In my smart contract I have a map which map a person and his/her contribution. Say for example a contributes 20 ether, b contributes 10 ether. Everything works fine, but when I checking it shows:

    "0": "address: contributor 0x4b0897b0513fdc7c541b6d9d7e929c4e5364d2db",
    "1": "uint256: amount 20000000000000000000"

But actually he contributed 20 ether only. How can I maintain the exact amount? So, finally I can return their exact amount. Thank you.

1 Answer 1


That value is 20 ether. Indeed, 20000000000000000000 wei = 20 ether. So it's correct


  • So if I send that much wei will it reduce only 20 ether..
    – e.k
    Commented Mar 14, 2018 at 13:42
  • yes, the amounts are stored in wei.
    – qbsp
    Commented Mar 14, 2018 at 13:42

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