All about HRM Files

The HRM file type is primarily associated with Polar Flow.

HRM	File extension: HRM
	File type:	data file

What is an HRM file?

HRM files mostly belong to Polar Flow. HRM files can refer to several distinct types based on their origin. The most common type stores heart rate data from Polar devices. These files record workout details such as pulse measurements, time stamps, and exercise performance. They can be viewed with specialized software like Polar Flow.
Other uses include:

HIOKI Power Logger files: These contain power quality and measurement data from instruments such as the HIOKI 9624-50. More details are available at HIOKI.

Music Notation files: Employed by Harmony Assistant, these files hold musical scores and notation data. Related details can be found at MuseScore.

FilExt.com note: Each version of an HRM file requires the correct application to display the data properly.

How to open an HRM file

You need a suitable software like Polar Flow to open an HRM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your HRM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a HRM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online HRM Text Viewer

Choose your .hrm file to analyze

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Online File Viewer

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HRM file format:

If you know the file format, you can also find out how to open or edit the file. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So a detailed analysis of a file is vital in order to determine the format and the associated program. In the following you will find our evaluation of the HRM files:

The HRM file extension is used very often and includes a lot of different file formats for different programs. The following file formats are most commonly found in HRM files:

• 20% of all HRM files belong to Polar Heart Rate Monitor format. These files contain text and words as well as binary data. The file size is in the range of 690 bytes to 66 KB. The file type is old but is used even today. Several words can almost always be found in the files, e.g. Date, Length, SMode, StartTime, Version=106, [Params], Lower1=0, Lower2=0, Upper1=0, Upper2=0, Lower3=0, Timer1=00:00:00.0, Upper3=0, Monitor=0 and Interval=5. 20180601.hrm is a typical file name. Such files are related to polar.
• 6% of all HRM files use the same file format, which have the signature HIOKI PW336. These files contain neither text nor words, but only data. The files are often between 64 KB and 30 MB in size. Several words can almost always be found in the files, e.g. HIOKI PW3360-21, Ver2 and Ver3.

All other HRM files (74%) have different formats. Files like these are sometimes linked to man, unlockmeplease, supportdecrypt, firemail, india or hrms. If you want to find out what your HRM file contains, drag and drop it onto this page.