We present results of theoretical calculation of the equation of state of Al covering several orders of magnitude of density and temperature. The data is generated using a QEOS model. The QEOS data have been used to calculate U _s – U _p and P − V hugoniots. The calculated hugoniots show good agreement with the experimental hugoniots. The cold curve generated by QEOS model has been compared with FP-LAPW results for compressed states and good agreement has been found. The QEOS data has also been compared with AIMD simulation results for expanded states – agreement is not good. These comparisons confirm that QEOS results are accurate for compressed states and less accurate for low temperature expanded states of Al.