What is customer effort score

Four clicks to find the refund page. Two forms with duplicate fields. A support chat that transfers you twice before anyone helps. The customer did not leave angry. They just felt tired.

That tired feeling is what customer effort score captures. It measures friction, not emotion. Here is what CES means, how the formula works, and why reducing effort keeps customers coming back.

What is customer effort score?

A customer effort score measures how much effort a customer had to expend to complete an interaction, resolve an issue, or accomplish a task with your business.

The CES score is based on a single question asked after an interaction. How easy was it to [complete your task]? Customers respond on a scale, typically from very difficult to very easy.

The customer effort score formula

Calculate CES by averaging all responses on your scale. On a seven point scale where seven means very easy, a CES of 5.8 means customers generally found the task manageable but not effortless.

Some teams convert CES to a percentage by counting the top two ratings as "low effort" responses. Divide low effort responses by total responses and multiply by 100.

Example: 65 out of 80 respondents rated six or seven. CES percentage equals 81 percent low effort.

When to use CES

Customer effort score works best for interactions where ease directly affects retention.

1. Checkout and payment

High effort at checkout leads to abandoned carts. Measure CES after purchase to catch friction early.

2. Support resolution

Ask how easy it was to get help after a support ticket closes. High effort here predicts churn even when the issue was resolved.

3. Self service tasks

Account updates, password resets, and order tracking should require minimal effort. CES reveals when self service tools confuse instead of help.

CES complements CSAT scores and NPS in your customer satisfaction metrics toolkit.

Why reducing effort matters

Research consistently shows that low effort experiences drive loyalty more than delight. Customers who find your business easy to use return and recommend you. Customers who struggle leave even if they were eventually satisfied with the outcome.

Fix effort problems by simplifying forms, reducing steps, and making help visible. Every field you remove and every click you save lowers CES.

Frequently asked questions