Proton Structure Measurements from HERA to LHC

The inclusive ep neutral and charged current deep-inelastic scattering cross sections are measured in the H1 and ZEUS experiments at HERA, with an electron beam energy of 27.6 GeV and a nominal proton beam energy of 920 GeV and reduced proton beam energies of 575 and 460 GeV. The data span six orders of magnitude in negative four-momentum-transfer squared, Q2, and in Bjorken x. These data are used to determine the proton structure functions and to perform analyses in the QCD framework. The parton distribution functions of the proton, determined in QCD fits, are used for cross section calculations of various processes and for comparisons to data at the LHC.