Net Promoter Score (NPS) is a simple metric that shows how likely your customers are to recommend your brand to others. It’s usually measured by one key survey question: “On a scale of 0–10, how likely are you to recommend us?”
Scores are grouped into detractors (0–6), passives (7–8), and promoters (9–10). The formula subtracts detractors from promoters, giving you a single score between –100 and +100. The higher the number, the more loyal and satisfied your customers are.