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How Does the Base Fee Adjustment Mechanism in EIP-1559 Work?

The base fee adjusts automatically based on the network's utilization of block space. If the block is more than 50% full, the base fee increases for the next block to cool demand.

If it is less than 50% full, the base fee decreases to encourage usage. This adjustment happens in small, predictable increments to maintain fee stability.

What Is “EIP-1559” and How Did It Change Ethereum’s Gas Mechanism?
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What Is the Concept of ‘EIP-1559’ regarding Ethereum Gas Fees?
How Does EIP-1559 Affect the Predictability of Gas Fees for Smart Contract Execution?