Increase in customer demand for durable and functional fabric has been created an opportunity for nanomaterials to be integrated onto the textile substrates. we have fabricated a single step approach for electrically conductive textile for large scale production of reduced graphene oxide (rgo) nanosheets coated cotton cloth based films for heat generation application. it can be used as electro thermal wearable body warmer, in many industrial and laboratory applications. the rgo nanosheets aqueous dispersion was successfully prepared by solution mixing of rgo in n-methyl-2-pyrrolidone (nmp) using ultra sonication process. for the fabrication of rgo coated cotton cloth, the heating element film formation is carried out by dip coating method. the thickness of the heating element film is around 200 µm. as-prepared rgo nanosheets and rgo coated textile (cotton) cloth were characterized using xrd, fe-sem techniques for their structural and surface morphology analysis. the rgo coated cotton cloth based electro thermal film annealed at 80º c temperature showed a good heating performance. saturated temperature of around 52º c, 56º c and 62º c were attained when 40v is applied for 1 min, 5 min and 5 min under vacuum respectively to the fabricated device. it has been observed that, the power drawn by the device at 40 volts was 480mw. the temperature rise and drop are of all voltages at maximum 3 mins to stabilize the fabricated devices. when heating element device ambient goes down to the environmental conditions (around 20 ᵒc) to lower side like 15 ᵒc, 0 ᵒc,-15 ᵒc,-25 ᵒc and -35 ᵒc, higher voltage is required to maintain at 20 ᵒc. by comparing the above conditions of the heating element performance, it is evident that a moderate input voltage supply will be sufficient to maintain the needed comfortable temperature of 20 ᵒc. the nanomaterials offer wide potential applications when integrated with garments that can be used to sense and respond to external parameters like electrical, optical and physiological signals. importantly, the direct use of the aqueous dispersion of rgo in nmp opens up a new window for the next generation innovative wearable textile electronic devices. however, the field of nanotechnology, by considering the features of the textiles due to light weight, corrosion free, chemical stability for biomedical, automobile, flexible electronics for wearable technology etc. applications.