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File conversion

Convert OTMU to OPJU

Verified by Adam B.· reviewed by FE Editorial ·updated Jun 24, 2026
QUICK ANSWER
Is it possible to convert OTMU to OPJU?
Yes - OTMU converts to OPJU.

An .otmu file is only a matrix template: it holds sheet layout, math and formatting but no data. In OriginLab Origin you create a new matrix from the template, fill it with data, then use File: Save Project As to write an .opju project. The template alone never becomes a project.

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert OTMU to OPJU?

People keep reusable matrix templates but ultimately need a saved, self-contained Origin project to store the actual matrices and any graphs. An .opju project bundles the matrix window(s) and data together, which a bare template cannot do.

How to convert OTMU to OPJU

OriginLab Origin (apply template, save project) PAID

Open the template with File: New: From Template (or File: Open) to spawn a matrix window, add your data, then choose File: Save Project As and pick Origin Project (*.opju).

OriginLab OriginPro PAID

Same workflow in OriginPro: instantiate the .otmu template as a matrix, populate it, and use File: Save Project As to produce the .opju.

About these formats

.OTMU Origin Unicode Matrix Template

An OTMU file is a matrix-book template created by OriginLab's Origin, the scientific graphing and data analysis application. It stores the layout of a matrixbook (sheet count, dimensions,…

Open .OTMU details →
.OPJU OPJU File

A .OPJU file is a data file used by specific software.

Open .OPJU details →

Quality & what to watch

  • The template carries no data, so the resulting .opju only contains what you actually import or type into the matrix.
  • Both files are proprietary to Origin 2018 and later; nothing outside Origin reads either one.
  • Saving as .opju keeps everything, but the project cannot be opened in Origin 2017 or older.

Frequently asked questions

Can I convert an .otmu directly to an .opju?
No. A template only defines structure and formatting, so you must first create a matrix from it and add data before saving a project.
Which software do I need?
OriginLab Origin or OriginPro 2018 or later, the only applications that read .otmu and write .opju.
Does the template's formatting survive in the project?
Yes, the matrix layout, math functions and style from the template are applied to the matrix stored in the .opju.
Can I open the .opju in an older Origin?
No, Unicode .opju projects require Origin 2018 or newer.