Introduction: Understanding sleep habits and their impact on overall sleep quality is essential for promoting better health outcomes. This study investigates the relationship between sleep habits & sleep quality as measured by the Pittsburgh Sleep Quality Index (PSQI). The PSQI is a standardized tool used to evaluate sleep quality & disturbances over a one-month period. By analysing the sleep patterns of a diverse sample population, we aim to identify common factors contributing to poor sleep quality and to examine how various lifestyle habits impact these outcomes. Methods: This cross-sectional study was conducted in Dehradun, Uttarakhand, using a self-rated online survey form with 340 pharmacy students selected through multistage random sampling. Data were collected via Google Forms, and sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI), which includes seven components: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction. The total score of these components provides a global sleep score, with a score greater than 5 representing poor sleep quality. Result: In this study involving 340 students (72.4% male, 27.6% female) with a mean age of 20 years (SD ± 1.88), revealed significant insights into their lifestyles and sleep patterns. Sleep quality varied, with 46.5% reporting good subjective sleep quality and 43.5% experiencing poor sleep quality. Additionally, 67.1% of participants fell asleep within 15 minutes, and 45% slept for 5-6 hours. Sleep efficiency was high for most, with 76.5% maintaining over 85% efficiency. The mean GPSQI score was 4.5794 (SD ± 2.61), with 49.1% scoring above 5, indicating generally good sleep quality among the participants. Conclusion: The study on pharmacy students' sleep habits revealed that a slight majority experienced good subjective sleep quality, though nearly as many reported poor sleep quality. Most students fell asleep within 15 minutes and slept for 5-7 hours, maintaining high sleep efficiency. Few used sleep medications or had significant daytime dysfunction. The mean Global Pittsburgh Sleep Quality Index (GPSQI) indicated a balanced split between good and poor overall sleep quality.