How Long Should a Survey Be? (What 85,900 Responses Show)
In SurveyRock data, about 98% of people who start a survey of up to 15 questions finish it, against 77% for surveys of 16 to 25. What sets the right length, rough starting points, and how to cut a question.
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How long should a survey be? In our data, about 98 percent of people who start a survey of up to 15 questions finish it. At 16 to 25, it's 77 percent.
That's across 85,900 SurveyRock responses. Up to 15 questions, the bars barely move. Longer surveys finish less often, though length may not be the only reason.
There's still no single right length. It depends on who's answering, what they get for it, how the survey reaches them, and the kind of questions: an open-ended answer can take 30 seconds or more.
As a rough starting point, not a rule: customers by email, 10 to 15 questions. Employees on work time, 20 to 35. Inside your product, one to three.
Then cut. For each question, ask what you'd decide differently because of the answer. If nothing, drop it.
SurveyRock's results show the answer rate on every page and the time spent on each question, so you can see where people stall. This is SurveyRock — start free at surveyrock.com.
The survey data shown in this video is a demo account's, not a customer's.