1 μmol (micromole) is equal to 0.0000000000000000000000000000009999999999999999 Ymol (yottamole). To convert from micromole to yottamole, multiply by 0.0000000000000000000000000000009999999999999999 or divide by 1,000,000,000,000,000,000,000,000,000,000.