  Let $X$ be a $\mathbb{Q}$-factorial klt projective variety admitting an
int-amplified endomorphism $f$, i.e., the modulus of any eigenvalue of
$f^*|_{\text{NS}(X)}$ is greater than $1$. We prove Kawaguchi-Silverman
conjecture for $f$ and also any other surjective endomorphism of $X$: the first
dynamical degree equals the arithmetic degree of any point with Zariski dense
orbit. This generalizes an early result of Kawaguchi and Silverman for the
polarized $f$ case, i.e., $f^*|_{\text{NS}(X)}$ is diagonalizable with all
eigenvalues of the same modulus greater than $1$.
