What Are Ethereum Gas Fees and Why Do They Change? Ethereum gas fees are transaction costs paid in ETH to process activity on the network. Learn why gas fees change and how they are calculated. Sue Wei February 27, 2026
What Is Ethereum (ETH)? Ethereum is a decentralized blockchain platform that allows developers to build applications using smart contracts. Its native cryptocurrency, Ether (ETH), is used to power transactions and services on the network. Sue Wei February 26, 2026