  The calibration and performance of the LHCb Calorimeter system in Run 1 and 2
at the LHC are described. After a brief description of the sub-detectors and of
their role in the trigger, the calibration methods used for each part of the
system are reviewed. The changes which occurred with the increase of beam
energy in Run 2 are explained. The performances of the calorimetry for $\gamma$
and $\pi^0$ are detailed. A few results from collisions recorded at $\sqrt {s}$
= 7, 8 and 13 TeV are shown.
