The optical and electrical characteristics of Au-Ag nanoalloys at various volume ratios were investigated in this study. By directly irradiating the gold and silver ions with a femtosecond laser, they were transformed to nanoparticles. Within a quartz cuvette, the samples were subjected to radiation for 10 minutes. For each individual sample, the optical property associated with the peaks of Localized Surface Plasmon Resonance (LSPR) was examined. In addition, the colloids' electrical conductivity was determined by estimating their zeta potential using the dynamic light scattering (DLS) method. The results show that as the volume percentage of Ag and Au in the Au-Ag nanoalloy changed, the LSPR peak shifted to 409 nm for Ag and 530 nm for Au. The progression of the transformation was practically linear. The conductivity measurement shows that Au0Ag100 Ag nanoparticles have the highest value, whereas Au100Ag0 Au nanoparticles have the lowest value. Au-Ag nanoalloy values vary from Au0Ag100 to Au100Ag0. Our findings show that the optical and electrical properties of Au-Ag nanoalloys can be easily altered by varying the volume fractions of the two components.