Community Submission - Author: John Ma
Specifically, a unit of gwei is defined as one-billionth (one Nano) of an ether. So 1 gwei equals 0.000000001 or 10e-9 ETH. Conversely, 1 ETH equals one billion (10e9) gwei.
Unit | Wei Value | Wei | Ether Value |
1 wei | 1 | 10e-18 ETH | |
Kwei | 10e³ wei | 1,000 | 10e-15 ETH |
Mwei | 10e6 wei | 1,000,000 | 10e-12 ETH |
Gwei | 10e9 wei | 1,000,000,000 | 10e-9 ETH |
Microether | 10e12 wei | 1,000,000,000,000 | 10e-6 ETH |
Milliether | 10e15 wei | 1,000,000,000,000,000 | 10e-3 ETH |
Ether | 10e18 wei | 1,000,000,000,000,000,000 | 1 ETH |
To better understand the concept of gwei, we may use an analogy with the US dollar, where gwei would be equivalent to coins (cents) and ETH to dollar bills. For small purchases, it’s easier to refer to prices in cents rather than in fractions of a dollar. As such, gwei may come handy when measuring small values, and that’s the reason it is widely used when calculating the gas price.
Although less common, gwei may sometimes be referred to as a Shannon, NanoEther or Nano. The term Shannon refers to the mathematician and cryptographer, Claude Shannon, who is known as the father of Information Theory.
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