Bridge from Base to Optimism
Pay ETH on Base and receive Ether (ETH) on Optimism.
Keep ETH on Base for gas. Enter an amount to compare quotes, then connect your wallet to review and sign.
Best route first
Ranked by what lands in your wallet.
Review details
Recipient, fees, route and minimum received.
Non-custodial
You sign from your own wallet.
Swap
Selected tokens and networks
ETH on Base to ETH on Optimism
This selection moves funds from Base (chain ID 8453) to Optimism (chain ID 10). The destination token arrives on Optimism. Changing a token or network in the swap box changes the route.
You pay
Ether (ETH)
Base · 18 decimals
Native ETH; no token contract.
You receive
Ether (ETH)
Optimism · 18 decimals
Native ETH; no token contract.
- Gas and approvals
- Keep ETH on Base for network fees. ETH is the native asset here, so spending it does not need an ERC-20 approval. Leave some behind for gas. To spend the received ETH later on Optimism, you will need ETH there for gas.
- Compare an executable quote
- Disconnected previews request current provider quotes but cannot be signed. Reference-price tables are separate from those quotes. Connect your wallet to get transaction details for your address. Review the provider, fees, recipient and minimum received for your amount before signing.
How to review a swap · Swap and bridge risks · How routes and fees are compared
What to review before bridging to Optimism
Compare the expected ETH output and minimum received on Optimism. Keep ETH for separately paid source gas and check any bridge or provider fees. A route with more output does not necessarily have the lowest total cost after gas.
SwapRoute requests quotes from capable 0x and Relay integrations in parallel. Returned routes are ranked by net token output; provider confidence only breaks effectively equal outputs. Speed is not part of the ranking. Availability can change with the amount and market conditions.
FAQ
Base to Optimism bridge — FAQ
How do I bridge from Base to Optimism?
Choose Base as the source chain and Optimism as the destination chain, enter an amount, then review the best available route before signing in your wallet.
How long does a Base to Optimism bridge take?
Timing depends on provider liquidity and conditions on Base and Optimism. A provider's estimate is not a measured completion time or a guarantee. Track the destination transaction; source-chain confirmation alone does not confirm arrival.
Can I send bridged funds to a different wallet?
You can request a different recipient on the destination network when the provider supports it. ETH/WETH wrapping can require the connected wallet as recipient. Verify the destination network and address before signing.
Does SwapRoute custody funds while bridging?
No. SwapRoute is non-custodial. You connect your wallet, review the transaction, and sign directly. Execution is handled by the underlying route provider and protocols.