1 amol (attomole) is equal to 0.000000000000000000000000000000000000001 Zmol (zettamole). To convert from attomole to zettamole, multiply by 0.000000000000000000000000000000000000001 or divide by 1,000,000,000,000,000,100,000,000,000,000,000,000,000.