0 to 10 scale has eleven points, not ten. Starting at 0 gives respondents a true floor ("not at all likely") and gives you finer resolution at the unhappy end where churn risk lives.
It is granular enough to separate loyalty levels
A 0 to 10 range is wide enough to distinguish a lukewarm 7 from an enthusiastic 10, which a 1 to 5 scale cannot do reliably. That separation is what makes the Promoter, Passive, and Detractor bands meaningful.
It is the global standard
NPS was introduced by Fred Reichheld and Bain & Company using the 0 to 10 scale. Every published benchmark, every competitor score, and every industry average uses it. Switching scales means you can no longer compare your number to anyone else's.
The bands are deliberately demanding
Only 9 and 10 count as Promoters. Seven of the eleven points are Detractors. This strictness is intentional: it stops teams from celebrating mediocre scores and keeps the metric honest about who would actually recommend you.
NPS scale vs NPS score range
These are two different ranges, and mixing them up is the most common NPS confusion. Both matter.
The response scale
0 → 10
What each individual respondent picks when answering the question. Eleven points. This is the “NPS scale” or “NPS rating scale.” It is the input.
The score range
−100 → +100
What your overall NPS can be after the calculation. This is the “NPS score range.” −100 means every respondent is a Detractor; +100 means every respondent is a Promoter. It is the output.
How one becomes the other: NPS = % Promoters minus % Detractors. Each person answers on the 0 to 10 scale, you group the answers into the three bands, then subtract the share of Detractors from the share of Promoters. A 0 to 10 input produces a −100 to +100 output. Try the NPS calculator.
How to label the NPS scale
Only the two endpoints get labels. Getting them right keeps your data clean and comparable.
Do
- ✓Label 0 as "Not at all likely" and 10 as "Extremely likely."
- ✓Leave the middle numbers unlabeled so respondents anchor on the endpoints.
- ✓Keep 10 on the right (high) and 0 on the left (low), the direction people expect.
- ✓Use the same labels every time so results stay comparable across quarters.
Avoid
- ×Labeling every number, which clutters the scale and slows responses.
- ×Reversing the direction so 0 is "very likely." It silently corrupts your data.
- ×Adding a smiley or color scale on top, which biases answers toward the middle.
- ×Switching endpoint wording between surveys, which breaks trend tracking.
The NPS scale vs other rating scales
Teams sometimes try to run NPS on a 1 to 5 or 1 to 10 scale. Here is why that breaks it.
0 to 10 (correct)
The standard NPS scale. Eleven points, bands at 0–6 / 7–8 / 9–10, comparable to every benchmark. This is the only scale that produces a valid Net Promoter Score.
1 to 5
Common for CSAT, wrong for NPS. Five points are too coarse to separate Promoters from Passives, the bands do not map, and you cannot compare the result to any NPS benchmark. If you only have a 1 to 5 scale, you are running CSAT, not NPS.
1 to 10
A frequent mistake. Dropping the 0 removes the true floor and shifts every band by one point, so a "1 to 10 NPS" is not comparable to a real 0 to 10 NPS. Always start at 0.
1 to 7
The CES scale, not NPS. Seven points with agree/disagree wording measures effort, not loyalty. Useful, but it is a different metric with a different question. Do not relabel it as NPS.
Comparing metrics? See NPS vs CSAT and NPS vs CES.
Frequently asked questions
What is the NPS scale?+
The NPS scale is the 0 to 10 rating customers use to answer the Net Promoter Score question, "How likely are you to recommend us?" It has eleven points. Answers are grouped into Detractors (0–6), Passives (7–8), and Promoters (9–10). This response scale is separate from the NPS score itself, which ranges from −100 to +100.
Is the NPS scale 0 to 10 or 1 to 10?+
It is 0 to 10, which is eleven points. Zero is a valid response that gives the scale a true floor of "not at all likely." Using 1 to 10 is a common mistake: it drops the floor and shifts the bands, making your result incomparable to standard NPS benchmarks. Always start the scale at 0.
What is the NPS score range?+
The NPS score ranges from −100 to +100. A score of −100 means every respondent is a Detractor, and +100 means every respondent is a Promoter. This is different from the 0 to 10 response scale that individual customers answer on. The 0 to 10 answers are the input; the −100 to +100 score is the output after you subtract the percentage of Detractors from the percentage of Promoters.
Why does the NPS scale go from 0 to 10 instead of 1 to 5?+
The 0 to 10 scale gives enough granularity to separate enthusiastic Promoters (9–10) from merely satisfied Passives (7–8), which a 1 to 5 scale cannot do reliably. It is also the global standard introduced by Fred Reichheld and Bain & Company, so every published benchmark uses it. A 1 to 5 scale measures CSAT, not NPS.
How should I label the NPS rating scale?+
Label only the two endpoints: 0 as "Not at all likely" and 10 as "Extremely likely." Leave the middle numbers unlabeled so respondents anchor on the ends, and keep 10 on the right. Use the same labels in every survey, because changing the wording or direction breaks comparability across time.
Can I use a different scale and still call it NPS?+
No. Net Promoter Score is defined by the 0 to 10 scale and the Promoter, Passive, and Detractor bands. Change the scale and the result is no longer comparable to any NPS benchmark or to your own historical scores. If you need a 1 to 5 satisfaction rating or a 1 to 7 effort rating, use CSAT or CES instead, which are designed for those scales.