A optimism bridge moves your tokens to OP Mainnet from another network, or back. Here you choose the token you have, the token you want on OP Mainnet and sign once: a cross-chain route handles the bridge and any swap. On October 23, 2026, 0.2 ETH (about $479) from Ethereum arrived as about $478 of ETH in seconds.
What Is OP Mainnet?
OP Mainnet (Optimism) is an Ethereum Layer 2 optimistic rollup; gas is paid in ETH.
| OP Mainnet | |
|---|---|
| Gas token | ETH |
| Address format | 0x… (same as Ethereum) |
| Explorer | optimistic.etherscan.io |
Live Routes to and from OP Mainnet
| Route | Value in | You receive (value) | Route fees | Source gas | Time |
|---|---|---|---|---|---|
| 0.2 ETH on Ethereum → ETH on OP Mainnet | $478.71 | $477.67 | $1.24 | $0.14 | seconds |
| 500 USDC on Arbitrum → USDC on OP Mainnet | $500.55 | $499.82 | $1.25 | $0.03 | seconds |
| $300 of ETH on OP Mainnet → ETH on Ethereum | $300.00 | $299.45 | $0.86 | $0.00 | seconds |
Quotes are live LI.FI routes requested on October 23, 2026 (recommended route), before the 0.7% Step Exchange service fee. Routes, prices and times change with liquidity; the widget shows the current quote before you sign.
How to Bridge to OP Mainnet
- Connect your wallet on the network where your tokens are.
- From: the token you have, for example ETH on Ethereum or USDC on Arbitrum.
- To: the token you want on OP Mainnet; add a little ETH for gas.
- Enter your OP Mainnet address (0x…).
- Review the quote and confirm.
How to Bridge Back from OP Mainnet
Reverse the route: choose the token on OP Mainnet as the source and the token and network you want as the destination. Keep enough ETH on OP Mainnet to pay for the transaction.
OP Mainnet Tips
The official Optimism bridge takes about 7 days to withdraw to Ethereum; cross-chain routes like the ones below return funds in seconds to minutes.
Popular OP Mainnet Routes
Arbitrum to Optimism, Base to Optimism, Ethereum to Optimism, Optimism to Arbitrum, Optimism to Base, Optimism to Ethereum, Optimism to Polygon.
Mistakes to Avoid
- No ETH for gas on arrival.
- Wrong address format: OP Mainnet uses 0x (EVM) addresses.
- Fake bridge sites: use the widget or bookmarked apps, never links from direct messages; see crypto bridge safety.
How bridges work: cross-chain bridge. All networks: bridge hub.