1 PF (Petafarad) is equal to 999,999,999,999,999,800,000,000,000,000,000,000,000 yF (Yoctofarad). To convert from Petafarad to Yoctofarad, multiply by 1,000,000,000,000,000,000,000,000,000,000,000,000,000 or divide by 0.0000000000000000000000000000000000000010000000000000001.