Natural Units

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Numbers in the Ethereum blockchain are represented by integers. Currently floating point numbers are not supported. The "natural unit" is the basic integer that represents a number.

ETH Natural Units

ETH, or ethers, are represented by a natural unit with 18 decimal places.

1 ETH = 1,000,000,000,000,000,000 or 10^18 natural units. The ETH natural unit is also called a wei.

Token Natural Units

ERC20 tokens on the Ethereum blockchain also have a natural unit where 1 unit of token is represented by {x} natural units. This is represented by the decimal variable commonly written into the token smart contract. See Ethereum Based Tokens for further information.

For example:

  • DGDb and UNI both have 0 decimal places, where 1 unit of token is represented by 1 natural unit.
  • REP, GNT and many others have 18 decimal places, where 1 unit of token is represented by 1,000,000,000,000,000,000 or 10^18 natural units.

Source

http://theethereum.wiki/

See Also on BitcoinWiki

This page was moved from enbitwiki:en:Natural Units. Its edit history can be viewed at Natural Units/edithistory