Im 18years old and my height is 178cm.......will i be able to reach atleast 183cm??

Maybe, esp. if:: Most men stop growing between ages 18-21, so there is a reasonable chance you'll grow some more, though it is more likely to be 1-3 cm than 5 cm or more. However, there are known cases of people growing 10 cm or more after 18, but these are rare. See http://tinyurl.com/nx5qmvb for steps you can take that may help you to grow taller and https://www.youtube.com/watch?v=b73LhEoLzoQ for role models.

Height grwth: Height growth In males usually stops by the age of 16 – 18 years, in rare occasions may continue growing up to the age of 20 – 21 years of age. Once the oseophyes the growth in height stops. You still can grow with exercising your muscles by going to gym, eating healthy, do not smoke, and most of all is gene dependent.