Learn about gas

Plain explanations of the fee every blockchain charges, and what to do when your wallet runs out of it.

• What are crypto gas fees?A plain-language explanation of crypto gas fees: what they pay for, why they change, and which coin each network charges.
• Wallet gas: the small balance every wallet needsWallet gas is the small native-coin balance your wallet needs before it can send anything. Here is how much to keep and why.
• How to get gas into a wallet with no gasYour options when a wallet has tokens but no gas, and how a direct gas top-up to your wallet address works step by step.
• Why blockchain transactions need gasWhy every blockchain transaction carries a fee, what gas protects against, and why the fee is charged in the network's own coin.
• Running out of gas: what happens and how to fix itInsufficient funds for gas, failed transactions and stuck tokens: what running out of gas means and how to get moving again.