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  1. ETH: changing network from Arbitrum One to OP Mainnet (Optimism)

ETH: changing network from Arbitrum One to OP Mainnet (Optimism)

It is still ETH, only in a different blockchain: you send ETH Arbitrum, and the payout of ETH Optimism goes to your address in OP Mainnet (Optimism). Bridge contracts, signatures and wrapped tokens play no part.

Rate and amounts for ETH Arbitrum → ETH Optimism 1 ETH Arbitrum = 0.99999 ETH Optimism 1 ETH Optimism = 1 ETH Arbitrum

Rate as of Sep 30, 2026 20:05

Orders from
0.0374734 ETH Arbitrum ≈ $100.42
Payout network
Optimism
24 hours
0%
You get 0.99999 ETH Optimism
Create the order
Rate
1 ETH Arbitrum = 0.99999 ETH Optimism
From
0.0374734 ETH Arbitrum
Up to
3,730 ETH Arbitrum

Preliminary figure: the final amount is locked in the order.

Right now 1 ETH Arbitrum gets you 0.99999 ETH Optimism; the other way round, 1 ETH Optimism is 1 ETH Arbitrum. Over 24 hours ETH Arbitrum/ETH Optimism came in at about 0%. Over the week, about 0%.

The weekly range ran from 1 to 1 ETH Optimism, a spread of 0%. One order takes from 0.0374734 to 3,730 ETH Arbitrum. In dollars that is roughly $100.42.

The robot sends the payout in the Optimism network, so the address has to belong to that network — a transfer to another one will not arrive.

Which network ETH arrives in

The same ETH goes out in several networks. Each has its own rate and its own floor, and the fee is charged by the network itself.

NetworkPer 1 ETH ArbitrumFromNetwork feeSpeed
Ethereum0.999990.0374734 ETH Arbitrum≈ $0.055—
BNB Smart Chain (BEP20)0.999990.0374734 ETH Arbitrum≈ $0.0025fast
BASE0.999990.0374734 ETH Arbitrum——
Optimism open0.999990.0374734 ETH Arbitrum≈ $0.0001fast

Rate and amounts for ETH Arbitrum → ETH Optimism

ETH ArbitrumETH Optimism≈ USD
0.050.0499995$133.98
0.20.199998$535.93
0.50.499995$1,339.83
22$5,359.30
55$13,398.25
2019.9998$53,593.00
ETH OptimismETH Arbitrum≈ USD
0.050.0500005$133.98
0.20.200002$535.94
0.50.500005$1,339.84
22$5,359.35
55.0001$13,398.38
2020.0002$53,593.54

How the ETH Arbitrum → ETH Optimism exchange runs

  1. Work out the amount in the calculator — orders start at 0.0374734 ETH Arbitrum.
  2. Give a ETH address on Optimism and a contact for the order.
  3. Send ETH Arbitrum on Arbitrum One, exactly the amount the order shows.
  4. Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends Ethereum Optimism to your address. The order page shows the status.

Swap ETH Arbitrum for ETH Optimism

Check this before sending ETH Arbitrum

  • The address network is Optimism. Sending through another network almost always means losing the transfer.
  • The transfer must not be smaller than 0.0374734 ETH Arbitrum.
  • Copy the address in full, then check its first and last characters once it is pasted.
  • Ethereum, Arbitrum, Optimism, BNB Smart Chain and Polygon addresses look the same (0x…) — make sure the wallet is switched to OP Mainnet (Optimism).
  • 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 Arbitrum to ETH Optimism rate has moved

high 1 ETH Optimismlow 1 ETH Optimism
Sep 23, 2026 20:05Sep 30, 2026 20:05
high 1 ETH Optimismlow 1 ETH Optimism
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 1 ETH Optimismlow 1 ETH Optimism
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 1 ETH Optimismlow 1 ETH Optimism
Oct 1, 2025 05:00Sep 30, 2026 05:00
24 hours
0%
Week
0%
Weekly high
1 ETH Optimism
Weekly low
1 ETH Optimism
Spread
0%

Market data from CoinGecko as of Sep 30, 2026 19:57. The exchange rate is worked out separately and differs from the market one. How these numbers are counted

The ETH Arbitrum/ETH Optimism spread by period

PeriodHighLowMiddlePeriod result
24 hours1110%
Week1110%
Month1110%
Quarter1110%

Figures are in ETH Optimism per unit of the currency you send, taken from market data.

