Bridge from Base to Arbitrum
Move USDC, ETH, USDT from Base to Arbitrum at the best available rate.
Typical time — usually under a minute or two, though it can stretch during busier periods.
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 Base to Arbitrum
Both Base and Arbitrum are layer 2 networks, so this hop stays cheap on both ends. Gas on Base typically runs a few cents, Arbitrum's fees usually land in the same range, and both chains pay for gas in ETH. Because there is no Ethereum mainnet leg in the middle, most transfers settle in well under a couple of minutes and you keep that low-cost profile the whole way across.
People usually make this move to reach Arbitrum's DeFi depth. Base tends to be where funds arrive first, with direct Coinbase on-ramping, a busy consumer-app scene, and Aerodrome as its main liquidity hub, but traders often want the deeper markets Arbitrum One is known for. As of publication, Arbitrum carries some of the largest liquidity of any L2 and is home to Uniswap, GMX, and a broad perpetuals ecosystem. Moving over lets you put Base-sourced capital to work in those venues without giving up layer-2 fees. That mix of cheap entry on Base and deep markets on Arbitrum is usually the whole reason for the trip.
Base
Source- 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.
Arbitrum
Destination- Gas
- Usually a few cents per swap.
- Speed
- Sub-second confirmations; optimistic-rollup settlement to Ethereum.
- Ecosystem
- The deepest DeFi liquidity of any L2 — perpetuals, GMX, and major DEXs.
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 Base → Arbitrum
Do I need to route through Ethereum mainnet to get from Base to Arbitrum?
No. Base and Arbitrum are both layer 2s, and a liquidity bridge moves your funds straight between them without touching Ethereum mainnet. Going by way of L1 would usually mean paying mainnet gas on the way out and again on the way in, which can cost far more than the transfer itself. Staying L2-to-L2 is what keeps this hop down to roughly a few cents of gas on each side.
What does bridging from Base to Arbitrum usually cost?
You typically pay a small amount of ETH for gas on the Base side to start the transfer, plus a bridge fee that depends on the route and the size of the move. Because both networks price gas in the low single-digit cents most of the time, the network portion is usually minor. The larger variable is the bridge or liquidity provider's fee, so it is worth reading the quoted total before you confirm.
Will I have ETH for gas once I land on Arbitrum?
If you bridge ETH, you arrive with something to spend on Arbitrum gas as soon as it lands. If you are only moving a stablecoin like USDC, plan to carry a little ETH across as well, since Arbitrum charges its fees in ETH. Some bridges can deliver a small amount of destination gas for you, but it is safer not to assume it.
Which version of USDC arrives on Arbitrum?
This matters more than people expect. Both Base and Arbitrum support native USDC issued by Circle, but some routes hand you a bridged variant instead. Where you can, pick a route that delivers native USDC on Arbitrum so you are not left holding a wrapped token that is harder to use across the deeper markets there.
How long should this transfer take?
Most liquidity-bridge transfers on this route finish in under a minute or two. Base produces blocks roughly every two seconds and Arbitrum confirms in under a second, so neither chain is usually the bottleneck. Congestion or a manual confirmation step can add time, so give it a few minutes before worrying.
Is a liquidity bridge or the canonical bridge the safer choice here?
For an L2-to-L2 hop like this, a liquidity bridge is the common pick because it avoids the long withdrawal delay that Arbitrum's canonical path can involve. Whichever you use, start with a small test amount, confirm the contract you are approving, and check that the destination address is your Arbitrum wallet. As of publication, staying on well-known bridge front-ends is the simplest way to lower your risk.