I have created a multi tab Putting Speed Calculator Spreadsheet on Google Drive.
The instructions are on the first tab (Template)
As is, you can download as an Adobe PDF file.
You can get your own editable version by copying to Google Drive or downloading as an Excel Spreadsheet.
All I ask is please do not directly edit the file as it exists on my Google Drive. This is so others will have access to a correct working version.
The protected areas (grey) will disappear when you make your own copy.
Here is the link: http://goo.gl/GZ8iYO
I hope you find this helpful,
- Mark