The effect of feeding broiler chicks on diets containing different levels of garlic powder as natural feed additive on productive performance, carcass characteristics and economical efficiency were studied. A total of one hundred and sixty one-day old, unsexed (Habbard) broiler chicks were randomly divided into four experimental groups. Each group was further subdivided into five replicates eight chicks per pen in complete randomized design. The birds were fed on two basal diets (starter and finisher). The garlic powder (Allium sativum) was added to the basal diets at (0.0, 2.0, 3.0 and 4.0%) levels resulting in four formulae respectively to groups A, B, C and D with group A serving as control group. The experimental diets were fed for 6-weeks duration. Health of the stock and performance parameters were recorded. At the end of the experiment, the birds were slaughtered, dressed for estimating the different parameters economical evaluation was also calculated. The results showed that, the diet with 3% garlic powder had significantly (P<0.05) heaviest body weight gain, highest feed intake, best feed conversion ratio with highest dressing and breast percentages. The birds fed on control group produced significantly (P<0.05) highest abdominal fat percentage. The mortality rate was not affected significantly by the addition of garlic powder in broiler diet. The highest profitability ratio (1.30) was recorded by the diet with 3% garlic powder as compared to other experimental diets.