Sample size for Single mean

Input
Type I error - Alpha:
Type II error - Beta:

Mean:
Standard deviation:
Null hypothesis value:
Result
Minimum required sample size:

For details, see the MedCalc manual: Sample size: Single mean.

How to cite this page

MedCalc Software Ltd. Sample size calculator for Single mean | MedCalc. https://www.medcalc.org/en/calc/sample-size-single-mean.php (Version 23.6.1; accessed July 14, 2026)

Trusted by researchers worldwide — download the full MedCalc statistical software and perform advanced statistical analysis in seconds. No registration required.