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By using the free trial software, you agree to use it for evaluation purposes only. It is not to be used for actual research, study planning, or otherwise, whether academic, commercial, government or education.

Your trial license key will be sent to this email.
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Free Trial

The PASS 2024 free trial gives you an opportunity to evaluate the software (with a restriction on alpha) before you purchase it.

When you click the download button with a valid email address, you can begin downloading the PASS 2024 sample size software setup file.

You will receive an email with your trial license key that allows you to evaluate the software for 30 days. If you choose to purchase the software, you can use the license key you receive to convert the trial version into the fully-functional version. You will not need to reinstall PASS 2024 sample size software after you purchase a license.

We’ll periodically send you emails with product information and tutorials to get you started. You can unsubscribe at any time. Your email address will never be sold or given to a 3rd party.

PASS 2024 will never collect nor transmit any data or settings that you input into the software, any data related to intermediate calculations, nor any output data or results that are generated by the software. PASS 2024 will report the types and frequency of the procedures and tools being used. This will help us better understand which procedures and tools are most-often used and identify potential improvements.

PASS 2024 is compatible with Windows only. Click here for a complete list of system requirements.

A Windows emulator (such as Parallels) is required to use PASS 2024 on a Mac. Click here for more information.

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Get help downloading the PASS Free Trial by contacting us.

I adore NCSS and PASS. I have been using them for 20 years now.

Mario Martinez Gonzalez, MPH, FEE, MD, Universidad Nacional Autonoma de Mexico

"We have used your product for almost 20 years... It has been a vital part of the research initiatives we have conducted over the years. Through each version of NCSS, we have been able to count on its user-friendly design, broad range of statistical tools and a high level of very personalized customer support..."

Dr. George Ebra, Dr. Debra Guest, Research