ATLAS jet energy scale calibration and uncertainties with 13 TeV

Run-2 at the LHC made a step to newer frontiers of proton-proton collisions at highest energies yet available. Collimated sprays of hadrons, called jets, remains the dominant feature at the collisions. Jets are playing a key role in many physics analyses and searches of new phenomena, e.g. ATLAS jets measurements are used to constrain the parton densities. This leads to the high priority role of jet energy scale (JES) calibration and getting valid knowledges on the uncertainties of the measurements.