To swap ARB to ETH, connect your wallet on Arbitrum, choose ARB as “from” and ETH on Arbitrum as “to”, approve ARB once and confirm. It settles in one transaction. ARB has official contracts on two networks, so first check where yours is: the widget handles both.
Key Takeaways
- Route type: same-chain on Arbitrum; cross-chain to Ethereum or Base through a fast bridge.
- Price impact: almost none up to $10,000 on our check (0.4484 vs 0.4480 ETH per $1,000).
- Cost: $0.01-0.07 of gas plus about 0.25% route fees, before the 0.7% service fee.
- Main catch: ARB on Ethereum is a different contract from ARB on Arbitrum; pick the network your tokens are on.
What Is ARB?
ARB is the governance token of the Arbitrum DAO, which votes on upgrades and treasury spending for Arbitrum One and Arbitrum Nova. It does not pay gas; Arbitrum transactions are paid in ETH. ARB has two official contracts:
| Network | ARB contract |
|---|---|
| Arbitrum One | 0x912CE59144191C1204E64559FE8253a0e49E6548 |
| Ethereum | 0xB50721BCf8d664c30412Cfbc6cf7a15145234ad1 |
What Is ETH?
ETH is Ethereum’s native coin and the gas token on Arbitrum. Swapping ARB to ETH on Arbitrum gives you spendable gas on the same network. On October 30, 2026, 0.448 ETH was worth about $997, so one ETH was near $2,225.
How the ARB to ETH Swap Works
On Arbitrum a DEX aggregator sells ARB into ETH pools in one transaction; 3 to 6 sources answered depending on the amount (Nordstern Finance gave the best price each time). To Ethereum or Base the router swaps on Arbitrum and delivers ETH through a liquidity bridge (Layerswap on our check), which avoids the roughly 6.4-day challenge period of the native Arbitrum withdrawal.
Quotes by Amount (Arbitrum, October 30, 2026)
| You send | You receive | Value | Gas | ETH per $1,000 |
|---|---|---|---|---|
| $100 of ARB | 0.044842 ETH | $99.79 | $0.02 | 0.4484 |
| $1,000 of ARB | 0.448143 ETH | $997.25 | $0.01 | 0.4481 |
| $10,000 of ARB | 4.479516 ETH | $9,968.27 | $0.07 | 0.4480 |
ARB/ETH liquidity on Arbitrum is deep enough that $10,000 lost only about 0.1% versus $1,000; no need to split at this size. Quotes are LI.FI routes before the 0.7% Step Exchange service fee and change every minute.
ARB on Arbitrum vs ARB on Ethereum ($1,000)
| You hold | You receive | Value | Route fees | Gas | Time |
|---|---|---|---|---|---|
| ARB on Arbitrum | 0.448143 ETH on Arbitrum | $997.25 | $2.50 | $0.01 | ~1 s |
| ARB on Arbitrum | 0.447764 ETH on Ethereum | $997.20 | $2.78 | $0.02 | ~15 s |
| ARB on Arbitrum | 0.447788 ETH on Base | $996.10 | $2.73 | $0.02 | ~9 s |
| ARB on Ethereum | 0.445279 ETH on Ethereum | $991.66 | $2.50 | $0.16 | one block |
| ARB on Ethereum | 0.445204 ETH on Arbitrum | $990.71 | $2.67 | $0.21 | ~2 s |
ARB on Arbitrum got about $6 more per $1,000 than ARB on Ethereum, mostly from deeper pools and cheaper gas. If your ARB is on Ethereum and you trade often, move to Arbitrum once; see bridge Arbitrum to Ethereum for the other direction.
Step by Step
- Check where your ARB is: Arbitrum One or Ethereum (the token contract tells you).
- Keep a little ETH on that network for gas.
- From: ARB on that network. To: ETH on Arbitrum, Ethereum or Base.
- Approve ARB, then review the quote.
- Confirm in your wallet.
Mistakes to Avoid
- Picking the wrong ARB: if the widget shows a zero ARB balance, your tokens are on the other network. Switch the source chain.
- Waiting a week for nothing: the native Arbitrum to Ethereum withdrawal has a challenge period of about 6.4 days. A swap route to ETH on Ethereum took about 15 seconds.
- No ETH on Arbitrum: ARB alone cannot pay gas. See Arbitrum gas fees for typical costs.
Related: OP to ETH, USDC to ETH, Arbitrum network details.
