Swap Optimism (OP Optimism) for Ethereum (ETH Arbitrum)
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 16:43
- Orders from
- 2,157.5 OP Optimism ≈ $210.85
- Payout network
- Arbitrum One
- 24 hours
- +1.35%
You get
ETH Arbitrum
Start the order
ETH Arbitrum
The figure is indicative; the exact amount is locked in the order.
One OP Optimism buys 0.0000399998 ETH Arbitrum right now; the other way round, 1 ETH Arbitrum is 25,000.13 OP Optimism. Market over 24 hours: OP Optimism against ETH Arbitrum plus 1.35%. The week added minus 0.25%.
The weekly corridor ran from 0.0000375956 to 0.0000417004 ETH Arbitrum, a spread of 10.92%. A single order takes 2,157.5 to 102,000,000 OP Optimism. In dollars that is roughly $210.85.
The payout leaves in the Arbitrum One network, so the receiving address has to belong to that network. By market cap Optimism sits 165th ($224.78 M) and Ethereum 2th ($300.45 B). Daily moves of OP and ETH over 90 days line up at 0.43 (they travel alike).
Who takes the OP Optimism → ETH Arbitrum route
- Fuel for Arbitrum OneWithout Ethereum nothing moves in Arbitrum One — every transfer and every contract call is paid in it.
- Different basketsDaily moves of OP and ETH over 90 days line up at 0.43 (they travel alike) — the looser the link, the less a portfolio depends on one coin.
- A road both waysThe ETH Arbitrum → OP Optimism direction is open too, so going back into OP takes the same route.
OP Optimism → ETH Arbitrum rate and amounts
1 OP Optimism = 0.0000399998 ETH Arbitrum
1 ETH Arbitrum = 25,000.13 OP Optimism
Send OP Optimism — receive ETH Arbitrum
| OP Optimism | ETH Arbitrum | ≈ USD |
|---|---|---|
| 5,000 | 0.199999 | $488.64 |
| 10,000 | 0.399998 | $977.28 |
| 50,000 | 2 | $4,886.40 |
| 100,000 | 4 | $9,772.80 |
| 500,000 | 19.9999 | $48,864.00 |
| 1,000,000 | 39.9998 | $97,728.00 |
Need ETH Arbitrum — send this much OP Optimism
| ETH Arbitrum | OP Optimism | ≈ USD |
|---|---|---|
| 0.1 | 2,500.01 | $244.32 |
| 0.2 | 5,000.03 | $488.64 |
| 1 | 25,000.13 | $2,443.21 |
| 2 | 50,000.26 | $4,886.43 |
| 10 | 250,001.31 | $24,432.13 |
| 20 | 500,002.62 | $48,864.26 |
Payout network for ETH
The same ETH goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.
| Network | Per OP Optimism | From | Network fee | Speed |
|---|---|---|---|---|
| Ethereum | 0.0000399998 | 2,157.5 OP Optimism | ≈ $0.019 | — |
| BNB Smart Chain (BEP20) | 0.0000399998 | 2,157.5 OP Optimism | ≈ $0.0024 | fast |
| Arbitrum One open now | 0.0000399998 | 2,157.5 OP Optimism | ≈ $0.0011 | fast |
| Optimism | 0.0000399998 | 2,157.5 OP Optimism | ≈ < $0.0001 | fast |
| BASE | 0.0000399998 | — | — | — |
How the OP Optimism → ETH Arbitrum order runs
- Work out the amount in the calculator: orders start at 2,157.5 OP Optimism.
- Enter a ETH address in Arbitrum One and a way to reach you.
- Send OP Optimism in Optimism for exactly the amount stated in the order.
- Once the network confirms your transfer, Ethereum leaves for your address. The order page tracks every step.
Check this before sending OP Optimism
- The address network is Arbitrum One. Sending through another network usually means losing the transfer.
- The transfer must not be smaller than 2,157.5 OP Optimism.
