NPS (Net Promoter Score) Calculator | Free Customer Loyalty Metric
Enter response counts for a 0-10 recommendation survey and instantly get promoters, passives, detractors, and your Net Promoter Score (NPS) for free. See your customer loyalty at a glance.
Tips
- NPS benchmarks vary widely by industry and region, so the most useful way to read your score is to track it over time against your own past results.
- With a small sample size, a single response can swing the score dramatically. Collect at least 30-50 responses before drawing conclusions.
- Passives (7-8) are excluded from the NPS formula itself, but they still count toward the total responses — a high passive share dilutes both the promoter and detractor percentages, pulling NPS toward zero.
- When tracking NPS over time, keep the exact wording and distribution channel of the survey consistent, or the results won't be comparable across periods.
Frequently Asked Questions
Side Note — Why NPS Is Just a Simple Subtraction
The Net Promoter Score was introduced in 2003 by American consultant Fred Reichheld in a Harvard Business Review article titled "The One Number You Need to Grow." After analyzing hundreds of customer satisfaction metrics, he found that a single question — "How likely are you to recommend this company to a friend or colleague?" — correlated more strongly with company growth than any other metric he tested.
The NPS formula is a deliberately simple subtraction: the percentage of promoters minus the percentage of detractors. Ignoring the passive middle group might seem odd, but it's intentional. Reichheld wanted to strip away the vague "somewhat satisfied" middle ground common in satisfaction surveys and boil customer sentiment down to a clear behavioral signal — would they actively recommend you, or not — that executives could act on without ambiguity.
NPS ranges from -100 to +100, and a score at or above zero means promoters outnumber detractors. Benchmarks vary widely by industry — retail and consumer services tend to score higher, while telecom and financial services tend to score lower. In practice, it's more useful to track your own trend over time or compare against direct competitors than to judge a single absolute number in isolation.