Cracks in concrete structures significantly compromise their load-bearing capacity and durability, often resulting in premature structural failures. These cracks primarily arise due to plastic and drying shrinkage, posing a major challenge to the longevity of concrete structures. Enhancing the resistance of concrete to crack formation is thus critical to improving its performance. This study investigates the potential of fiber-reinforced concrete (FRC) using synthetic fibers, specifically Recron 3 S, which is primarily composed of polypropylene and known for its high tensile strength. The study focuses on evaluating the fresh and hardened properties of FRC of M20 Grade, as well as assessing crack propagation in terms of crack length, crack mouth opening displacement (CMOD), and crack depth. Polypropylene fibers of 12 and 25 mm in length were incorporated into the concrete at dosages of 0.5%, 0.75%, and 1.0% by volume, maintaining an aspect ratio (L/D) of 200 and a random fiber orientation. Experimental results indicated that the 25 mm polypropylene fiber, at a 1.0% dosage, achieved the highest flexural strength, while the 12 mm fiber exhibited superior crack resistance. This research highlights the effectiveness of polypropylene fibers in enhancing both the mechanical properties and crack mitigation of concrete, providing a valuable approach to improving its structural integrity.