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  1. USDT Optimism (OP Mainnet (Optimism)) → USDC Arbitrum (Arbitrum One)

USDT Optimism (OP Mainnet (Optimism)) → USDC Arbitrum (Arbitrum One)

The stablecoin leaves for another network: you send USDT Optimism in OP Mainnet (Optimism) and take USDC Arbitrum in Arbitrum One. All of it is one order.

Rate and amounts for USDT Optimism → USDC Arbitrum 1 USDT Optimism = 0.998592 USDC Arbitrum 1 USDC Arbitrum = 1.0014 USDT Optimism

Rate as of Nov 1, 2026 08:24

Orders from
100.67 USDT Optimism ≈ $100.62
Payout network
Arbitrum One
24 hours
+0.01%
You get 1,997.18 USDC Arbitrum
Create the order
Rate
1 USDT Optimism = 0.998592 USDC Arbitrum
From
100.67 USDT Optimism
Up to
10,000,000 USDT Optimism

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

Current maths: 0.998592 USDC Arbitrum for every USDT Optimism, and 1.0014 USDT Optimism per USDC Arbitrum in reverse. Over 24 hours USDT Optimism/USDC Arbitrum came in at plus 0.01%. Over the week, plus 0.01%.

The weekly range ran from 0.998807 to 0.999745 USDC Arbitrum, a spread of 0.09%. One order takes from 100.67 to 10,000,000 USDT Optimism. In dollars that is roughly $100.62.

The robot sends the payout in the Arbitrum One network, so the address has to belong to that network — a transfer to another one will not arrive. Market capitalisation puts Tether at No. 3 ($180.04 B) and USD Coin at No. 6 ($71.72 B). Over 90 days the daily moves of USDT and USDC correlate at 0.13 (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.

NetworkPer 1 USDT OptimismFromNetwork feeSpeed
Ethereum (ERC20)0.998592100.67 USDT Optimism≈ $0.0061medium
TRON (TRC20)0.998592100.67 USDT Optimism≈ $2.1fast
Solana0.998592100.67 USDT Optimism≈ $0.00048fast
Arbitrum One open0.998592100.67 USDT Optimism≈ $0.0029fast
BASE0.998592100.67 USDT Optimism——
BNB Smart Chain (BEP20)0.998592100.67 USDT Optimism≈ $0.0023fast
Avalanche C-Chain0.998592100.67 USDT Optimism≈ $0.0014fast
NEAR0.998592100.67 USDT Optimism——
Optimism0.998592100.67 USDT Optimism≈ $0.00015fast
Polygon0.998592100.67 USDT Optimism≈ $0.0016fast
XLM0.998592100 USDT Optimism——

Network charges for USDC

Rate and amounts for USDT Optimism → USDC Arbitrum

USDT OptimismUSDC Arbitrum
200199.7184
1,000998.592
2,0001,997.18
10,0009,985.92
20,00019,971.84
100,00099,859.2
USDC ArbitrumUSDT Optimism
200200.282
1,0001,001.41
2,0002,002.82
10,00010,014.1
20,00020,028.2
100,000100,141

How the USDT Optimism → USDC Arbitrum exchange runs

  1. Work out the amount in the calculator — orders start at 100.67 USDT Optimism.
  2. Give a USDC address on Arbitrum One and a contact for the order.
  3. Send USDT Optimism on Optimism, exactly the amount the order shows.
  4. 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 USDT Optimism for USDC Arbitrum

Check this before sending USDT Optimism

  • The address network is Arbitrum One. Sending through another network almost always means losing the transfer.
  • The transfer must not be smaller than 100.67 USDT Optimism.
  • 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 Arbitrum One.
  • Keep a reserve of ETH at the same address — without it USDC cannot be sent on later.
  • 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 USDT Optimism to USDC Arbitrum rate has moved

high 0.999745 USDC Arbitrumlow 0.998807 USDC Arbitrum
Oct 25, 2026 08:26Nov 1, 2026 08:26
high 0.999991 USDC Arbitrumlow 0.999117 USDC Arbitrum
Oct 1, 2026 05:00Oct 31, 2026 05:00
high 1.0002 USDC Arbitrumlow 0.999117 USDC Arbitrum
Aug 2, 2026 05:00Oct 31, 2026 05:00
high 1.0031 USDC Arbitrumlow 0.996801 USDC Arbitrum
Nov 1, 2025 05:00Oct 31, 2026 05:00
24 hours
+0.01%
Week
+0.01%
Weekly high
0.999745 USDC Arbitrum
Weekly low
0.998807 USDC Arbitrum
Spread
0.09%

Market data from CoinGecko as of Nov 1, 2026 07:57. The exchange rate is worked out separately and differs from the market one. How these numbers are counted

The USDT Optimism/USDC Arbitrum spread by period

PeriodHighLowMiddlePeriod result
24 hours0.9995320.9993010.999409+0.01%
Week0.9997450.9988070.999427+0.01%
Month0.9999910.9991170.999556−0.03%
Quarter1.00020.9991170.999739−0.03%

