For example, the smallest amount of Bitcoin is one Satoshi or 0.00000001 BTC. What is the smallest amount of Ether and what is it called?


2 Answers 2


The smallest unit of ETH is called Wei, and is 1x10^-18 ETH, i.e.

1 Wei = 0.000000000000000001 ETH
  • 1
    The units in the equation need to be swapped :)
    – jeff
    Apr 1, 2017 at 21:34
  • 1
    Oops, you're right. Apr 1, 2017 at 21:35

It's wei(1 ether = 10^-18 wei). There are several other sub units like gwei, and finney. You can see all the sub units with their values from here,


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