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Fees, Gas & Finality
Arbitrum Gas Fees Explained
Learn how gas works on Arbitrum, why ETH is needed, and what users should check before swaps or bridge actions.
Network map
What this means
Arbitrum commonly uses ETH for gas, and users need ETH on Arbitrum specifically to pay for transactions.
Core ideas
What to understand first
- ETH is commonly used for Arbitrum gas.
- Arbitrum fees are usually lower than Ethereum mainnet fees.
- Assets on Arbitrum are separate from Ethereum mainnet.
- Bridge actions may involve additional waiting or fees.
User checklist
What to check before moving assets
- Keep ETH on Arbitrum.
- Use a trusted Arbitrum explorer.
- Confirm your wallet is on Arbitrum.
- Review gas before signing.
Risk note
Common mistakes to avoid
- Users often have ETH on mainnet but not on Arbitrum.
- Fake bridge pages may request malicious signatures.
- Bridge delays can be mistaken for lost funds.