  Let F be a nonarchimedean local field, let D be a division algebra over F,
let GL(n) = GL(n,F). Let \nu denote Plancherel measure for GL(n). Each
component \Omega in the Bernstein variety \Omega(GL(n)) has several numerical
invariants attached to it. We provide explicit formulas for the Bernstein
component \nu_{\Omega} of Plancherel measure in terms of these invariants. We
also prove some new formal degree formulas, a transfer-of-measure formula for
GL(n), and a transfer-of-measure formula from GL(n,F) to GL(m,D).