- 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 OP Optimism to ETH Arbitrum rate has been
high 0.0000417004 ETH Arbitrumlow 0.0000375956 ETH Arbitrum
Sep 10, 2026 16:46Sep 17, 2026 16:46
high 0.0000455509 ETH Arbitrumlow 0.0000357733 ETH Arbitrum
Aug 17, 2026 03:00Sep 16, 2026 03:00
high 0.0000674203 ETH Arbitrumlow 0.0000357733 ETH Arbitrum
Jun 18, 2026 03:00Sep 16, 2026 03:00
high 0.000181176 ETH Arbitrumlow 0.0000357733 ETH Arbitrum
Sep 18, 2025 03:00Sep 16, 2026 03:00
- 24 hours
- +1.35%
- Week
- −0.25%
- Weekly high
- 0.0000417004 ETH Arbitrum
- Weekly low
- 0.0000375956 ETH Arbitrum
- Spread
- 10.92%
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 OP Optimism/ETH Arbitrum travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 0.0000400052 | 0.0000382731 | 0.0000392387 | +1.35% |
| Week | 0.0000417004 | 0.0000375956 | 0.0000389553 | −0.25% |
| Month | 0.0000455509 | 0.0000357733 | 0.0000407832 | −11.9% |
| Quarter | 0.0000674203 | 0.0000357733 | 0.0000492675 | −36.94% |
Figures are in ETH Arbitrum per unit sent, from market data.
Daily OP Optimism → ETH Arbitrum rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 16, 2026 | 0.0000392011 ETH Arbitrum | −3.59% |
| Sep 15, 2026 | 0.0000406613 ETH Arbitrum | +6.26% |
| Sep 14, 2026 | 0.0000382653 ETH Arbitrum | +0.91% |
| Sep 13, 2026 | 0.0000379211 ETH Arbitrum | −0.1% |
| Sep 12, 2026 | 0.0000379576 ETH Arbitrum | −1.33% |
| Sep 11, 2026 | 0.0000384681 ETH Arbitrum | −4.62% |
| Sep 10, 2026 | 0.0000403322 ETH Arbitrum | −4.83% |
The numbers on OP and ETH
Optimism OP- Price
- $0.097728
- 24 hours
- +3.64%
- Week
- −0.5%
- Market cap
- $224.78 M
- 24-hour turnover
- $64.69 M
- Rank by cap
- #165
- In circulation
- 2.3 B OP
- Record price
- $4.84
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
Source: CoinGecko, Sep 17, 2026 15:54.
Optimism against Ethereum
| Optimism (OP) | Ethereum (ETH) | |
|---|---|---|
| Ticker | OP | ETH |
| Network | Optimism | Arbitrum One |
| Fees are paid in | ETH | ETH |
| In circulation | 2.3 B OP | 122.06 M ETH |
| Market cap | $224.78 M | $300.45 B |
| Rank by cap | #165 | #2 |
| Type | — | coin of its own network |
| Launched | — | 2015 |
| Built by | — | Vitalik Buterin |
| Consensus | — | Proof of Stake |
| Block | — | ~12 sec |
| Supply cap | — | no cap |
| Privacy | — | transfers are public |
Daily moves of OP and ETH over 90 days line up at 0.43 — they travel alike.
Common questions: OP Optimism → ETH Arbitrum
What rate does OP Optimism to ETH Arbitrum run at?
As of Sep 17, 2026 16:43 it is 1 OP Optimism = 0.0000399998 ETH Arbitrum. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.0984287.
What amounts does OP Optimism → ETH Arbitrum accept?
From 2,157.5 to 102,000,000 OP Optimism per order. The lower limit is roughly $210.85.
Where does the 2,157.5 OP Optimism floor come from?
Network fees and order handling eat a small transfer alive — below 2,157.5 OP Optimism the swap stops making sense for either side.
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 OP Optimism, and that one goes to the blockchain, not to us.
How long does OP Optimism to ETH Arbitrum 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.
Which network will ETH Arbitrum arrive in?
The payout leaves in Arbitrum One. Make sure the receiving wallet works with that network.
Where is receiving ETH cheaper?
The cheapest is usually ETH BEP20, ETH Arbitrum, ETH Optimism. Still, the network is chosen by what the recipient supports, not by the fee.
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 OP Optimism to ETH Arbitrum rate do this month?
The month came in at minus 11.9%. Low 0.0000357733, high 0.0000455509, middle 0.0000407832 ETH Arbitrum per OP Optimism.
Can I go back, ETH Arbitrum to OP Optimism?
Yes, the reverse direction is open: 1 ETH Arbitrum = 25,125.95 OP Optimism. The link sits right under the calculator.
Worth reading
- Best Ethereum Bridges in 2026: How to Choose a Safe Bridge for Moving Crypto Between Networks
- Кросс-чейн мосты в криптовалюте: что это такое, как работают и как безопасно переводить активы между сетями
- Что такое Ethereum простыми словами: как работает сеть, зачем нужен ETH и почему вокруг неё строится Web3
Where else this can go
The other way round
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