Bridge from Optimism to Base
Move USDC, ETH, USDT from Optimism to Base at the best available rate.
Typical time — Usually well under a few minutes, though it can vary with available liquidity and how busy each chain is..
Quotes include a 0.5% service fee that supports Bridgeline. Swaps execute through LI.FI’s audited smart contracts — this site never holds your funds.
Four steps, all signed in your own wallet.
- 01
Connect your wallet
Connect inside the bridge box. That's the only place Bridgeline ever asks — this site never sees your keys.
- 02
Pick your token and amount
Choose what you're moving, from which chain to which chain, and how much.
- 03
Review the quote and fee
You approve the exact amount in your own wallet, with the full fee shown. Cancel any time before you sign.
- 04
Confirm and track
Sign the transaction and watch it settle on-chain through LI.FI's audited contracts. Bridgeline is never in the middle.
Bridging Optimism to Base
Optimism and Base run on the same OP Stack and sit inside the same Superchain, so moving between them is closer to stepping between two rooms of one house than crossing between unrelated networks. Even so, the canonical path treats them as separate destinations hanging off Ethereum, so a native withdrawal drops down to L1 and waits out a challenge window before your funds can climb back up to Base. Most people skip that detour and use a liquidity bridge, which reads the two chains as the siblings they architecturally are and swaps your balance across in a single step.
People usually push funds from Optimism to Base to get closer to Base's consumer-app and memecoin activity, which as of publication tends to cluster around Aerodrome as the chain's main liquidity hub. Base also offers direct Coinbase on-ramping, so it's a natural place to gather funds you plan to cash out or top up through an exchange. Optimism, by contrast, leans on its own DeFi mainstays like Velodrome and its retroactive public-goods ecosystem, so this direction often means chasing a specific pool, token, or app that lives on Base rather than back home. Since both chains use ETH for gas and keep fees to typically a few cents, the transfer itself rarely costs much beyond the bridge's own spread and fee.
Optimism
Source- Gas
- Typically a few cents per swap.
- Speed
- About 2-second blocks; an OP-Stack rollup settling to Ethereum.
- Ecosystem
- Anchor of the Superchain; home to Velodrome and retroactive public-goods funding.
Base
Destination- Gas
- Typically a few cents per swap.
- Speed
- About 2-second blocks; an OP-Stack rollup that settles to Ethereum.
- Ecosystem
- Coinbase's layer 2 — consumer apps, easy fiat on-ramps, and an active memecoin scene.
Stay safe while bridging
- Approve only what you’re bridging. The widget requests finite token approvals by default — there’s no need to grant an unlimited allowance.
- Check the URL every time. Bookmark this site and confirm the address bar before connecting a wallet.
- Start small for a new route. A tiny test transfer confirms everything works before you move the full amount.
Moving a large amount? Consider a hardware wallet
A hardware wallet keeps your private keys offline, so a compromised browser or a malicious approval can’t drain your funds on its own. It’s the single biggest security upgrade for anyone holding meaningful value on-chain.
Official links, provided for your security.
Questions about Optimism → Base
Optimism and Base are both Superchain members — does that make moving between them cheaper or faster?
Sharing the OP Stack and the Superchain doesn't automatically make a transfer instant or free today. Native interop between Superchain members is expected to improve over time, but as of publication most users still rely on third-party liquidity bridges, which price the route on available liquidity rather than on the chains' shared design. Where the common stack does help is transaction cost: gas on each side is typically only a few cents, so the main expense is usually the bridge's spread, not the hop itself.
How long does an Optimism to Base transfer usually take?
Through a liquidity bridge the move is usually done in well under a few minutes, because it doesn't wait out Optimism's native withdrawal challenge window. Both chains produce blocks roughly every couple of seconds, so most of the wait is the bridge confirming your deposit on Optimism before releasing funds on Base. Expect times to stretch during congestion or for larger amounts that need more liquidity to fill.
Will I have gas to move around once I land on Base?
Base uses ETH for gas, the same asset Optimism uses, so you'll want a small amount of ETH to arrive alongside whatever token you're bridging. If you send only a stablecoin like USDC and no ETH, you can land with a balance you can't yet move; many bridges let you request a little ETH on the Base side for exactly this reason. A few dollars of ETH there is usually enough to sign your first transactions.
Will my USDC arrive as native USDC on Base?
USDC exists as a native, Circle-issued token on both Optimism and Base, so a well-configured route should leave you holding native USDC on Base rather than a bridged wrapper. It's worth confirming the destination token address before you commit, since some routes have historically delivered bridged variants that don't always trade one-to-one with the native version. For other assets, check whether the token you're moving has an official representation on Base or only a wrapped one.
What should I check before sending a large amount in this direction?
Start with a small test transfer, confirm it lands as the token you expect on Base, then send the rest. Double-check you're on the genuine bridge front-end and that the destination network is set to Base and not another OP-Stack chain, since several Superchain networks share tooling and can look nearly identical in a dropdown. For larger sums, splitting into a couple of tranches can limit how much you expose to any single transaction or to thin liquidity at that moment.