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If you use Ethereum — or plan to do so — understanding gas fees is essential. They are the fees you pay to send ETH, move tokens, make swaps, or interact with smart contracts. Here I explain the most important things simply 👇
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🔥 What is “gas”?
Gas is the unit that measures how much work the network needs to process your transaction.
The more complex what you do is, the more gas it uses:
Send ETH → little gas
Send tokens → a little more
Make a swap on a DEX → much more
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💰 How is the final cost calculated?
Total cost = Gas used × Gas price (in Gwei)
✨ Gwei is a fraction of ETH:
1 ETH = 1,000,000,000 Gwei
Your wallet calculates this automatically, but understanding it helps you know why the fee goes up or down.
