Tether (USDT Optimism) → Ethereum (ETH Arbitrum)

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

As of Sep 30, 2026 17:20 it is 1 USDT Optimism = 0.000371033 ETH Arbitrum. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.999753.

Q: What amounts does USDT Optimism → ETH Arbitrum accept?

From 100.67 to 10,000,000 USDT Optimism per order. The floor is roughly $100.63.

Q: 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.

Q: 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.

Q: How long does swapping USDT Optimism for ETH 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.

Q: Which network will ETH Arbitrum arrive in?

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

Q: Which network is cheaper for receiving ETH?

Usually ETH BEP20, ETH Arbitrum, ETH Optimism works out cheaper. Still, the network is picked by what the recipient accepts, not by the fee.

Q: 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.

Q: What did the USDT Optimism to ETH Arbitrum rate do over the month?

Over the month, minus 10.2%: a low of 0.000360264, a high of 0.000418142, an average of 0.000392818 ETH Arbitrum per 1 USDT Optimism.

Q: Can I swap back, ETH Arbitrum for USDT Optimism?

Yes, the reverse is open too: 1 ETH Arbitrum = 2,695.12 USDT Optimism. The link to switch sits under the calculator.

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 USDT Optimism → ETH Arbitrum 1 USDT Optimism = 0.000371033 ETH Arbitrum 1 ETH Arbitrum = 2,695.18 USDT Optimism

Rate as of Sep 30, 2026 17:20

Orders from: 100.67 USDT Optimism ≈ $100.63
Payout network: Arbitrum One
24 hours: +1.44%

You send

USDT Optimism

You get 0.742066

ETH Arbitrum

Create the order

Rate: 1 USDT Optimism = 0.000371033 ETH Arbitrum
From: 100.67 USDT Optimism
Up to: 10,000,000 USDT Optimism

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

The direction is holding at 0.000371033 ETH Arbitrum per 1 USDT Optimism (2,695.18 USDT Optimism per 1 ETH Arbitrum). Over 24 hours USDT Optimism/ETH Arbitrum came in at plus 1.44%. Over the week, plus 1.83%.

The weekly range ran from 0.00036521 to 0.000377526 ETH Arbitrum, a spread of 3.37%. One order takes from 100.67 to 10,000,000 USDT Optimism. In dollars that is roughly $100.63.

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 ($183.8 B) and Ethereum at No. 2 ($328.98 B). Over 90 days the daily moves of USDT and ETH correlate at 0.15 (they travel apart).

Which network ETH arrives in

The same ETH 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 USDT Optimism	From	Network fee	Speed
Ethereum	0.000371033	100.67 USDT Optimism	≈ $0.012	—
BNB Smart Chain (BEP20)	0.000371033	100.67 USDT Optimism	≈ $0.0025	fast
Arbitrum One open	0.000371033	100.67 USDT Optimism	≈ $0.0012	fast
BASE	0.000371033	100.67 USDT Optimism	—	—
Optimism	0.000371033	100.67 USDT Optimism	≈ < $0.0001	fast

Rate and amounts for USDT Optimism → ETH Arbitrum

Send USDT Optimism — receive ETH ArbitrumNeed ETH Arbitrum — send this much USDT Optimism

USDT Optimism	ETH Arbitrum
200	0.0742066
1,000	0.371033
2,000	0.742066
10,000	3.7103
20,000	7.4207
100,000	37.1033

ETH Arbitrum	USDT Optimism
0.05	134.7588
0.2	539.0354
0.5	1,347.59
2	5,390.35
5	13,475.88
20	53,903.54

How the USDT Optimism → ETH Arbitrum exchange runs

Work out the amount in the calculator — orders start at 100.67 USDT Optimism.
Give a ETH address on Arbitrum One and a contact for the order.
Send USDT 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 Ethereum to your address. The order page shows the status.

