Financial Engines 10-Q 2017 Q3 Quarterly report

Exhibit 32.1

I, Lawrence M. Raffone, the president and chief executive officer of Financial Engines, Inc. (the “Company”), certify for the purposes of section 1350 of chapter 63 of title 18 of the United States Code that, to my knowledge:

(i) The Quarterly Report of the Company on Form 10-Q for the quarterly period ended September 30, 2017 (the “Report”) fully complies with the requirements of section 13(a) of the Securities Exchange Act of 1934, and

(ii) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 2, 2017

/s/ Lawrence M. Raffone

Lawrence M. Raffone

President and Chief Executive Officer

(Principal Executive Officer)