Net Promoter Score Calculator

Net Promoter Score Calculator: calculate net promoter score for your business. Formula, benchmarks, and practical tips included.

Net Promoter Score (NPS) is a customer loyalty and satisfaction metric derived from a single survey question: "How likely are you to recommend us to a friend or colleague?" Respondents score 0–10; those scoring 9–10 are Promoters, 7–8 are Passives, and 0–6 are Detractors. NPS = % Promoters − % Detractors, producing a score from −100 to +100. Originally developed by Fred Reichheld and Bain & Company in 2003, NPS has become the most widely used customer experience metric globally. Profit Margin Calculator and Markup Calculator provide complementary customer experience perspectives.

Enter the total number of survey responses, or enter separate counts for Promoters (9–10), Passives (7–8), and Detractors (0–6).
% Promoters = Promoter count ÷ Total responses × 100.
% Detractors = Detractor count ÷ Total responses × 100.
NPS = % Promoters − % Detractors.
Track NPS monthly or quarterly; follow up all Detractor responses within 48 hours to understand root causes.

NPS formula

NPS = (Promoters ÷ Total) × 100 − (Detractors ÷ Total) × 100

Worked example: 200 responses. 90 score 9–10 (Promoters). 60 score 7–8 (Passives). 50 score 0–6 (Detractors). NPS = (90/200 × 100) − (50/200 × 100) = 45 − 25 = 20.

Interpreting NPS scores

NPS benchmarks by industry

General NPS benchmarks: below 0 — critical, major customer experience issues; 0–20 — needs improvement; 20–50 — good; 50–70 — excellent; above 70 — world-class. Industry averages (Bain NPS Prism, 2023): software/SaaS approximately 35–45; financial services approximately 30–40; telecommunications approximately 15–25; airlines approximately 20–35; retail approximately 40–55; healthcare approximately 30–40. Compare against your industry benchmark rather than the absolute scale.

Business tips and best practices

Always follow up Detractor responses with an outreach call or email within 48 hours — the closed-loop process is where NPS generates real value, not just the number itself.
Segment NPS by customer type, product line, and interaction channel to identify where experience is weakest.
Track transactional NPS (after a specific interaction) separately from relational NPS (overall brand sentiment) — they measure different things.

Apple's consumer NPS has historically been in the 70–80 range — one of the highest for any large technology company.
A 7-point increase in NPS correlates with approximately a 1% increase in revenue growth for most businesses in Bain's research database.
Companies in the top NPS quartile of their industry grow revenue approximately 2× faster than median performers (Bain & Company research).

Common mistakes to avoid

Treating NPS as the only customer experience metric — NPS is a single question covering loyalty intent; it does not capture the root causes of satisfaction or dissatisfaction.
Ignoring Passives — Passives are potential Promoters or Detractors depending on their next experience; understanding their feedback is valuable for preventing churn.
Survey timing bias — NPS immediately after a positive onboarding experience will be higher than after a billing dispute; measure at consistent, representative points in the customer journey.

NPS® is a registered trademark of Bain & Company, Inc., Satmetrix Systems, Inc., and Fred Reichheld. Customer survey data is subject to data protection and privacy law in most jurisdictions — ensure consent and data handling comply with GDPR, CCPA, or equivalent applicable regulations. NPS scores used in external marketing must be accurate and not misleading under consumer protection law.