1 EF (Exafarad) is equal to 1,000,000,000,000,000,000,000,000,000,000,000,000,000 zF (Zeptofarad). To convert from Exafarad to Zeptofarad, multiply by 1,000,000,000,000,000,000,000,000,000,000,000,000,000 or divide by 0.0000000000000000000000000000000000000010000000000000001.