Stablecoins from Arbitrum One to OP Mainnet (Optimism): USDC Arbitrum → USDT Optimism

Q: What rate does USDC Arbitrum to USDT Optimism run at?

As of Sep 17, 2026 03:08 it is 1 USDC Arbitrum = 1.0008 USDT Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $1.00.

Q: What else is taken on top of the rate?

The payout is already calculated at the rate in the calculator. On top of it you only pay the network fee for sending USDC Arbitrum, and that one goes to the blockchain, not to us.

Q: How long does USDC Arbitrum to USDT Optimism take?

The clock starts with confirmations: the order goes into work once Arbitrum One confirms your transfer. After that it comes down to how busy the network is. A block in Arbitrum One closes in about 0.25 sec.

Q: Which network will USDT Optimism arrive in?

The payout leaves in Optimism. Make sure the receiving wallet works with that network.

Q: Where is receiving USDT cheaper?

The cheapest is usually USDT BEP20, USDT SOL, USDT Polygon, USDT Arbitrum, USDT TON, USDT AVAX C, USDT Optimism. Still, the network is chosen by what the recipient supports, not by the fee.

Q: Will native USDT arrive, or a wrapper?

USDT Optimism is the standard USDT token in OP Mainnet (Optimism) — exactly what exchanges send when they withdraw into this network.

Q: Do I need ETH to receive USDT Optimism?

Not to receive. ETH comes into play later, when you want to send USDT from your address.

Q: What if the rate moves while I am paying?

The rate is pinned to the order and does not move while the order is alive. It can be recalculated if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.

Q: Can I go back, USDT Optimism to USDC Arbitrum?

Yes, the reverse direction is open: 1 USDT Optimism = 0.9994 USDC Arbitrum. The link sits right under the calculator.

Today USDC Arbitrum goes for 1.0008 USDT Optimism, and USDT Optimism goes for 0.999201 USDC Arbitrum. Market over 24 hours: USDC Arbitrum against USDT Optimism plus 0.01%. The week added plus 0.04%.

The weekly corridor ran from 1 to 1.0005 USDT Optimism, a spread of 0.05%.

The payout leaves in the Optimism network, so the receiving address has to belong to that network. By market cap USD Coin sits 6th ($73.61 B) and Tether 3th ($183.33 B).

Who takes the USDC Arbitrum → USDT Optimism route

A road both waysThe USDT Optimism → USDC Arbitrum direction is open too, so going back into USDC takes the same route.

USDC Arbitrum → USDT Optimism rate and amounts

1 USDC Arbitrum = 1.0008 USDT Optimism

1 USDT Optimism = 0.999201 USDC Arbitrum

Send USDC Arbitrum — receive USDT Optimism

USDC Arbitrum	USDT Optimism
20	20.016
100	100.08
500	500.4
5,000	5,004
20,000	20,016
100,000	100,080.01

Need USDT Optimism — send this much USDC Arbitrum

USDT Optimism	USDC Arbitrum
20	19.984
100	99.9201
500	499.6003
5,000	4,996
20,000	19,984.01
100,000	99,920.06

Payout network for USDT

The same USDT goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.

Network	Per USDC Arbitrum	From	Network fee	Speed
OMNI	1.0008	—	—	—
Ethereum (ERC20)	1.0008	200 USDC Arbitrum	≈ $0.013	medium
TRON (TRC20)	1.0008	200 USDC Arbitrum	≈ $2.3	fast
BNB Smart Chain (BEP20)	1.0008	200 USDC Arbitrum	≈ $0.0023	fast
Solana	1.0008	200 USDC Arbitrum	≈ $0.00049	fast
Polygon	1.0008	200 USDC Arbitrum	≈ $0.0017	fast
Arbitrum One	1.0008	200 USDC Arbitrum	≈ $0.0031	fast
TON	1.0008	200 USDC Arbitrum	low	fast
Avalanche C-Chain	1.0008	—	≈ < $0.0001	fast
NEAR	1.0008	—	—	—
Optimism open now	1.0008	—	≈ $0.00016	fast

USDT network fees

How the USDC Arbitrum → USDT Optimism order runs

Work out the amount in the calculator and press the exchange button.
Enter a USDT address in Optimism and a way to reach you.
Send USDC Arbitrum in Arbitrum One for exactly the amount stated in the order.
Once the network confirms your transfer, Tether leaves for your address. The order page tracks every step.

Swap USDC Arbitrum for USDT Optimism

Check this before sending USDC Arbitrum

The address network is Optimism. Sending through another network usually means losing the transfer.
Copy the address whole, then compare the first and last characters after pasting.
Ethereum, Arbitrum, Optimism, BNB Smart Chain and Polygon all use the same address shape (0x…). Make sure the wallet is switched to OP Mainnet (Optimism).
To move USDT on later, put a little ETH at the same address.
Coins go through an AML check: a flagged transfer can be held until the check is finished.

