Download NCSS / PASS Professional 2023 v23.0.2

Download NCSS + PASS Professional 2023


NCSS software provides a complete and easy-to-use collection of hundreds of statistical and graphics tools to analyze and visualize your data.

A robust statistical and graphics program, NCSS is used in a variety of industries from medical investigation and business analytics, to engineering, quality control, and academic research. Learn why thousands of researchers, consultants, professionals, engineers, and scientists are using NCSS worldwide.

NCSS software for data analysis comes complete with integrated documentationfree training videos, and full phone and email support from a team of PhD statisticians.


PASS software provides sample size tools for over 1030 statistical test and confidence interval scenarios – more than double the capability of any other sample size software. Each tool has been carefully validated with published articles and/or texts.

PASS comes complete with integrated documentation and PhD statistician support.

PASS has been fine-tuned for over 20 years, and is now the leading sample size software choice for clinical trial, pharmaceutical, and other medical research. It has also become a mainstay in all other fields where sample size calculation or evaluation is needed.

Download NCSS + PASS Professional 2023

Download NCSS Professional 2023

Download PASS Professional 2023

install NCSS / PASS

Installation instructions: see file readme.txt


Some software requires:

  • Disable anti-virus software when unpack and install
  • Add installation directory to exclusions