Survey sample size calculator
Find out how many responses your survey, questionnaire or online form needs to give reliable results. Free, instant and no sign-up.
Your survey
Your result
385
Completed responses for 95% confidence and a 5% margin of error.
1,284
Based on a 30% response rate.
What is a survey sample size calculator?
A survey sample size calculator tells you how many people need to complete your survey for the results to represent your whole audience. It uses your population size, confidence level and margin of error to give a statistically sound target, so you can collect enough responses from your form without over-surveying.
Customer and user surveys
Know how many customers need to answer before you act on satisfaction or NPS results.
Research and education
Plan questionnaires for studies, classes and student feedback with a defensible sample.
Employee feedback
Size internal surveys for teams of any size, from a small department to a whole company.
Online forms
Set a response target for your Google Form or BeeForm and see when you have enough data.
Collect your responses with BeeForm
Once you know your target, BeeForm makes it simple to reach it. Build a branded survey, share it, and watch your response count grow.
Create your survey
Start from a survey template or a blank form and add your questions.
Share the link
Send the form by email, chat or your website. Every answer is saved automatically.
Track progress
Compare your response count with the target from this calculator.
Review responses
Open the responses page in BeeForm to see answers and analytics, and export them when you need the counts.
Ready to collect your responses?
Build a beautiful form with BeeForm, share it, and track responses as they come in.