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Table of Contents
Gas concept
Gas-related important concepts
Calculation and function of Gas fee
Home web3.0 Understand one article! What exactly is the Ethereum Gas fee

Understand one article! What exactly is the Ethereum Gas fee

Apr 21, 2025 am 07:06 AM
Blockchain Ethereum exchange Ethereum gas fee Ethereum blockchain gas fee Ethereum GAS fees miner

The Ethereum Gas fee is the fee paid to the miner when a user conducts transactions or executes a smart contract on the Ethereum blockchain, and is used to compensate the miner for the consumption of computing resources. Gas fees are calculated as the product of Gas Limit and Gas Price, Gas Price is the unit price of Gas, Gas Limit is the upper limit of the number of Gas for transactions or blocks, and Gas fees incentivize miners to maintain network security and prevent resource abuse.

Understand one article! What exactly is the Ethereum Gas fee

The Ethereum Gas fee is a fee that needs to be paid when trading or executing smart contracts on the Ethereum blockchain, and is used to compensate miners for computing resources consumed for validating and packaging exchanges1. Here is a detailed introduction to it:

Gas concept

Gas can be understood as the "fuel" in the Ethereum network. Ethereum is regarded as a decentralized computing network. When a user sends tokens, executes contracts, transfers Ether, or performs other operations, the computer needs to calculate and consumes network resources when processing this transaction. Just as gasoline is required for the car to drive, the user must pay a Gas fee to purchase "fuel" in order for the computer to work for it, and the Gas fee is finally paid to the miners as a handling fee.
  • Gas Price: That is, the unit price of Gas, in Gwei, 1 Gwei is equal to 0.0000000001 Ethereum. The higher the Gas Price set by the user, the more motivation the miner will have to package its transactions, and the faster the transaction will be confirmed; on the contrary, if the Gas Price is set too low, the transaction may have to wait for a long time to be processed. The default Gas Price of Ethereum is 1 wei.
  • Gas Limit: There are two levels of meaning. First, for a single transaction, it refers to the maximum number of Gas that the transaction initiator is willing to pay for the transaction, and the transaction initiator needs to set it when initiating the transaction; second, it is for the Gas Limit of the block, that is, the total amount of Gas that a single block can accommodate is limited. If the actual Gas consumed is less than the set Gas Limit, the miner will only charge the actual Gas consumed, and the remaining Gas will be returned to the user; if the actual Gas consumed exceeds Gas Limit, the transaction will not be executed and will be rolled back to the state before execution. At this time, the miner will charge the product of Gas Price and Gas Limit as a fee.

Calculation and function of Gas fee

  • Calculation method: Gas fee is obtained by multiplying Gas Limit and Gas Price. The number of Gas units required to complete a transaction depends on the complexity of the transaction. For example, a simple transfer transaction usually requires 21,000 Gas, while complex operations involving smart contracts require more Gas.
  • Function: On the one hand, Gas fees can incentivize miners to maintain the security of the Ethereum network, prompting them to actively verify and package transactions. On the other hand, it also helps prevent network resources from being abused, because users need to pay corresponding fees for their operations, thus avoiding the congestion of a large number of meaningless transactions on the network.

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