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

Daily USDT Optimism → USDC Arbitrum rate

DayCloseAgainst the day before
Oct 31, 20260.999416 USDC Arbitrum+0.02%
Oct 30, 20260.999176 USDC Arbitrum−0.04%
Oct 29, 20260.999561 USDC Arbitrum+0.01%
Oct 28, 20260.999478 USDC Arbitrum+0.02%
Oct 27, 20260.999325 USDC Arbitrum0%
Oct 26, 20260.999282 USDC Arbitrum−0.03%
Oct 25, 20260.99955 USDC Arbitrum+0.01%

How the Velorex rate moved: USDT Optimism → USDC Arbitrum day by day

DayVelorex rateMarket rate
Nov 1, 20260.998592 USDC Arbitrum0.999532
Oct 31, 20260.998692 USDC Arbitrum0.999467
Oct 30, 20260.998293 USDC Arbitrum0.999293
Oct 29, 20260.998791 USDC Arbitrum0.99945
Oct 28, 20260.999191 USDC Arbitrum0.999571
Oct 27, 20260.998791 USDC Arbitrum0.999494
Oct 26, 20260.998592 USDC Arbitrum0.999386
Oct 25, 20260.998891 USDC Arbitrum0.999385
Oct 24, 20260.998692 USDC Arbitrum0.999556
Oct 23, 20260.998791 USDC Arbitrum0.999505
Oct 22, 20260.99929 USDC Arbitrum0.999479
Oct 21, 20260.999091 USDC Arbitrum0.999691
Oct 20, 20260.99929 USDC Arbitrum0.999493
Oct 19, 20260.998991 USDC Arbitrum0.999321

Our own rate is recorded every hour, and the table keeps the last entry of the day. The column beside it is the ratio of the prices of the same two coins on CoinGecko at that same hour. How these numbers are counted

Market data: USDT and USDC

Tether USDT
Price
$0.999532
24 hours
+0.03%
Week
+0.04%
Market cap
$180.04 B
24-hour turnover
$25.71 B
Rank by cap
#3
In circulation
180.12 B USDT
All-time high
$1.32
USD Coin USDC
Price
$1.00
24 hours
+0.02%
Week
+0.04%
Market cap
$71.72 B
24-hour turnover
$5.9 B
Rank by cap
#6
In circulation
71.72 B USDC
All-time high
$1.04

Source: CoinGecko, Nov 1, 2026 07:57.

Tether and USD Coin: how they differ

Tether (USDT)USD Coin (USDC)
TickerUSDTUSDC
Typetokentoken
NetworkOptimismArbitrum One
Fees are paid inETHETH
Launched20142018
Built byTether LimitedCircle
Supply capno capno cap
In circulation180.12 B USDT71.72 B USDC
Market cap$180.04 B$71.72 B
Rank by cap#3#6

Daily moves of USDT and USDC over the quarter link at 0.13 (they travel apart).

Compared: OP Mainnet (Optimism) and Arbitrum One

OP Mainnet (Optimism)Arbitrum One
What kind of networkOptimistic rollup (L2)Optimistic rollup (L2)
What pays the feeETHETH
How expensive≈ $0.00015≈ $0.0029
How fastfastfast
Block time~2 sec~0.25 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 USDC token in the Arbitrum One networkThe very same stablecoin: turning USDT into USDC is one more operation
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 Arbitrum One coin needed for feesNot required to receiveAs a rule yes, otherwise the funds cannot be claimed or moved on
When it arrivesAs soon as OP Mainnet (Optimism) 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

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

Why people take the USDT Optimism → USDC Arbitrum route

  • It works both waysThe USDC Arbitrum → USDT Optimism direction is open as well — going back into USDT takes the same route and the same automation.

Common questions: USDT Optimism → USDC Arbitrum

What rate does USDT Optimism to USDC Arbitrum run at?
As of Nov 1, 2026 08:24 it is 1 USDT Optimism = 0.998592 USDC Arbitrum. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.998592.
What amounts does USDT Optimism → USDC Arbitrum accept?
From 100.67 to 10,000,000 USDT Optimism per order. The floor is roughly $100.62.
Why can I not swap less than 100.67 USDT Optimism?
The network fee and the handling do not depend on the amount. On a transfer below 100.67 USDT 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 USDT Optimism, and the blockchain takes that one.
How long does swapping USDT Optimism for USDC Arbitrum 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. A block in Optimism closes in about 2 sec.
Will real USDC be credited, or a wrapper?
USDC Arbitrum is the ordinary USDC token of the Arbitrum One network: exactly the same one an exchange sends when you withdraw into this blockchain.
Is ETH needed to receive USDC Arbitrum?
Not to receive. ETH comes in handy later, when you decide to move USDC from your address.
Which network will USDC Arbitrum arrive in?
The payout goes out on Arbitrum One. 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 USDT Optimism to USDC Arbitrum rate do over the month?
Over the month, minus 0.03%: a low of 0.999117, a high of 0.999991, an average of 0.999556 USDC Arbitrum per 1 USDT Optimism.
Can I swap back, USDC Arbitrum for USDT Optimism?
Yes, the reverse is open too: 1 USDC Arbitrum = 1.0014 USDT Optimism. The link to switch sits under the calculator.

Related reading

Other directions

The other way round

Send USDT Optimism, receive something else

Receive USDC Arbitrum, send something else

USDT Optimism USDC Arbitrum All directions All currencies

Tether (USDT) and USD Coin (USDC): a comparison

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

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