999,999,999,999,999,900,000,000,000,000,000,000,000,000 yfl oz
1 Efl oz (Exaounce) is equal to 999,999,999,999,999,900,000,000,000,000,000,000,000,000 yfl oz (Yoctoounce). To convert from Exaounce to Yoctoounce, multiply by 999,999,999,999,999,900,000,000,000,000,000,000,000,000 or divide by 0.000000000000000000000000000000000000000001.