The conventional hydrodistillation method (CH) produces a lesser amount of the vetiver oils, as well as the absence of stirring in the round bottom flask, which may also cause burning. To overcome these problems, a method has been adapted using a modified conventional hydrodistillation (MCH) by using heating plate with a magnetic stirrer. The yield and composition of vetiver/khus oil with the modified method increased along with an increase in the amount and number of chemical molecules, as seen by GC-MS. The vetiver oil was extracted by MCH shows 58 molecules while 45 molecules from CH method can be observed in the oil gas chromatogram mass spectrometry. This method has better potential in the pharmaceutical industry, cosmetic and perfumery industries dueto the ease of extraction and isolation.