What Is Gas Price?
Gas price represents the cost per unit of computation on a blockchain network, measured in the network's native denomination (gwei for Ethereum, where 1 gwei = 0.000000001 ETH). Gas prices fluctuate based on demand for block space — when many users want to transact simultaneously, gas prices spike as users bid for priority inclusion.
How Gas Price Works
On Ethereum, total transaction cost = gas used × gas price. Simple transfers use ~21,000 gas, while complex DeFi interactions can use 200,000-500,000+ gas. During peak demand (popular NFT mints, market crashes), gas prices can exceed 500 gwei, making a single swap cost $100+. Layer 2 solutions and EIP-1559's base fee + priority fee mechanism aim to smooth gas price volatility.
Why It Matters for Traders
Gas prices are a real-time indicator of network demand and market activity. Spikes in gas price during a market downturn signal panic selling and DeFi liquidations. Sustained high gas prices during a rally indicate strong on-chain economic activity. Tracking gas prices helps time DeFi transactions — executing during low-demand periods (weekends, early UTC mornings) can save 50-80% on fees.
