Arbitrum (ARB) → USD Coin (USDC 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 → USDC Optimism 1 ARB = 0.203098 USDC Optimism 1 USDC Optimism = 4.9237 ARB

Rate as of Sep 30, 2026 16:20

Orders from: 489.402 ARB ≈ $99.92
Payout network: Optimism
24 hours: −2.11%

You send

ARB

You get 1,015.49

USDC Optimism

Create the order

Rate: 1 ARB = 0.203098 USDC Optimism
From: 489.402 ARB
Up to: 49,000,000 ARB

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

Right now 1 ARB gets you 0.203098 USDC Optimism; the other way round, 1 USDC Optimism is 4.9237 ARB. Over 24 hours ARB/USDC Optimism came in at minus 2.11%. Over the week, minus 14.55%.

The weekly range ran from 0.195524 to 0.238613 USDC Optimism, a spread of 22.04%. One order takes from 489.402 to 49,000,000 ARB. In dollars that is roughly $99.92.

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. 67 ($1.39 B) and USD Coin at No. 6 ($74.34 B). Over 90 days the daily moves of ARB and USDC correlate at 0 (they travel apart).

Which network USDC arrives in

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

Network	Per 1 ARB	From	Network fee	Speed
Ethereum (ERC20)	0.203098	489.402 ARB	≈ $0.037	medium
Solana	0.203098	489.402 ARB	≈ $0.0006	fast
Arbitrum One	0.203098	489.402 ARB	≈ $0.0036	fast
BASE	0.203098	489.402 ARB	—	—
BNB Smart Chain (BEP20)	0.203098	489.402 ARB	≈ $0.0025	fast
Avalanche C-Chain	0.203098	489.402 ARB	≈ $0.0036	fast
NEAR	0.203098	489.402 ARB	—	—
Optimism open	0.203098	489.402 ARB	≈ $0.00019	fast
Polygon	0.203098	489.402 ARB	≈ $0.0021	fast
XLM	0.203098	489.402 ARB	—	—

ARB → USDC: all networks side by side Network charges for USDC

Rate and amounts for ARB → USDC Optimism

Send ARB — receive USDC OptimismNeed USDC Optimism — send this much ARB

ARB	USDC Optimism
500	101.549
2,000	406.1959
5,000	1,015.49
20,000	4,061.96
50,000	10,154.9
200,000	40,619.59

USDC Optimism	ARB
100	492.3732
500	2,461.87
2,000	9,847.46
5,000	24,618.66
20,000	98,474.64
100,000	492,373.22

How the ARB → USDC Optimism exchange runs

Work out the amount in the calculator — orders start at 489.402 ARB.
Give a USDC 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 USD Coin to your address. The order page shows the status.

Swap ARB for USDC Optimism

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 USDC Optimism rate has moved

WeekMonthQuarterYear

high 0.238613 USDC Optimismlow 0.195524 USDC Optimism

Sep 23, 2026 16:22Sep 30, 2026 16:22

high 0.234981 USDC Optimismlow 0.0842158 USDC Optimism

Aug 31, 2026 05:00Sep 30, 2026 05:00

high 0.234981 USDC Optimismlow 0.0727486 USDC Optimism

Jul 2, 2026 05:00Sep 30, 2026 05:00

high 0.458899 USDC Optimismlow 0.0727486 USDC Optimism

Oct 1, 2025 05:00Sep 30, 2026 05:00

24 hours: −2.11%
Week: −14.55%
Weekly high: 0.238613 USDC Optimism
Weekly low: 0.195524 USDC Optimism
Spread: 22.04%

Market data from CoinGecko as of Sep 30, 2026 15:57. The exchange rate is worked out separately and differs from the market one. How these numbers are counted

The ARB/USDC Optimism spread by period

Period	High	Low	Middle	Period result
24 hours	0.213786	0.201954	0.205812	−2.11%
Week	0.238613	0.195524	0.216775	−14.55%
Month	0.234981	0.0842158	0.172706	+141.12%
Quarter	0.234981	0.0727486	0.114301	+166.84%

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

Daily ARB → USDC Optimism rate

Day	Close	Against the day before
Sep 30, 2026	0.20306 USDC Optimism	+0.52%
Sep 29, 2026	0.202006 USDC Optimism	−10.7%
Sep 28, 2026	0.226203 USDC Optimism	+1.83%
Sep 27, 2026	0.222136 USDC Optimism	−2.01%
Sep 26, 2026	0.226692 USDC Optimism	+4.73%
Sep 25, 2026	0.216452 USDC Optimism	+0.23%
Sep 24, 2026	0.215947 USDC Optimism	−8.1%

Market data: ARB and USDC

Arbitrum ARB

Price: $0.204159
24 hours: −2.11%
Week: −15.07%
Market cap: $1.39 B
24-hour turnover: $254.95 M
Rank by cap: #67
In circulation: 6.79 B ARB
All-time high: $2.39

USD Coin USDC

Price: $0.999834
24 hours: 0%
Week: 0%
Market cap: $74.34 B
24-hour turnover: $16.61 B
Rank by cap: #6
In circulation: 74.35 B USDC
All-time high: $1.04

Source: CoinGecko, Sep 30, 2026 15:57.

Arbitrum and USD Coin: how they differ

	Arbitrum (ARB)	USD Coin (USDC)
Ticker	ARB	USDC
Type	token	token
Launched	2023	2018
Built by	Offchain Labs	Circle
Supply cap	10 B ARB	no cap
In circulation	6.79 B ARB	74.35 B USDC
Market cap	$1.39 B	$74.34 B
Rank by cap	#67	#6
Network	—	Optimism
Fees are paid in	—	ETH

Daily moves of ARB and USDC over the quarter link at 0 (they travel apart).

Why people take the ARB → USDC Optimism route

Stepping out of the swingsARB moved +141.11% over the past month. USDC tracks the dollar, so after the swap the amount stops following ARB.
It works both waysThe USDC Optimism → ARB direction is open as well — going back into ARB takes the same route and the same automation.

Common questions: ARB → USDC Optimism

What rate does ARB to USDC Optimism run at?

As of Sep 30, 2026 16:20 it is 1 ARB = 0.203098 USDC Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.203064.

What amounts does ARB → USDC Optimism accept?

From 489.402 to 49,000,000 ARB per order. The floor is roughly $99.92.

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 USDC 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 USDC Optimism arrive in?

The payout goes out on Optimism. Check that the receiving wallet supports that network.

Which network is cheaper for receiving USDC?

Usually USDC SOL, USDC Arbitrum, USDC BEP20, USDC AVAX C, USDC Optimism, USDC Polygon 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 ARB to USDC Optimism rate do over the month?

Over the month, plus 141.12%: a low of 0.0842158, a high of 0.234981, an average of 0.172706 USDC Optimism per 1 ARB.

Can I swap back, USDC Optimism for ARB?

Yes, the reverse is open too: 1 USDC Optimism = 4.9236 ARB. The link to switch sits under the calculator.