Ethereum (ETH Optimism) → Arbitrum (ARB)
The order runs on autopilot: the rate is locked when you create it, and the payout leaves as soon as the network confirms your transfer. No manual approval, no working hours.
Rate and amounts for ETH Optimism → ARB
1 ETH Optimism = 13,080.44 ARB
1 ARB = 0.00007645 ETH Optimism
Rate as of Sep 30, 2026 14:35
- Orders from
- 0.0374734 ETH Optimism ≈ $100.50
- Payout network
- Arbitrum
- 24 hours
- −0.33%
Right now 1 ETH Optimism gets you 13,080.44 ARB; the other way round, 1 ARB is 0.00007645 ETH Optimism. Over 24 hours ETH Optimism/ARB came in at minus 0.33%. Over the week, plus 15.34%.
The weekly range ran from 11,414.93 to 13,658.22 ARB, a spread of 19.65%. One order takes from 0.0374734 to 3,730 ETH Optimism. In dollars that is roughly $100.50.
Market capitalisation puts Ethereum at No. 2 ($327.32 B) and Arbitrum at No. 67 ($1.38 B). Over 90 days the daily moves of ETH and ARB correlate at 0.65 (they travel alike).
Rate and amounts for ETH Optimism → ARB
| ETH Optimism | ARB | ≈ USD |
|---|---|---|
| 0.05 | 654.0221 | $134.09 |
| 0.2 | 2,616.09 | $536.37 |
| 0.5 | 6,540.22 | $1,340.93 |
| 2 | 26,160.88 | $5,363.70 |
| 5 | 65,402.21 | $13,409.25 |
| 20 | 261,608.85 | $53,637.00 |
| ARB | ETH Optimism | ≈ USD |
|---|---|---|
| 500 | 0.038225 | $102.51 |
| 2,000 | 0.1529 | $410.05 |
| 5,000 | 0.38225 | $1,025.14 |
| 20,000 | 1.529 | $4,100.55 |
| 50,000 | 3.8225 | $10,251.37 |
| 200,000 | 15.29 | $41,005.49 |
How the ETH Optimism → ARB exchange runs
- Work out the amount in the calculator — orders start at 0.0374734 ETH Optimism.
- Give a ARB address on Arbitrum and a contact for the order.
- Send ETH Optimism on Optimism, exactly the amount the order shows.
- Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends Arbitrum to your address. The order page shows the status.
Check this before sending ETH Optimism
- The address network is Arbitrum. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 0.0374734 ETH Optimism.
- Copy the address in full, then check its first and last characters once it is pasted.
- Send exactly the amount stated in the order: the automation matches your payment against it, and any difference sends the order back for recalculation.
How the ETH Optimism to ARB rate has moved
high 13,658.22 ARBlow 11,414.93 ARB
Sep 23, 2026 14:38Sep 30, 2026 14:38
high 28,694.3 ARBlow 11,715.77 ARB
Aug 30, 2026 05:00Sep 29, 2026 05:00
high 28,694.3 ARBlow 11,715.77 ARB
Jul 1, 2026 05:00Sep 29, 2026 05:00
high 28,694.3 ARBlow 9,835.25 ARB
Sep 30, 2025 05:00Sep 29, 2026 05:00
- 24 hours
- −0.33%
- Week
- +15.34%
- Weekly high
- 13,658.22 ARB
- Weekly low
- 11,414.93 ARB
- Spread
- 19.65%
Market data from CoinGecko as of Sep 30, 2026 14:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted
The ETH Optimism/ARB spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 13,243.46 | 12,857.4 | 13,072.25 | −0.33% |
| Week | 13,658.22 | 11,414.93 | 12,403.84 | +15.34% |
| Month | 28,694.3 | 11,715.77 | 16,116.87 | −53.91% |
| Quarter | 28,694.3 | 11,715.77 | 20,815.43 | −37.97% |
Figures are in ARB per unit of the currency you send, taken from market data.
Daily ETH Optimism → ARB rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 29, 2026 | 12,919.27 ARB | +8.72% |
| Sep 28, 2026 | 11,883.17 ARB | −2.09% |
| Sep 27, 2026 | 12,136.38 ARB | +2.23% |
| Sep 26, 2026 | 11,871.23 ARB | −4.39% |
| Sep 25, 2026 | 12,416.68 ARB | −0.13% |
| Sep 24, 2026 | 12,432.34 ARB | +6.12% |
| Sep 23, 2026 | 11,715.77 ARB | −4.71% |
Market data: ETH and ARB
Ethereum ETH- Price
- $2,681.85
- 24 hours
- −0.79%
- Week
- −2.63%
- Market cap
- $327.32 B
- 24-hour turnover
- $13.23 B
- Rank by cap
- #2
- In circulation
- 122.09 M ETH
- All-time high
- $4,946.05
Arbitrum ARB- Price
- $0.204077
- 24 hours
- −0.46%
- Week
- −15.36%
- Market cap
- $1.38 B
- 24-hour turnover
- $258.67 M
- Rank by cap
- #67
- In circulation
- 6.79 B ARB
- All-time high
- $2.39
Source: CoinGecko, Sep 30, 2026 14:27.
Ethereum and Arbitrum: how they differ
| 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 | 122.09 M ETH | 6.79 B ARB |
| Market cap | $327.32 B | $1.38 B |
| Rank by cap | #2 | #67 |
Daily moves of ETH and ARB over the quarter link at 0.65 (they travel alike).
Why people take the ETH Optimism → ARB route
- A DeFi protocol tokenArbitrum belongs to decentralised finance: holders govern the protocol with it and pay for operations inside it.
- Different basketsDaily moves of ETH and ARB over 90 days link at 0.65 (they travel alike) — the weaker the link, the less a portfolio rests on one coin.
- It works both waysThe ARB → ETH Optimism direction is open as well — going back into ETH takes the same route and the same automation.
Common questions: ETH Optimism → ARB
What rate does ETH Optimism to ARB run at?
As of Sep 30, 2026 14:35 it is 1 ETH Optimism = 13,080.44 ARB. The figure updates on its own, and the calculator always shows the current one. On the market that is around $2,669.42.
What amounts does ETH Optimism → ARB accept?
From 0.0374734 to 3,730 ETH Optimism per order. The floor is roughly $100.50.
Why can I not swap less than 0.0374734 ETH Optimism?
The network fee and the handling do not depend on the amount. On a transfer below 0.0374734 ETH Optimism they eat a noticeable share of it, and the swap stops making sense for either side.
Is anything charged on top of the rate?
No. The payout is already worked out at the rate in the calculator. Separately you pay only the network fee for sending ETH Optimism, and the blockchain takes that one.
How long does swapping ETH Optimism for ARB take?
The clock starts with confirmations: as soon as Optimism confirms your transfer, the order goes out for payout with no operator involved. After that the timing is set by how busy the network is — which is the difference between quick and instant. A block in Optimism closes in about 12 sec.
Which network will ARB arrive in?
Arbitrum arrives in its own Arbitrum network — a plain ARB address is all you need.
What happens if the rate moves while I am paying?
Nothing: the rate is locked in the order and holds for as long as the order is alive. It is recalculated only 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 over the month?
Over the month, minus 53.91%: a low of 11,715.77, a high of 28,694.3, an average of 16,116.87 ARB per 1 ETH Optimism.
Can I swap back, ARB for ETH Optimism?
Yes, the reverse is open too: 1 ARB = 0.0000764485 ETH Optimism. The link to switch sits under the calculator.
Related reading
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The other way round
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