NPS, CSAT, and CES: what each measures and when to use it
Three experience metrics, three different questions. Here's what each one captures, how it's calculated, and at which point in the customer journey it's best to use it.
When you start measuring customer experience, three acronyms show up almost immediately: NPS, CSAT, and CES. They don’t compete with each other; they answer different questions. Choosing the right one for each moment is what makes your numbers actually mean something.
CSAT — Were you satisfied?
The Customer Satisfaction Score measures satisfaction with a specific interaction: a purchase, a support query, a meal. It’s usually asked with a scale (1 to 5, or faces) right after the experience.
- Typical question: “How satisfied were you with your visit today?”
- Calculation: the percentage of satisfied responses (for example, 4 and 5) out of the total.
- When to use it: immediately after a concrete touchpoint.
It’s the most intuitive metric and the easiest to act on operationally, because it’s tied to a specific moment.
NPS — Would you recommend us?
The Net Promoter Score measures loyalty and willingness to recommend. It’s based on a single question with a 0-to-10 scale, and it classifies people into three groups:
| Group | Score | What it means |
|---|---|---|
| Promoters | 9–10 | They actively recommend you |
| Passives | 7–8 | Satisfied, but not enthusiastic |
| Detractors | 0–6 | At risk of speaking poorly of you |
The calculation is straightforward:
NPS = % Promoters − % DetractorsThe result ranges from −100 to +100. Unlike CSAT, NPS looks at the whole relationship, not a single interaction. Use it at intervals (for example, after several visits) rather than after every ticket.
CES — How easy did we make it for you?
The Customer Effort Score measures how much effort it took the customer to get what they wanted: solving a problem, finding a table, completing a process.
- Typical question: “How easy was it to resolve your request?”
- When to use it: after processes where friction is the main risk —support, returns, lines, booking an appointment.
The underlying idea: reducing effort tends to predict loyalty better than surprising the customer with extras.
So, which one do I use?
It’s not a single choice. The healthy way to look at it:
- CSAT to take the operational pulse, moment by moment.
- NPS to read the health of the relationship over time.
- CES to detect and eliminate friction in specific processes.
The best metric is the one you’re going to act on. A flawless NPS that nobody reviews is worth less than a modest CSAT that triggers improvements every week.
The detail that ties them together
Any of the three loses value if the response doesn’t reach the person who can act in time. Measuring is the first step; what moves the business is closing the loop: reading the response, resolving it, and letting the customer know. Start with one metric, one question, and one touchpoint, and grow from there.