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.

Last updated: 2026-09-17

What Is NPS (Net Promoter Score)?

NPS (Net Promoter Score) is a customer loyalty metric that measures how likely your customers are to recommend your product or service to someone else. It's built on a single question — "How likely are you to recommend this to a friend or colleague?" — answered on a scale of 0 to 10. Based on the score they give, each respondent falls into one of three groups: Promoters (9-10), Passives (7-8), and Detractors (0-6).

This tool does the counting for you: just enter how many people gave each score, and it automatically works out the share of promoters and detractors and calculates NPS = % of Promoters − % of Detractors. Passives don't appear directly in that formula, but they're still part of the total valid response count, so a large passive group quietly shrinks both the promoter and detractor percentages and nudges the overall score toward zero. NPS is most valuable when it isn't treated as a one-off snapshot — measuring it regularly and watching the trend over time tells you far more than any single reading.

How to Calculate Your NPS

Run the survey Ask your customers "How likely are you to recommend this to a friend or colleague?" and collect a score from 0 to 10 for each response.
Tally the responses Group the responses by score and count how many people answered with each value from 0 through 10.
Enter the counts above Type the number of respondents for each score into the input fields at the top of this page.
Check the results instantly As you type, the shares of promoters, passives, and detractors and the overall NPS score update automatically in real time.
Read the rating category Your NPS value is automatically labeled Excellent, Great, Good, or Needs Improvement, giving you a quick sense of where you stand.

Tips for getting more out of it

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.

Ways to Use NPS

SaaS churn prevention and customer success

Survey customers ahead of contract renewal, then follow up personally with anyone who lands in the detractor group — this surfaces early warning signs of churn before it happens.

Retail and e-commerce satisfaction tracking

Send an NPS question after a purchase or store visit, then compare scores across locations and time periods to pinpoint where service or product selection needs work.

Ongoing internal measurement (eNPS)

Swap the question to "How likely are you to recommend this company as a place to work?" and the exact same formula doubles as an employee engagement metric (eNPS).

Measuring the impact of new features or campaigns

Compare NPS before and after a feature launch or marketing campaign to get a quantitative read on how the change affected customer loyalty.

Reporting to leadership and investors

Because NPS boils loyalty down to a single number, it's well suited as a recurring KPI in quarterly business reviews and investor updates, where trend lines matter more than any one data point.

NPS Glossary

Promoter: A respondent who gave a score of 9 or 10 on the 0-10 survey. Promoters are highly satisfied with your product or service and tend to actively recommend it to others.
Detractor: A respondent who gave a score of 0 to 6. Detractors are dissatisfied and may spread negative word of mouth; this group is considered at high risk of churning.
Passive: A respondent who gave a score of 7 or 8. Passives look reasonably positive on paper, but they lack the enthusiasm of promoters and are relatively more likely to switch to a competitor.
NPS (Net Promoter Score): The percentage of detractors subtracted from the percentage of promoters. The result ranges from -100 to +100 and serves as a headline indicator of customer loyalty.
Loyalty (customer loyalty): The degree of attachment and trust a customer feels toward a company or brand — the psychological bond behind repeat purchases, continued use, and word-of-mouth recommendations.
Churn (churn rate): The proportion of customers who cancel or stop using a service within a given period. Customers classified as detractors in an NPS survey are known to be at elevated risk of churning.
eNPS (Employee Net Promoter Score): A metric that applies the NPS formula to the question "How likely are you to recommend this company as a place to work?" in order to measure employee engagement.
Benchmark: A reference value, such as an industry average or a competitor's NPS, used as a point of comparison when evaluating your own score.

Frequently Asked Questions

As general benchmarks, 0 or above is considered positive, 30+ is "Great," 50+ is "Excellent," and 70+ is considered world-class. Benchmarks vary a lot by industry, so it's more useful to compare your score against your own history or direct competitors than against an absolute number.

Passives are not used directly in the formula (promoter % minus detractor %), but they are counted in the total valid responses. A higher share of passives shrinks both the promoter and detractor percentages relative to the total, pulling the overall NPS closer to zero.

Research behind NPS found that respondents who scored 7 or 8 out of 10 were still significantly more likely to switch to a competitor than those who scored 9 or 10. Even though the number looks favorable, it doesn't reflect the same level of enthusiastic loyalty.

There's no strict minimum, but with a small sample a single response can swing the score sharply. A common rule of thumb is to wait until you have at least 30-50 responses before drawing conclusions.

A negative NPS means detractors (0-6) outnumber promoters (9-10). This usually signals a structural problem with customer satisfaction, and it's worth reviewing detractor feedback in detail to identify what to fix.

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.

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