How to bridge from Arbitrum to Base
A real case from September 2026: a user bridged 0.1922 ETH (~$515) from Arbitrum to Base via Symbiosis, receiving 0.1917 ETH on Base. Source transaction 0xd21a…391f, destination on Base 0x4bb0…8e2c.
Open the widget — Arbitrum pre-selected as source, Base as destination, USDC in and out. Swap to a different token (ETH, USDT, WETH) if needed.
Connect wallet — MetaMask or Rabby. Recipient address on Base auto-filled from the same wallet.
Review the quote — Symbiosis routing layer shows the exact amount on Base, flat fee in USD, and ETA.
Approve and confirm — one transaction on Arbitrum. No second transaction on Base needed.
Receive on Base — typical end-to-end delivery via Symbiosis routing layer.
Track on the Symbiosis explorer, and .

About the Arbitrum One to Base route
Why this route. ETH usually moves from Arbitrum to Base to earn on Base lending: Moonwell's markets are concentrated there, and Morpho vaults such as Moonwell Flagship ETH take ETH deposits. The official bridges would route it through Ethereum with a withdrawal wait of at least seven days.
What you receive. ETH on Base, which is also Base's gas token, lands at the address you already use on Arbitrum. Sign one transaction on Arbitrum One and nothing else is needed on the Base side.
Watch out for. Because the same ETH pays Arbitrum gas, do not send your entire balance; leave a little for the fee. Also check that the wallet is on Arbitrum One rather than Arbitrum Nova, which holds separate ETH.
Speed. Median delivery 28 seconds; 90th percentile 35 seconds, over the 90 days to 25 September 2026.
Related routes: Arbitrum Bridge, BNB Chain to Base Bridge, Polygon to Base Bridge, Base Bridge.














