This result states moser interior gradient estimate for minimal graphs: given u: B(x 0,R) R be a function in C 2(B(x 0,R)) solving the minimal surface equation div ( u 1+| u| 2 )=0 on B(x 0,R) R n. There exists a constant C=C(n)>0 such that B(x 0,R/2).... It is useful in the structure and regularity of minimal surfaces, where variational identities, curvature estimates, and compactness arguments control geometric objects.