Survey4Kash Sample size calculator

5% is a common choice


The margin of error is the amount of error that you can tolerate.

Lower margin of error requires a larger sample size.

Typical choices are 90%, 95%, or 99%


The confidence level is the amount of uncertainty you can tolerate.

Higher confidence level requires a larger sample size.

How many people are there to choose your random sample from?

Leave this as 50%


For each question, what do you expect the results to be?

Your recommended sample size is


This is the estimated minimum recommended sample size of your survey. If you create a sample of this many individuals and receive answers from everyone, you're more likely to obtain a right answer than you would from a big sample when just a tiny proportion of the sample responds to your survey.

Margin error calculator

With a sample size of With a confidence level of
Your margin of error would be
Your sample size would need to be
This sample size calculator computes the critical value for the normal distribution.

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