This paper represents the improvement of power quality using Unified Power Quality Conditioner(UPQC). In modern days the use of power electronic converters has increased a lot which causes power quality issues and affects the equipment. Unified power quality conditioner is to mitigate the various concerns related to power quality such as harmonic current,voltage imbalance,sag and swell phenomena and reactive power compensation. The extensive simulation results are verified in matlab 2015a software. The simulation results are verified output voltage, output current and THD. By the results it is clear that using UPQC THD value reduced and achieved high capability of mitigating the harmonic current, voltage and current sag or swell and obtained improved power quality.