Development of cracks is the most common cause of premature deterioration in structures. For the design of reinforced concrete structures, crack width is one of the most important factors to be considered. It also affects the serviceability of reinforced concrete members. This paper presents the experimental study on crack width evaluation of R.C beams and comparison with various international codes. Following international codes: Eurocode2 1992-1 (2009), Egyptian Code ECP203-2007, ACI Code 318-95, 318-05, BS 8110-1997/IS: 456-2000 was used to calculate the crack width for comparison purpose.