Convert Ether to Wei without web3

Question

I don't want to load the web3 library, I do however want to convert Either to Wei, does anyone have a JavaScript function to share.

I don't mind loading a smaller library

Web3 is the most popular for this sort of thing, but you can try ethereum-units instead — Elena Dimitrova, Oct 24 '17 at 07:46
One ether is 1e18 wei. HOWEVER you will need the JavaScript big number library to be able to use numbers this large without rounding errors. — Alex, Oct 24 '17 at 16:40

score 4 · Answer 1 · edited Feb 25 '22 at 13:00

4

Just multiply the number of ether by 1e18 (or 10**18). Done and done!

edited Feb 25 '22 at 13:00

BonisTech

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answered Oct 24 '17 at 15:57

jojeyh

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Is there is difference in performance of manually multiplying and using the web3 method ? – Kannan Ravindran Oct 24 '17 at 16:28
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FTR you actually need to multiply with 1e18 (and not 10e18) – rndstr Sep 05 '21 at 01:46

score 3 · Answer 2 · answered Oct 24 '17 at 04:22

3

Accourding to this table:

Wei = 10^0 Wei
Ada = 10^3 Wei
Babbage = 10^6 Wei
Shannon = 10^9 Wei
Szabo = 10^12 Wei
Finney = 10^15 Wei
Ether = 10^18 Wei

1 Ether is 1^18 = 1000000000000000000 Wei.

1 Wei is 0.000000000000000001 Ether.

answered Oct 24 '17 at 04:22

Roman Kiselenko

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score 2 · Answer 3 · edited May 30 '20 at 14:42

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In javascript it would be wei = eth_amount*10e17. Not *10e18 . e counts as the 10 and *10e18 would multiply your eth by one order of magnitude too many!

edited May 30 '20 at 14:42

Shane Fontaine

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answered May 30 '20 at 02:44

jwjop1

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Convert Ether to Wei without web3

3 Answers3

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