Participating IHOP restaurants will serve the free pancakes from 7 a.m. to 10 p.m. Those eating them will be asked to make a voluntary donation to Children's Miracle Network Hospitals.
The chain began the tradition in 2006, and claims to have raised nearly $8 million to support charities in the communities in which it operates.
Children's Miracle Network Hospitals raises money for children's hospitals in the United States.
Last year, IHOP served an estimated 4 million free pancakes on National Pancake Day, according to restaurant officials.