Daily ETH Arbitrum → ETH Optimism rate

DayCloseAgainst the day before
Sep 30, 20261 ETH Optimism0%
Sep 29, 20261 ETH Optimism0%
Sep 28, 20261 ETH Optimism0%
Sep 27, 20261 ETH Optimism0%
Sep 26, 20261 ETH Optimism0%
Sep 25, 20261 ETH Optimism0%
Sep 24, 20261 ETH Optimism0%

Market data: ETH

Ethereum ETH
Price
$2,679.65
24 hours
−1.29%
Week
−0.57%
Market cap
$327.21 B
24-hour turnover
$14.98 B
Rank by cap
#2
In circulation
122.09 M ETH
All-time high
$4,946.05

Source: CoinGecko, Sep 30, 2026 19:57.

Compared: Arbitrum One and OP Mainnet (Optimism)

Arbitrum OneOP Mainnet (Optimism)
What kind of networkOptimistic rollup (L2)Optimistic rollup (L2)
What pays the feeETHETH
How expensive≈ $0.0014≈ $0.0001
How fastfastfast
Block time~0.25 sec~2 sec
Address format0x…0x…
Memo or tag needednot requirednot required
Ethereum-format address (0x…)yesyes
Withdrawal to Ethereum through the official bridge≈ 7 days — the challenge window runs≈ 7 days — the challenge window runs

The cost and speed marks are given against each other: both drift with the load on the network.

How an exchange differs from an ordinary bridge

VelorexOrdinary bridge
What arrives at the addressthe OP Mainnet (Optimism) network's own coin, ETHIt varies: a number of networks hand out the bridged version of the token
Wallet connection and signaturesWe do without them: the payout goes to the address from the orderMandatory: the wallet is connected, contract transactions are signed
Is a OP Mainnet (Optimism) coin needed for feesNot required to receiveAs a rule yes, otherwise the funds cannot be claimed or moved on
When it arrivesAs soon as Arbitrum One gathers confirmations; the status is shown on the order pageSet by the bridge itself and by the load on both networks
Who holds the funds on the wayVelorex — until the order is closed by the payoutThe smart contract of the bridge or its validators

Arbitrum One → OP Mainnet (Optimism): the full list of directions The OP Mainnet (Optimism) blockchain

Why people take the ETH Arbitrum → ETH Optimism route

  • Changing networkETH from Arbitrum One (fee ≈ $0.0014) moves over to Optimism (fee ≈ $0.0001). That is how people top up a wallet or an exchange that takes one network only.
  • It works both waysThe ETH Optimism → ETH Arbitrum direction is open as well — going back into ETH takes the same route and the same automation.

Common questions: ETH Arbitrum → ETH Optimism

What rate does ETH Arbitrum to ETH Optimism run at?
As of Sep 30, 2026 20:05 it is 1 ETH Arbitrum = 0.99999 ETH Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $2,679.62.
What amounts does ETH Arbitrum → ETH Optimism accept?
From 0.0374734 to 3,730 ETH Arbitrum per order. The floor is roughly $100.42.
Why can I not swap less than 0.0374734 ETH Arbitrum?
The network fee and the handling do not depend on the amount. On a transfer below 0.0374734 ETH Arbitrum 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 Arbitrum, and the blockchain takes that one.
How long does swapping ETH Arbitrum for ETH Optimism take?
The clock starts with confirmations: as soon as Arbitrum One 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 Arbitrum One closes in about 0.25 sec.
Will real ETH be credited, or a wrapper?
Real. ETH Optimism is the OP Mainnet (Optimism) network's own coin, and transfers inside it are paid for with the same coin.
Is ETH needed to receive ETH Optimism?
No: fees in OP Mainnet (Optimism) are charged in the same ETH Optimism, so there is no second coin to hold.
Which network will ETH Optimism arrive in?
The payout goes out on Optimism. Check that the receiving wallet supports that network.
Which network is cheaper for receiving ETH?
Usually ETH BEP20, ETH Optimism works out cheaper. Still, the network is picked by what the recipient accepts, not by the fee.
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 Arbitrum to ETH Optimism rate do over the month?
Over the month, about 0%: a low of 1, a high of 1, an average of 1 ETH Optimism per 1 ETH Arbitrum.
Can I swap back, ETH Optimism for ETH Arbitrum?
Yes, the reverse is open too: 1 ETH Optimism = 0.99999 ETH Arbitrum. The link to switch sits under the calculator.

Related reading

Other directions

The other way round

Send ETH Arbitrum, receive something else

Receive ETH Optimism, send something else

ETH Arbitrum ETH Optimism All directions All currencies

Arbitrum One → OP Mainnet (Optimism): the full list of directions All networks and routes

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