"Size Matters (Someday)" is a song written by Byron Hill and Mike Dekle and recorded by American country music artist Joe Nichols.

It was released in January 2006 as the second single from Nichols' album III.

The song depicts a woman who, despite having ambitious material goals for the future, only wants a man to love her for right now.

The music video was directed by Warren P. Sonada and premiered in April 13, 2006.

Billboard Hot Country Songs for the week of January 28, 2006.