Swap Ethereum (ETH Optimism) for Arbitrum (ARB)
The calculator does the maths at the live rate, the page lists the limits and the timing. Your rate is locked the moment the order is created.
Rate as of Sep 17, 2026 16:18
- Payout network
- Arbitrum
- 24 hours
- +5.49%
One ETH Optimism buys 15,176.54 ARB right now; the other way round, 1 ARB is 0.0000658912 ETH Optimism. Market over 24 hours: ETH Optimism against ARB plus 5.49%. The week added minus 11.02%.
The weekly corridor ran from 14,374.81 to 18,810.16 ARB, a spread of 30.86%.
By market cap Ethereum sits 2th ($300.45 B) and Arbitrum 71th ($1.1 B). Daily moves of ETH and ARB over 90 days line up at 0.65 (they travel alike).
Who takes the ETH Optimism → ARB route
- A DeFi protocol tokenArbitrum lives inside decentralised finance: it governs the protocol and pays for what happens in it.
- Different basketsDaily moves of ETH and ARB over 90 days line up at 0.65 (they travel alike) — the looser the link, the less a portfolio depends on one coin.
- A road both waysThe ARB → ETH Optimism direction is open too, so going back into ETH takes the same route.
ETH Optimism → ARB rate and amounts
1 ETH Optimism = 15,176.54 ARB
1 ARB = 0.0000658912 ETH Optimism
Send ETH Optimism — receive ARB
| ETH Optimism | ARB | ≈ USD |
|---|---|---|
| 0.005 | 75.8827 | $12.30 |
| 0.02 | 303.5309 | $49.21 |
| 0.1 | 1,517.65 | $246.07 |
| 1 | 15,176.54 | $2,460.73 |
| 5 | 75,882.72 | $12,303.65 |
| 20 | 303,530.89 | $49,214.60 |
Need ARB — send this much ETH Optimism
| ARB | ETH Optimism | ≈ USD |
|---|---|---|
| 100 | 0.00658912 | $16.21 |
| 500 | 0.0329456 | $81.07 |
| 2,000 | 0.131782 | $324.28 |
| 20,000 | 1.3178 | $3,242.81 |
| 100,000 | 6.5891 | $16,214.03 |
| 500,000 | 32.9456 | $81,070.17 |
How the ETH Optimism → ARB order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a ARB address in Arbitrum and a way to reach you.
- Send ETH Optimism in Optimism for exactly the amount stated in the order.
- Once the network confirms your transfer, Arbitrum leaves for your address. The order page tracks every step.
Check this before sending ETH Optimism
- The address network is Arbitrum. Sending through another network usually means losing the transfer.
- Copy the address whole, then compare the first and last characters after pasting.
- Coins go through an AML check: a flagged transfer can be held until the check is finished.
Where the ETH Optimism to ARB rate has been
high 18,810.16 ARBlow 14,374.81 ARB
Sep 10, 2026 16:19Sep 17, 2026 16:19
high 28,694.3 ARBlow 13,278.18 ARB
Aug 17, 2026 03:00Sep 16, 2026 03:00
high 28,694.3 ARBlow 13,278.18 ARB
Jun 18, 2026 03:00Sep 16, 2026 03:00
high 28,694.3 ARBlow 8,743.19 ARB
Sep 18, 2025 03:00Sep 16, 2026 03:00
- 24 hours
- +5.49%
- Week
- −11.02%
- Weekly high
- 18,810.16 ARB
- Weekly low
- 14,374.81 ARB
- Spread
- 30.86%
Market data from CoinGecko as of Sep 17, 2026 15:54; the exchange rate is calculated separately and differs. Where these numbers come from
How far ETH Optimism/ARB travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 15,304.08 | 14,374.81 | 14,793.75 | +5.49% |
| Week | 18,810.16 | 14,374.81 | 17,146.64 | −11.02% |
| Month | 28,694.3 | 13,278.18 | 21,705.78 | −38.24% |
| Quarter | 28,694.3 | 13,278.18 | 22,022.6 | −22.93% |
Figures are in ARB per unit sent, from market data.
Daily ETH Optimism → ARB rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 16, 2026 | 15,752.33 ARB | −16.26% |
| Sep 15, 2026 | 18,810.16 ARB | +1.22% |
| Sep 14, 2026 | 18,582.9 ARB | +3.32% |
| Sep 13, 2026 | 17,985.38 ARB | −0.2% |
| Sep 12, 2026 | 18,022.2 ARB | +3.44% |
| Sep 11, 2026 | 17,423.14 ARB | +5.52% |
| Sep 10, 2026 | 16,510.97 ARB | +9.59% |
The numbers on ETH and ARB
Ethereum ETH- Price
- $2,460.73
- 24 hours
- +2.26%
- Week
- −1.1%
- Market cap
- $300.45 B
- 24-hour turnover
- $15.79 B
- Rank by cap
- #2
- In circulation
- 122.06 M ETH
- Record price
- $4,946.05
Arbitrum ARB- Price
- $0.164098
- 24 hours
- −3.06%
- Week
- +12.2%
- Market cap
- $1.1 B
- 24-hour turnover
- $447.92 M
- Rank by cap
- #71
- In circulation
- 6.68 B ARB
- Record price
- $2.39
Source: CoinGecko, Sep 17, 2026 15:54.
Ethereum against Arbitrum
| Ethereum (ETH) | Arbitrum (ARB) | |
|---|---|---|
| Ticker | ETH | ARB |
| Type | coin of its own network | token |
| Network | Optimism | — |
| Fees are paid in | ETH | — |
| Launched | 2015 | 2023 |
| Built by | Vitalik Buterin | Offchain Labs |
| Consensus | Proof of Stake | — |
| Block | ~12 sec | — |
| Supply cap | no cap | 10 B ARB |
| Privacy | transfers are public | — |
| In circulation | 122.06 M ETH | 6.68 B ARB |
| Market cap | $300.45 B | $1.1 B |
| Rank by cap | #2 | #71 |
Daily moves of ETH and ARB over 90 days line up at 0.65 — they travel alike.
Common questions: ETH Optimism → ARB
What rate does ETH Optimism to ARB run at?
As of Sep 17, 2026 16:18 it is 1 ETH Optimism = 15,176.54 ARB. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $2,490.44.
What else is taken on top of the rate?
The payout is already calculated at the rate in the calculator. On top of it you only pay the network fee for sending ETH Optimism, and that one goes to the blockchain, not to us.
How long does ETH Optimism to ARB take?
The clock starts with confirmations: the order goes into work once Optimism confirms your transfer. After that it comes down to how busy the network is. A block in Optimism closes in about 12 sec.
Which network will ARB arrive in?
Arbitrum leaves in its own Arbitrum network — a plain ARB address is all you need.
What if the rate moves while I am paying?
The rate is pinned to the order and does not move while the order is alive. It can be recalculated if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.
What did the ETH Optimism to ARB rate do this month?
The month came in at minus 38.24%. Low 13,278.18, high 28,694.3, middle 21,705.78 ARB per ETH Optimism.
Can I go back, ARB to ETH Optimism?
Yes, the reverse direction is open: 1 ARB = 0.0000662228 ETH Optimism. The link sits right under the calculator.
Worth reading
Where else this can go
The other way round
Send ETH Optimism, receive something else
ETH Optimism → ATOM1,609.84
ETH Optimism → AUDIO196,388.11
ETH Optimism → AVAX324.3116
ETH Optimism → AVNT25,226.93
ETH Optimism → AXS2,636.58
ETH Optimism → BANANA649.11
ETH Optimism → BAND13,647.13
ETH Optimism → BCH10.9326
