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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 16 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 16 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 16 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 16 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 16 on a Mac. Click here for more information.

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Your support is always amazing. I also run [another statistical software package] and on a support / admin basis you guys are way ahead.

Neale Penman, Researcher

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