1 Enter your population size

* Everyone in the group you want to study, e.g. all 1,240 employees of a company.

💡 What does this table keep fixed?

Krejcie & Morgan fix the confidence level at 95% and the margin of error at 5%, so there is nothing to adjust — that is why it is so easy to use. If you want to choose your own margin of error, use the Taro Yamane formula instead.

Minimum sample size

278

A population of 1,000 matches a row in the table exactly.

Confidence level 95% (e = 5%)

Text for your report (Chapter 3)

The population of this study consisted of 1,000 people. The sample size was determined using the Krejcie and Morgan (1970) table at a 95% confidence level and a 5% margin of error, which gives a minimum sample of 278 respondents. To allow for incomplete or unusable responses, an additional 10% was added, for a total sample of 306 respondents.

ⓘ This free tool helps with a first calculation. Khontob does not guarantee the results or any outcome of using them. Before using them in your research, please check them against the original software or textbook and with your advisor.