1 aF (Attofarad) is equal to 0.000000000000000000000000000000000000000001 YF (Yottafarad). To convert from Attofarad to Yottafarad, multiply by 0.0000000000000000000000000000000000000000009999999999999999 or divide by 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000.