The effect of pressure on the volume in the liquid phase for two ethyl alkanoic acid esters, the propionate and butyrate, has been measured relative to the volume at 0.1 MPa with a bellows volumometer for pressures up to 380 MPa over the temperature range (278.15 to 338.13) K. The experimental volume ratios have been represented by two sets of equations to enable interpolation and extrapolation of volumetric properties. One set enables intercomparison of the volume ratios for the two esters and with literature data for ethyl acetate. The comparison permits volumetric data for all three liquids to be generated with reasonable accuracy from those for ethyl propionate by making an allowance for the number of -CH2 groups in the alkanoic acid segment of the ester. A. small modification of the predictive method enables calculation, with lesser accuracy, of volumetric data for methyl, propyl, and butyl acetates. Isothermal compressibilities, isobaric expansivities, and the change in the isobaric heat capacity from its value at 0.1 MPa have been calculated for both esters from the volumetric data.