How to Measure NPS in 60 Seconds With a Free NPS Survey Tool
TL;DR: Net Promoter Score (NPS) measures customer loyalty on a −100 to +100 scale. To measure it, ask customers "How likely are you to recommend us?" on a 0–10 scale, then subtract the percentage of detractors (0–6) from the percentage of promoters (9–10). With Revuloop's free NPS survey tool, you can create a live NPS survey with no signup, share it by link or QR code, and see your score in about 60 seconds.
Quick answer — What is a good NPS score? Any score above 0 is good, above 30 is great, and above 70 is world-class. NPS ranges from −100 (every customer is a detractor) to +100 (every customer is a promoter).
What is NPS (Net Promoter Score)?
Net Promoter Score (NPS) is a customer-loyalty metric that measures how likely your customers are to recommend your product or service to others. It's captured with a single question — "How likely are you to recommend us to a friend or colleague?" — answered on a 0-to-10 scale.
Based on their answer, every respondent falls into one of three groups:
- Promoters (9–10): Loyal enthusiasts who fuel growth through referrals.
- Passives (7–8): Satisfied but unenthusiastic — vulnerable to competitors.
- Detractors (0–6): Unhappy customers who can damage your brand through negative word of mouth.
NPS is popular because it's simple, benchmarkable across industries, and correlates strongly with retention and growth.
How is NPS calculated? (Formula + example)
The NPS formula is: NPS = % Promoters − % Detractors. Passives are counted in the total but don't affect the score directly.
Here's a worked example. Suppose you collect 100 responses:
- 60 promoters → 60%
- 30 passives → 30%
- 10 detractors → 10%
NPS = 60% − 10% = +50.
The result is always a whole number between −100 and +100 (it's a net percentage, not a raw average). Revuloop's tool calculates this automatically as responses arrive, so you never touch a spreadsheet.
Note on sample size: NPS becomes statistically stable at around 30+ responses. Below that, treat your score as directional, not definitive.
What is a good NPS score?
There's no universal pass/fail line, but these are the widely accepted bands for interpreting a raw NPS score:
- 70 to 100 — Excellent: World-class loyalty; customers actively refer you.
- 30 to 69 — Great: Strong loyalty; you have more promoters than detractors.
- 0 to 29 — Good: Positive, but with clear room to improve.
- Below 0 — Needs improvement: More detractors than promoters — act now.
Context matters: a "good" NPS in a competitive industry may look different from one in a niche B2B market. The most useful comparison is your own score over time — is it trending up or down?
How to run an NPS survey for free in 60 seconds
You don't need a paid platform or an account to start. Here's the exact process with Revuloop's free NPS survey tool:
Step 1 - Create your survey (no signup)
Go to the NPS survey tool, optionally enter your company name to personalize the question, and click Create my free NPS survey. Your survey goes live instantly — no account, no credit card.
Step 2 - Share the link or QR code
You'll immediately get a shareable link and a downloadable QR code. Email it, drop it in a chat, add it to a receipt, or print the QR for events and in-store feedback. Customers answer in one tap.
Step 3 - See your live NPS results
As responses come in, open your results page. Enter your email once to unlock your live NPS score and the full promoter / passive / detractor breakdown.
That's it — a real, shareable NPS survey and a live score in about a minute.
What to do after you measure NPS
A score is only the starting point. The real value is closing the loop — turning feedback into action:
- Follow up with every detractor. A fast, personal response can turn an unhappy customer into a loyal one.
- Learn from promoters. Ask your 9s and 10s for reviews, referrals, and testimonials.
- Track the trend. One score is a snapshot; the trend line is the story.
When you're ready to go beyond a single survey, a free Revuloop account lets you keep this survey and all its responses, watch your NPS trend over time, and automatically open a follow-up case for every detractor with Revuloop CX — so no unhappy customer slips through the cracks.