Inwords is a plugin which, as its name suggests, converts numbers into words for Microsoft Word. This is particular useful if you have lots of conversions to make everyday.
It works perfectly for the English language.
Fully compatible with Microsoft Word 2007. It should work on Word 2010 and above as well.
Readme instructions available for easy installation.
Here is a video demo: https://youtu.be/BZTYt_dyojs
You will be redirected to a download page after checkout.