1 aF (Attofarad) is equal to 0.000000000000000000000000000000000000001 ZF (Zettafarad). To convert from Attofarad to Zettafarad, multiply by 0.000000000000000000000000000000000000001 or divide by 1,000,000,000,000,000,100,000,000,000,000,000,000,000.