Swap USDT Optimism for ETH 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.
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 ETH Arbitrum rate has moved

WeekMonthQuarterYear

high 0.000377526 ETH Arbitrumlow 0.00036521 ETH Arbitrum

Sep 23, 2026 17:22Sep 30, 2026 17:22

high 0.000418142 ETH Arbitrumlow 0.000360264 ETH Arbitrum

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

high 0.000621216 ETH Arbitrumlow 0.000360264 ETH Arbitrum

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

high 0.000637806 ETH Arbitrumlow 0.00021325 ETH Arbitrum

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

24 hours: +1.44%
Week: +1.83%
Weekly high: 0.000377526 ETH Arbitrum
Weekly low: 0.00036521 ETH Arbitrum
Spread: 3.37%

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 USDT Optimism/ETH Arbitrum spread by period

Period	High	Low	Middle	Period result
24 hours	0.000375564	0.000365403	0.000372048	+1.44%
Week	0.000377526	0.00036521	0.000372404	+1.83%
Month	0.000418142	0.000360264	0.000392818	−10.2%
Quarter	0.000621216	0.000360264	0.000473913	−40.18%

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

Daily USDT Optimism → ETH Arbitrum rate

Day	Close	Against the day before
Sep 30, 2026	0.000371598 ETH Arbitrum	−0.09%
Sep 29, 2026	0.000371915 ETH Arbitrum	−0.02%
Sep 28, 2026	0.000371997 ETH Arbitrum	+0.29%
Sep 27, 2026	0.000370913 ETH Arbitrum	−0.18%
Sep 26, 2026	0.000371566 ETH Arbitrum	−0.12%
Sep 25, 2026	0.000372031 ETH Arbitrum	−0.12%
Sep 24, 2026	0.000372466 ETH Arbitrum	+2.54%

Market data: USDT and ETH

Tether USDT

Price: $0.999612
24 hours: −0.02%
Week: −0.02%
Market cap: $183.8 B
24-hour turnover: $56.31 B
Rank by cap: #3
In circulation: 183.87 B USDT
All-time high: $1.32

Ethereum ETH

Price: $2,694.51
24 hours: −1.44%
Week: −1.42%
Market cap: $328.98 B
24-hour turnover: $13.26 B
Rank by cap: #2
In circulation: 122.09 M ETH
All-time high: $4,946.05

Source: CoinGecko, Sep 30, 2026 16:57.

Tether and Ethereum: how they differ

	Tether (USDT)	Ethereum (ETH)
Ticker	USDT	ETH
Type	token	coin of its own network
Network	Optimism	Arbitrum One
Fees are paid in	ETH	ETH
Launched	2014	2015
Built by	Tether Limited	Vitalik Buterin
Supply cap	no cap	no cap
In circulation	183.87 B USDT	122.09 M ETH
Market cap	$183.8 B	$328.98 B
Rank by cap	#3	#2
Consensus	—	Proof of Stake
Block	—	~12 sec
Privacy	—	transfers are public

Daily moves of USDT and ETH over the quarter link at 0.15 (they travel apart).

Why people take the USDT Optimism → ETH Arbitrum route

Entering ETH from dollarsUSDT goes into Ethereum in one step, with no coin in between: over the last month ETH posted +11.34%.
Fuel for Arbitrum OneWithout Ethereum you cannot pay for a transfer or a contract call in Arbitrum One — the coin is needed for anything that happens in that ecosystem.
Different basketsDaily moves of USDT and ETH over 90 days link at 0.15 (they travel apart) — the weaker the link, the less a portfolio rests on one coin.

Common questions: USDT Optimism → ETH Arbitrum

What rate does USDT Optimism to ETH Arbitrum run at?

As of Sep 30, 2026 17:20 it is 1 USDT Optimism = 0.000371033 ETH Arbitrum. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.999753.

What amounts does USDT Optimism → ETH Arbitrum accept?

From 100.67 to 10,000,000 USDT Optimism per order. The floor is roughly $100.63.

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 ETH 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.

Which network will ETH Arbitrum arrive in?

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

Which network is cheaper for receiving ETH?

Usually ETH BEP20, ETH Arbitrum, ETH Optimism 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 ETH Arbitrum rate do over the month?