.144 — Microsoft Excel 1.0 Spreadsheet

Microsoft · 1987

Developer

Microsoft

Key Features

Stores spreadsheet data, numbers, and basic formulas.
Proprietary binary format developed by Microsoft.
Limited to the features available in Excel 1.0.
Very poor compatibility with modern software.

Best For

Preserving data from the absolute earliest days of personal computer spreadsheets.
A very niche historical software archive.
Understanding the foundational elements of spreadsheet design.

Less Ideal For

Any current data storage or sharing needs.
Collaborative work or editing.
Utilizing modern spreadsheet features like advanced charting or macros.
Ensuring accessibility for most users.

Common Use Cases

Archival of extremely old spreadsheet data.
Historical data recovery from very old systems.
Research into the evolution of spreadsheet software.

How to Open It

Attempt to open in the latest version of Microsoft Excel; it may offer a conversion prompt.
Use a specialized file conversion utility designed for older Excel formats.
If possible, locate and run Microsoft Excel 1.0 in a virtual machine environment for direct opening.

What is a .144 file?

The .144 file extension is an older format associated with Microsoft Excel, specifically version 1.0. This was one of the earliest spreadsheet applications released by Microsoft, aiming to compete with Lotus 1-2-3. Files saved in this format contain raw spreadsheet data, including cell values, formulas, and basic formatting. Due to its age, compatibility with modern spreadsheet software is extremely limited, and direct opening is often not possible without conversion tools or very old software versions.

Programs That Open .144 Files

Platform	Program
Windows	Microsoft Excel	Paid	Official
macOS	Microsoft Excel	Paid	Official

How to Convert .144 Files

Format	Method
.XLSX	Microsoft Excel (via import/save as), Online file converters
.CSV	Microsoft Excel (via import/save as), Online file converters

Common Problems with .144 Files

⚠️ File cannot be opened by modern spreadsheet software.

Use a file converter or attempt to open with a very old version of Excel, potentially in a virtual machine.

⚠️ Data loss or corruption during conversion.

Always back up the original file before attempting any conversion. Use reputable conversion tools.

Frequently Asked Questions

Is .144 a common file format today?▼

No, the .144 format is extremely rare and outdated, originating from the very first version of Microsoft Excel.

Can I open a .144 file on my smartphone?▼

Directly opening a .144 file on a smartphone is highly unlikely. You would need to convert it to a more common format like .xlsx or .csv on a computer first.

What is the difference between .144 and .xlsx?▼

.144 is a proprietary binary format from Excel 1.0 with very limited features, while .xlsx is an open XML-based format used by modern Excel with extensive capabilities.

Technical Details

The .144 format is a binary file structure created by Microsoft Excel 1.0. It stores worksheet data, formulas, and presentation information in a proprietary binary format. Unlike modern Excel files (.xlsx), it does not support advanced features like VBA macros or complex charting elements, and its internal structure is significantly less sophisticated.

Did You Know?

Microsoft Excel 1.0 was originally released for Windows and later for Macintosh.

The .144 extension was one of the earliest default extensions used by spreadsheet applications.

Security Information

As a very old binary format, .144 files are generally considered low risk. However, as with any file from an unknown source, exercise caution and use antivirus software. Be wary of online converters that may bundle malware.