In a broadcast interview, Trump said without the Fed's rate hikes last year and moves to trim its bond holdings, the economy, as measured by the gross domestic product, would have grown by over 4 percent.
The GDP on an annualized basis grew by a solid 2.9 percent last year and when measured from the fourth quarter of 2017 to the fourth quarter of 2018, growth was an even stronger 3.1 percent.
Trump's comments came in an interview with Fox Business Network's Maria Bartiromo on Thursday. The network released excerpts and the interview will be broadcast Friday.
The Federal Reserve on Wednesday cut its expectations for future rate hikes from two this year to none and also announced a plan to end shrinking its balance sheet in September.
Asked if he felt he had an impact on these decisions, Trump said he had been right but whether his criticism had been a factor in the Fed's decision "it doesn't matter. I don't care if I influenced or not."
Fed Chairman Jerome Powell has said the Fed's major shift from hiking interest rates to declaring a long pause in further rate hikes was prompted by a slowing global economy and rising risks to U.S. growth with Trump's pressure having no impact.
Trump on Thursday also held a closed-door meeting with top business executives at the headquarters of the Business Roundtable near the Capitol. The association was holding its quarterly meeting with an estimated 100 chief executive officers from businesses across the United States.