<p>The machining of titanium grade 5 is a big challenge for manufacturers due to its low thermal conductivity. Machining titanium with some cutting fluids and coated tools shows better performance in terms of surface quality and tool life from the literature. In this present study, Ti–6Al–4V was machined under emulsion and cryogenic environments with coated and uncoated cutting tools. The surface quality of machined part and cutting forces were observed. From the results, it is observed that the cryogenic environment with a coated tool shows better performance than the emulsion condition. The less cutting forces and the high-surface quality of machined work material were observed with the machining parameters being <i>V</i>_c = 90 m/min, <i>d</i> = 0.5 mm and <i>f</i> = 0.102 mm/rev. To reduce the cost of machining trials, the grey relation analysis was adopted to get better machining parameters.</p>