Arbitrum (ARB) → Optimism (OP Optimism)
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 ARB → OP Optimism
1 ARB = 1.5506 OP Optimism
1 OP Optimism = 0.644912 ARB
Rate as of Sep 30, 2026 20:00
- Orders from
- 489.402 ARB ≈ $98.87
- Payout network
- Optimism
- 24 hours
- −0.56%
Current maths: 1.5506 OP Optimism for every ARB, and 0.644912 ARB per OP Optimism in reverse. Over 24 hours ARB/OP Optimism came in at minus 0.56%. Over the week, minus 9.86%.
The weekly range ran from 1.4884 to 1.8105 OP Optimism, a spread of 21.64%. One order takes from 489.402 to 49,500,000 ARB. In dollars that is roughly $98.87.
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. Market capitalisation puts Arbitrum at No. 68 ($1.37 B) and Optimism at No. 151 ($300.07 M). Over 90 days the daily moves of ARB and OP correlate at 0.4 (they travel alike).
Rate and amounts for ARB → OP Optimism
| ARB | OP Optimism | ≈ USD |
|---|---|---|
| 500 | 775.299 | $101.01 |
| 2,000 | 3,101.2 | $404.06 |
| 5,000 | 7,752.99 | $1,010.14 |
| 20,000 | 31,011.96 | $4,040.56 |
| 50,000 | 77,529.9 | $10,101.40 |
| 200,000 | 310,119.6 | $40,405.60 |
| OP Optimism | ARB | ≈ USD |
|---|---|---|
| 1,000 | 644.9125 | $130.29 |
| 5,000 | 3,224.56 | $651.45 |
| 10,000 | 6,449.12 | $1,302.90 |
| 50,000 | 32,245.62 | $6,514.52 |
| 100,000 | 64,491.25 | $13,029.04 |
| 500,000 | 322,456.24 | $65,145.19 |
How the ARB → OP Optimism exchange runs
- Work out the amount in the calculator — orders start at 489.402 ARB.
- Give a OP address on Optimism and a contact for the order.
- Send ARB on Arbitrum, exactly the amount the order shows.
- Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends Optimism to your address. The order page shows the status.
Check this before sending ARB
- The address network is Optimism. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 489.402 ARB.
- 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 ARB to OP Optimism rate has moved
high 1.8105 OP Optimismlow 1.4884 OP Optimism
Sep 23, 2026 20:03Sep 30, 2026 20:03
high 1.834 OP Optimismlow 0.974194 OP Optimism
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 1.834 OP Optimismlow 0.74138 OP Optimism
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 1.834 OP Optimismlow 0.406777 OP Optimism
Oct 1, 2025 05:00Sep 30, 2026 05:00
- 24 hours
- −0.56%
- Week
- −9.86%
- Weekly high
- 1.8105 OP Optimism
- Weekly low
- 1.4884 OP Optimism
- Spread
- 21.64%
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 ARB/OP Optimism spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 1.5874 | 1.5207 | 1.5635 | −0.56% |
| Week | 1.8105 | 1.4884 | 1.5907 | −9.86% |
| Month | 1.834 | 0.974194 | 1.5277 | +57.92% |
| Quarter | 1.834 | 0.74138 | 1.1073 | +91.39% |
Figures are in OP Optimism per unit of the currency you send, taken from market data.
Daily ARB → OP Optimism rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 30, 2026 | 1.5385 OP Optimism | +2.29% |
| Sep 29, 2026 | 1.504 OP Optimism | −0.8% |
| Sep 28, 2026 | 1.5161 OP Optimism | −1.82% |
| Sep 27, 2026 | 1.5442 OP Optimism | −0.24% |
| Sep 26, 2026 | 1.5479 OP Optimism | −6.02% |
| Sep 25, 2026 | 1.6471 OP Optimism | −6.23% |
| Sep 24, 2026 | 1.7566 OP Optimism | +0.98% |
Market data: ARB and OP
Arbitrum ARB- Price
- $0.202028
- 24 hours
- −4.14%
- Week
- −11.06%
- Market cap
- $1.37 B
- 24-hour turnover
- $250.74 M
- Rank by cap
- #68
- In circulation
- 6.79 B ARB
- All-time high
- $2.39
Optimism OP- Price
- $0.130478
- 24 hours
- −3.6%
- Week
- −1.66%
- Market cap
- $300.07 M
- 24-hour turnover
- $107.53 M
- Rank by cap
- #151
- In circulation
- 2.3 B OP
- All-time high
- $4.84
Source: CoinGecko, Sep 30, 2026 19:57.
Arbitrum and Optimism: how they differ
| Arbitrum (ARB) | Optimism (OP) | |
|---|---|---|
| Ticker | ARB | OP |
| Type | token | — |
| Launched | 2023 | — |
| Built by | Offchain Labs | — |
| Supply cap | 10 B ARB | — |
| In circulation | 6.79 B ARB | 2.3 B OP |
| Market cap | $1.37 B | $300.07 M |
| Rank by cap | #68 | #151 |
| Network | — | Optimism |
| Fees are paid in | — | ETH |
Daily moves of ARB and OP over the quarter link at 0.4 (they travel alike).
Why people take the ARB → OP Optimism route
- Fuel for OptimismWithout Optimism you cannot pay for a transfer or a contract call in Optimism — the coin is needed for anything that happens in that ecosystem.
- Different basketsDaily moves of ARB and OP over 90 days link at 0.4 (they travel alike) — the weaker the link, the less a portfolio rests on one coin.
- It works both waysThe OP Optimism → ARB direction is open as well — going back into ARB takes the same route and the same automation.
Common questions: ARB → OP Optimism
What rate does ARB to OP Optimism run at?
As of Sep 30, 2026 20:00 it is 1 ARB = 1.5506 OP Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.202319.
What amounts does ARB → OP Optimism accept?
From 489.402 to 49,500,000 ARB per order. The floor is roughly $98.87.
Why can I not swap less than 489.402 ARB?
The network fee and the handling do not depend on the amount. On a transfer below 489.402 ARB 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 ARB, and the blockchain takes that one.
How long does swapping ARB for OP Optimism take?
The clock starts with confirmations: as soon as Arbitrum 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.
Which network will OP Optimism arrive in?
The payout goes out on Optimism. Check that the receiving wallet supports that network.
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 ARB to OP Optimism rate do over the month?
Over the month, plus 57.92%: a low of 0.974194, a high of 1.834, an average of 1.5277 OP Optimism per 1 ARB.
Can I swap back, OP Optimism for ARB?
Yes, the reverse is open too: 1 OP Optimism = 0.6449 ARB. The link to switch sits under the calculator.
Other directions
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