TNS File

What are TNS files and how to open them

Are you having problems opening a TNS file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a TNS file?

A .TNS file is a TI-Nspire Document file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open TNS files

Important: Different programs may use files with the TNS file extension for different purposes, so unless you are sure which format your TNS file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different TNS openers which you will find listed below.

Last updated: January 5, 2020

Various apps that use files with this extension

These apps are known to open certain types of TNS files. Remember, different programs may use TNS files for different purposes, so you may need to try out a few of them to be able to open your specific file.

TI-Nspire CAS Student SoftwareTI-Nspire CAS Student SoftwareUser submitted
TI-Nspire Student SoftwareTI-Nspire Student SoftwareUser submitted
TI-Nspire CAS Teacher SoftwareTI-Nspire CAS Teacher SoftwareUser submitted
FX AccuChartsFX AccuChartsUser submitted
TI-NspireTI-NspireUser submitted
TI-Nspire CASTI-Nspire CASUser submitted
TeleTrader ProfessionalTeleTrader ProfessionalUser submitted
Tonus ApplicationTonus ApplicationUser submitted
TI-Nspire CAS Teacher EditionTI-Nspire CAS Teacher EditionUser submitted
TiLP2TiLP2User submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about TNS file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.