Arbitrum One against OP Mainnet (Optimism)

	Arbitrum One	OP Mainnet (Optimism)
Network type	L2, optimistic rollup	L2, optimistic rollup
Fees are paid in	ETH	ETH
Fee level	≈ $0.0031	≈ $0.00016
Speed	fast	fast
Block	~0.25 sec	~2 sec
Address shape	0x…	0x…
Memo or tag	not needed	not needed
Ethereum-style address (0x…)	yes	yes
Official withdrawal to Ethereum	≈ 7 days (challenge period)	≈ 7 days (challenge period)

Fee and speed levels are comparative: both move with how busy the network is.

How this differs from a classic bridge

	RubyCash	Classic bridge
What lands at your address	USDT in OP Mainnet (Optimism)	The same stablecoin; turning USDT into USDC is a separate step
Wallet and signatures	Not needed: the coins go to the address from the order	Needed: connect the wallet and sign contract transactions
A coin for fees in OP Mainnet (Optimism)	Not needed to receive	Often needed, or the funds cannot be claimed or moved on
Timing	After confirmations in Arbitrum One; the order page tracks it	Depends on the bridge and the load of both networks
Who holds the funds meanwhile	RubyCash for the life of the order, with an AML check	The bridge contract or its validators

Bridge Arbitrum One → OP Mainnet (Optimism): all directions The OP Mainnet (Optimism) network

Where the USDC Arbitrum to USDT Optimism rate has been

Week

high 1.0005 USDT Optimismlow 1 USDT Optimism

Sep 10, 2026 03:08Sep 17, 2026 03:08

24 hours: +0.01%
Week: +0.04%
Weekly high: 1.0005 USDT Optimism
Weekly low: 1 USDT Optimism
Spread: 0.05%

Market data from CoinGecko as of Sep 17, 2026 00:54; the exchange rate is calculated separately and differs. Where these numbers come from

How far USDC Arbitrum/USDT Optimism travelled, by period

Period	High	Low	Middle	Net move
24 hours	1.0004	1.0003	1.0003	+0.01%
Week	1.0005	1	1.0002	+0.04%

Figures are in USDT Optimism per unit sent, from market data.

The numbers on USDC and USDT

USD Coin USDC

Price: $0.999724
24 hours: 0%
Week: 0%
Market cap: $73.61 B
24-hour turnover: $18.36 B
Rank by cap: #6
In circulation: 73.63 B USDC
Record price: $1.04

Tether USDT

Price: $0.99939
24 hours: −0.01%
Week: −0.1%
Market cap: $183.33 B
24-hour turnover: $59.59 B
Rank by cap: #3
In circulation: 183.44 B USDT
Record price: $1.32

Source: CoinGecko, Sep 17, 2026 00:54.

USD Coin against Tether

	USD Coin (USDC)	Tether (USDT)
Ticker	USDC	USDT
Type	token	token
Network	Arbitrum One	Optimism
Fees are paid in	ETH	ETH
Launched	2018	2014
Built by	Circle	Tether Limited
Supply cap	no cap	no cap
In circulation	73.63 B USDC	183.44 B USDT
Market cap	$73.61 B	$183.33 B
Rank by cap	#6	#3

Common questions: USDC Arbitrum → USDT Optimism

What rate does USDC Arbitrum to USDT Optimism run at?

As of Sep 17, 2026 03:08 it is 1 USDC Arbitrum = 1.0008 USDT Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $1.00.

What else is taken on top of the rate?

The payout is already calculated at the rate in the calculator. On top of it you only pay the network fee for sending USDC Arbitrum, and that one goes to the blockchain, not to us.

How long does USDC Arbitrum to USDT Optimism take?

The clock starts with confirmations: the order goes into work once Arbitrum One confirms your transfer. After that it comes down to how busy the network is. A block in Arbitrum One closes in about 0.25 sec.

Which network will USDT Optimism arrive in?

The payout leaves in Optimism. Make sure the receiving wallet works with that network.

Where is receiving USDT cheaper?

The cheapest is usually USDT BEP20, USDT SOL, USDT Polygon, USDT Arbitrum, USDT TON, USDT AVAX C, USDT Optimism. Still, the network is chosen by what the recipient supports, not by the fee.

Will native USDT arrive, or a wrapper?

USDT Optimism is the standard USDT token in OP Mainnet (Optimism) — exactly what exchanges send when they withdraw into this network.

Do I need ETH to receive USDT Optimism?

Not to receive. ETH comes into play later, when you want to send USDT from your address.

What if the rate moves while I am paying?

The rate is pinned to the order and does not move while the order is alive. It can be recalculated if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.

Can I go back, USDT Optimism to USDC Arbitrum?

Yes, the reverse direction is open: 1 USDT Optimism = 0.9994 USDC Arbitrum. The link sits right under the calculator.