Original: A standard ice hockey puck is black , 1 inch ( 25 mm ) thick , 3 in ( 76 mm ) in diameter , and weighs between 5.5 and 6 ounces ( 156 -- 170 g ) ;[ ] some pucks are heavier or lighter than standard ( see below ) .
Simplified: A standard ice hockey puck is black , 1 inch thick ( 25.4 mm ) , 3 inches in diameter ( 76.2 mm ) , and weighs between 5.5 and 6 ounces ( 156-170 g ) .