How to use ether units in Solidity
A guide to using units of ether in Solidity
Table of Contents for How to use ether units in Solidity
As well as being able to use dates/times like 2 hours (see my post here about using dates/times in Solidity), you can also use the various ether keywords for values of eth.
wei
Wei is the smallest value of ether.
gwei
Gwei is 1 billion wei
ether
1 eth = 1,000,000,000,000,000,000 wei (10^18).
Using these eth values
You can use these and they return the number value they represent. e.g.
uint costToDoSomething = 5 wei; // = 5
uint somethingElse = 10 gwei; // 10 billion
uint amountOfEth = 0.5 ether; // (10^18)/5
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