How to get chrome version using command prompt in windows

There's a bug filed about this: https://bugs.chromium.org/p/chromium/issues/detail?id=158372

Original Answer (but see the update below)

What works for me is

wmic datafile where name="C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe" get Version /value

It prints

Version=67.0.3396.99

surrounded by some blank lines.

There are some other suggestions in the bug comments, like querying the registry.

Update

Someone from the Chromium team posted this "totally unsupported" batch file in the bug comment thread:

@ECHO OFF

:: Look for machine-wide Chrome installs (stable, Beta, and Dev).
:: Get the name, running version (if an update is pending relaunch), and
:: installed version of each.
FOR %%A IN (
    {8A69D345-D564-463c-AFF1-A69D9E530F96},
    {8237E44A-0054-442C-B6B6-EA0509993955},
    {401C381F-E0DE-4B85-8BD8-3F3F14FBDA57}) DO (
  reg query HKLM\Software\Google\Update\Clients\%%A /v name /reg:32 2> NUL
  reg query HKLM\Software\Google\Update\Clients\%%A /v opv /reg:32 2> NUL
  reg query HKLM\Software\Google\Update\Clients\%%A /v pv /reg:32 2> NUL
)

:: Look for Chrome installs in the current user's %LOCALAPPDATA% directory
:: (stable, Beta, Dev, and canary).
:: Get the name, running version (if an update is pending relaunch), and
:: installed version of each.
FOR %%A IN (
    {8A69D345-D564-463c-AFF1-A69D9E530F96},
    {8237E44A-0054-442C-B6B6-EA0509993955},
    {401C381F-E0DE-4B85-8BD8-3F3F14FBDA57},
    {4ea16ac7-fd5a-47c3-875b-dbf4a2008c20}) DO (
  reg query HKCU\Software\Google\Update\Clients\%%A /v name /reg:32 2> NUL
  reg query HKCU\Software\Google\Update\Clients\%%A /v opv /reg:32 2> NUL
  reg query HKCU\Software\Google\Update\Clients\%%A /v pv /reg:32 2> NUL
)

That should probably be seen as the right way to go for the time being.

As of today user4851's is still working. I took a look at his linked bug report and the proposed work around did not work for me anymore.

Anways a new hkey is present in my directory which allows you to query the chrome version without being aware of the actual installation location:

reg query "HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon" /v version