USD Coin (USDC 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 USDC Optimism → ARB
1 USDC Optimism = 4.9019 ARB
1 ARB = 0.204002 USDC Optimism
Rate as of Sep 30, 2026 17:05
- Orders from
- 100.67 USDC Optimism ≈ $100.65
- Payout network
- Arbitrum
- 24 hours
- +5.01%
Current maths: 4.9019 ARB for every USDC Optimism, and 0.204002 USDC Optimism per ARB in reverse. Over 24 hours USDC Optimism/ARB came in at plus 5.01%. Over the week, plus 17.94%.
The weekly range ran from 4.169 to 5.141 ARB, a spread of 23.31%. One order takes from 100.67 to 10,000,000 USDC Optimism. In dollars that is roughly $100.65.
Market capitalisation puts USD Coin at No. 6 ($74.33 B) and Arbitrum at No. 67 ($1.38 B). Over 90 days the daily moves of USDC and ARB correlate at 0 (they travel apart).
Rate and amounts for USDC Optimism → ARB
| USDC Optimism | ARB |
|---|---|
| 200 | 980.3824 |
| 1,000 | 4,901.91 |
| 2,000 | 9,803.82 |
| 10,000 | 49,019.12 |
| 20,000 | 98,038.24 |
| 100,000 | 490,191.18 |
| ARB | USDC Optimism |
|---|---|
| 500 | 102.001 |
| 2,000 | 408.0041 |
| 5,000 | 1,020.01 |
| 20,000 | 4,080.04 |
| 50,000 | 10,200.1 |
| 200,000 | 40,800.41 |
How the USDC Optimism → ARB exchange runs
- Work out the amount in the calculator — orders start at 100.67 USDC Optimism.
- Give a ARB address on Arbitrum and a contact for the order.
- Send USDC 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 USDC Optimism
- The address network is Arbitrum. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 100.67 USDC 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 USDC Optimism to ARB rate has moved
high 5.141 ARBlow 4.169 ARB
Sep 23, 2026 17:05Sep 30, 2026 17:05
high 11.8743 ARBlow 4.2557 ARB
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 13.746 ARBlow 4.2557 ARB
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 13.746 ARBlow 2.1791 ARB
Oct 1, 2025 05:00Sep 30, 2026 05:00
- 24 hours
- +5.01%
- Week
- +17.94%
- Weekly high
- 5.141 ARB
- Weekly low
- 4.169 ARB
- Spread
- 23.31%
Market data from CoinGecko as of Sep 30, 2026 16:57. The exchange rate is worked out separately and differs from the market one. How these numbers are counted
The USDC Optimism/ARB spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 4.971 | 4.6988 | 4.8625 | +5.01% |
| Week | 5.141 | 4.169 | 4.6275 | +17.94% |
| Month | 11.8743 | 4.2557 | 6.1966 | −58.53% |
| Quarter | 13.746 | 4.2557 | 10.0055 | −62.52% |
Figures are in ARB per unit of the currency you send, taken from market data.
Daily USDC Optimism → ARB rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 30, 2026 | 4.9247 ARB | −0.52% |
| Sep 29, 2026 | 4.9503 ARB | +11.98% |
| Sep 28, 2026 | 4.4208 ARB | −1.8% |
| Sep 27, 2026 | 4.5018 ARB | +2.05% |
| Sep 26, 2026 | 4.4113 ARB | −4.52% |
| Sep 25, 2026 | 4.62 ARB | −0.23% |
| Sep 24, 2026 | 4.6308 ARB | +8.81% |
Market data: USDC and ARB
USD Coin USDC- Price
- $0.9998
- 24 hours
- −0.02%
- Week
- 0%
- Market cap
- $74.33 B
- 24-hour turnover
- $16.43 B
- Rank by cap
- #6
- In circulation
- 74.35 B USDC
- All-time high
- $1.04
Arbitrum ARB- Price
- $0.203611
- 24 hours
- −4.79%
- Week
- −14.55%
- Market cap
- $1.38 B
- 24-hour turnover
- $241.54 M
- Rank by cap
- #67
- In circulation
- 6.79 B ARB
- All-time high
- $2.39
Source: CoinGecko, Sep 30, 2026 16:57.
USD Coin and Arbitrum: how they differ
| USD Coin (USDC) | Arbitrum (ARB) | |
|---|---|---|
| Ticker | USDC | ARB |
| Type | token | token |
| Network | Optimism | — |
| Fees are paid in | ETH | — |
| Launched | 2018 | 2023 |
| Built by | Circle | Offchain Labs |
| Supply cap | no cap | 10 B ARB |
| In circulation | 74.35 B USDC | 6.79 B ARB |
| Market cap | $74.33 B | $1.38 B |
| Rank by cap | #6 | #67 |
Daily moves of USDC and ARB over the quarter link at 0 (they travel apart).
Why people take the USDC Optimism → ARB route
- Entering ARB from dollarsUSDC goes into Arbitrum in one step, with no coin in between: over the last month ARB posted +141.11%.
- A DeFi protocol tokenArbitrum belongs to decentralised finance: holders govern the protocol with it and pay for operations inside it.
- Different basketsDaily moves of USDC and ARB over 90 days link at 0 (they travel apart) — the weaker the link, the less a portfolio rests on one coin.
Common questions: USDC Optimism → ARB
What rate does USDC Optimism to ARB run at?
As of Sep 30, 2026 17:05 it is 1 USDC Optimism = 4.9019 ARB. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.998083.
What amounts does USDC Optimism → ARB accept?
From 100.67 to 10,000,000 USDC Optimism per order. The floor is roughly $100.65.
Why can I not swap less than 100.67 USDC Optimism?
The network fee and the handling do not depend on the amount. On a transfer below 100.67 USDC 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 USDC Optimism, and the blockchain takes that one.
How long does swapping USDC 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.
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 USDC Optimism to ARB rate do over the month?
Over the month, minus 58.53%: a low of 4.2557, a high of 11.8743, an average of 6.1966 ARB per 1 USDC Optimism.
Can I swap back, ARB for USDC Optimism?
Yes, the reverse is open too: 1 ARB = 0.203998 USDC Optimism. The link to switch sits under the calculator.
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