How much does a bowling ball weigh in milligrams?

OK, IF AN ONZE WEIGHT IS 27.37 GM AND 16 ONZES IS EQUAL TO A POUND THEREFOR A POUND WEIGHTS 454 GM. SO, YOU MULTIPLY 0.454 KG TO THE NUMBRER OF POUNDS OF ANY BALL WEIGHT. EXAMPLE 0.454 x 15 = 6.810 KG. I HOPE, THAT THIS ANSWER HAS HELPED YOU TO KNOW HOW MUCH DOES A Bowling BALL WEIGHT IN METRICAL MEASUREMENT. ALEX SANCHEZ MEXICAN BOWLING TEAM COACH.