Ether and Wei

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

contract EtherUnits {
    uint public oneWei = 1 wei;
    // 1wei = 1
    bool public isOneWei = 1 wei == 1;

    uint public oneEther = 1 gwei;
    // 1Ether = 10^9 wei
    bool public isOneEther = 1 ether == 1e18;

    uint public oneGwei = 1 ether;
    // 1Gwei = 10^9 wei
    bool public isOneGwei = 1 ether == 1e9;
}

• 1 分間が 60 秒であるように、1Ether = 1*10^18 wei
• 1 gwei = 1*10^9
• 1wei = 1 なので、数字の単位は wei

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