1. Download Linqer http://www.sqltolinq.com/
2. Install and open Linqer.
3. Create connect to MS SQL (I have not tried other DB).
4. Click file new.
5. You can create SQL statement through View using SQL Management Studio.
6. Copy the statement to Linqer and click convert.
Watch the video below.
Note: Not all the SQL statement can be converted.