Net Promoter Score calculator

NPS comes from one survey question: how likely are you to recommend us, from 0 to 10? Enter how many people answered in each band and get your score, from -100 to +100.

NPS calculator

—NPS
—Promoters
—Passives
—Detractors
—Responses

Count every response in the total, including passives, even though they don't move the score up or down.

NPS = % promoters − % detractors

With 140 promoters, 90 passives and 45 detractors out of 275 responses, that's 51% minus 16%, so an NPS of +35. The result is a number, not a percentage, and it runs from -100 (everyone is a detractor) to +100 (everyone is a promoter).

GroupScoreWhat they're assumed to do
Promoters9–10Buy again and recommend you
Passives7–8Satisfied but unenthusiastic, easily swayed by a competitor
Detractors0–6Unhappy, and may put others off

A score without the reasons is a thermometer.

NPS tells you how many people feel positive, not why. It also only hears from customers who answered a survey, which skews towards the very happy and very unhappy, and it misses everyone who never bought or quietly left.

The unprompted version of that feedback is already public. Reviews, Reddit threads and social posts describe what promoters love and detractors hate, in their own words and without a survey. Reading them next to your NPS is what turns the number into something you can act on. See how in the guide to brand sentiment analysis.

Compare your own trend

Illustrative example

Q1+26
Q2+31
Q3+35

Measure the same customers another way.

Questions about NPS

How do you calculate NPS?
Ask customers how likely they are to recommend you on a 0–10 scale. Percent who answered 9 or 10 are promoters and percent who answered 0 to 6 are detractors. Subtract the detractor percentage from the promoter percentage.
What is a good NPS score?
Anything above zero means more promoters than detractors. Beyond that, what's considered good differs by industry and by how the survey is run, so track your own score over time and compare with published benchmarks for your sector only as a rough guide.
Why aren't passives in the formula?
They're neither actively recommending nor criticising you, so they're left out of the subtraction. They still count in the total responses, which is why a large passive group drags both percentages down.
How many responses do I need?
More is better, and the score gets noisy on small samples. With only a few dozen responses, a handful of answers can swing it by many points, so treat the number as directional.

Hear what promoters and detractors say without a survey.

No credit card. 7-day free trial.