A daily updated filename extension database!

MAS file extension

The table below provides useful information about the .mas file extension. It answers questions such as:

  • What is the .mas file?
  • What program do I need to open a .mas file?
  • How can the .mas file be opened, edited or printed?
  • How can I convert .mas files to another format?

We hope you find this page helpful and a valuable resource!

2 extension(s) and 0 alias(es) found in database

✅ Lotus Freelance Graphics Smartmaster File

MAS file is a Lotus Freelance Graphics Smartmaster File. Lotus Freelance Graphics is an information graphics and presentation program developed by Lotus Software. Lotus Freelance Graphics is a part of the Lotus SmartSuite.
MAS format description not yet available
Category: Graphic files
Application: Lotus SmartSuite
Mime-type: application/vnd.lotus-freelance
Magic number: -
Magic string: -
Sample: -
MAS aliases:
MAS related links:
MAS related extensions:
Lotus Freelance Graphics Scene

Lotus Freelance Graphics Symbol

Lotus Freelance Graphics 96 Presentation

Lotus Freelance Graphics Presentation

Lotus Organizer Data

Lotus Organizer 4 Data

Lotus Organizer 97 Data

Lotus Organizer 2 Data

Lotus Freelance Graphics Diagram

Lotus Freelance Presentation

✅ Microsoft Access Stored Procedure

MAS file is a Microsoft Access Stored Procedure. The stored procedure is a set of Structured Query Language (SQL) statements that you assign a name to and store in a database in compiled form so that you can share it between a number of programs.
Category: Document files
Application: Microsoft Access
Mime-type: application/vnd.ms-access
Magic number: -
Magic string: -
Sample: -
MAS aliases:
MAS related links:
MAS related extensions:
Lotus Approach 97 Document

Microsoft Access Form

Microsoft Access Macro

Microsoft Access Query

Microsoft Access Report

Microsoft Access Table

Microsoft Access Add-in

Microsoft Access Database

Microsoft Access Blank Database Template

Microsoft Access Wizard Template

Other types of files may also use the .mas file extension.

🚫 The .mas file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ams, as, has, jas, las, ma, ma5, mac, mae, maq, maw, max, maz, mqs, ms

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Autodesk 3D Studio Max Scene
Atari 8-bit XL-Paint MAX Image
PaperPort Image
ArcVIEW Geocode ODB Index
Velvet Studio Music Module
IAR System C-SPY Macro Definition Data
IBM MDWorkbench MQL Script
Autodesk Maya 3D ASCII Scene
Lidar Data Exchange Format File
Maxwell Render Scene

🔴 Can't open a .mas file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .mas file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .mas file extension, write to us!

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