Swap Tether (USDT Optimism) for Arbitrum (ARB)
The calculator does the maths at the live rate, the page lists the limits and the timing. Your rate is locked the moment the order is created.
Rate as of Sep 17, 2026 23:38
- Payout network
- Arbitrum
- 24 hours
- −9.74%
The direction runs at 5.6258 ARB per USDT Optimism, or 0.177754 USDT Optimism per ARB. Market over 24 hours: USDT Optimism against ARB minus 9.74%. The week added minus 18.26%.
The weekly corridor ran from 5.4498 to 7.5416 ARB, a spread of 38.38%.
By market cap Tether sits 3th ($183.3 B) and Arbitrum 69th ($1.2 B). Daily moves of USDT and ARB over 90 days line up at -0.05 (they travel apart).
Who takes the USDT Optimism → ARB route
- Entering ARB from dollarsFrom USDT you step into Arbitrum directly, with no coin in between: over the past month ARB moved +120.09%.
- A DeFi protocol tokenArbitrum lives inside decentralised finance: it governs the protocol and pays for what happens in it.
- Different basketsDaily moves of USDT and ARB over 90 days line up at -0.05 (they travel apart) — the looser the link, the less a portfolio depends on one coin.
USDT Optimism → ARB rate and amounts
1 USDT Optimism = 5.6258 ARB
1 ARB = 0.177754 USDT Optimism
Send USDT Optimism — receive ARB
| USDT Optimism | ARB |
|---|---|
| 20 | 112.5152 |
| 100 | 562.5758 |
| 500 | 2,812.88 |
| 5,000 | 28,128.79 |
| 20,000 | 112,515.15 |
| 100,000 | 562,575.76 |
Need ARB — send this much USDT Optimism
| ARB | USDT Optimism |
|---|---|
| 100 | 17.7754 |
| 500 | 88.8769 |
| 2,000 | 355.5077 |
| 20,000 | 3,555.08 |
| 100,000 | 17,775.38 |
| 500,000 | 88,876.92 |
How the USDT Optimism → ARB order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a ARB address in Arbitrum and a way to reach you.
- Send USDT Optimism in Optimism for exactly the amount stated in the order.
- Once the network confirms your transfer, Arbitrum leaves for your address. The order page tracks every step.
Check this before sending USDT Optimism
- The address network is Arbitrum. Sending through another network usually means losing the transfer.
- Copy the address whole, then compare the first and last characters after pasting.
- Coins go through an AML check: a flagged transfer can be held until the check is finished.
Where the USDT Optimism to ARB rate has been
high 7.5416 ARBlow 5.4498 ARB
Sep 10, 2026 23:39Sep 17, 2026 23:39
high 13.3062 ARBlow 5.2814 ARB
Aug 18, 2026 03:00Sep 17, 2026 03:00
high 13.7398 ARBlow 5.2814 ARB
Jun 19, 2026 03:00Sep 17, 2026 03:00
high 13.7398 ARBlow 1.9039 ARB
Sep 18, 2025 03:00Sep 17, 2026 03:00
- 24 hours
- −9.74%
- Week
- −18.26%
- Weekly high
- 7.5416 ARB
- Weekly low
- 5.4498 ARB
- Spread
- 38.38%
Market data from CoinGecko as of Sep 17, 2026 22:24; the exchange rate is calculated separately and differs. Where these numbers come from
How far USDT Optimism/ARB travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 6.1276 | 5.4498 | 5.9983 | −9.74% |
| Week | 7.5416 | 5.4498 | 6.885 | −18.26% |
| Month | 13.3062 | 5.2814 | 8.9023 | −54.57% |
| Quarter | 13.7398 | 5.2814 | 11.1651 | −48.44% |
Figures are in ARB per unit sent, from market data.
Daily USDT Optimism → ARB rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 17, 2026 | 6.0453 ARB | −8.17% |
| Sep 16, 2026 | 6.5832 ARB | −11.98% |
| Sep 15, 2026 | 7.4789 ARB | −0.29% |
| Sep 14, 2026 | 7.5008 ARB | +5.33% |
| Sep 13, 2026 | 7.1212 ARB | −0.61% |
| Sep 12, 2026 | 7.165 ARB | +0.27% |
| Sep 11, 2026 | 7.1458 ARB | +6.82% |
The numbers on USDT and ARB
Tether USDT- Price
- $0.999239
- 24 hours
- 0%
- Week
- 0%
- Market cap
- $183.3 B
- 24-hour turnover
- $54.05 B
- Rank by cap
- #3
- In circulation
- 183.44 B USDT
- Record price
- $1.32
Arbitrum ARB- Price
- $0.176538
- 24 hours
- +10.79%
- Week
- +19.1%
- Market cap
- $1.2 B
- 24-hour turnover
- $423.65 M
- Rank by cap
- #69
- In circulation
- 6.79 B ARB
- Record price
- $2.39
Source: CoinGecko, Sep 17, 2026 22:24.
Tether against Arbitrum
| Tether (USDT) | Arbitrum (ARB) | |
|---|---|---|
| Ticker | USDT | ARB |
| Type | token | token |
| Network | Optimism | — |
| Fees are paid in | ETH | — |
| Launched | 2014 | 2023 |
| Built by | Tether Limited | Offchain Labs |
| Supply cap | no cap | 10 B ARB |
| In circulation | 183.44 B USDT | 6.79 B ARB |
| Market cap | $183.3 B | $1.2 B |
| Rank by cap | #3 | #69 |
Daily moves of USDT and ARB over 90 days line up at -0.05 — they travel apart.
Common questions: USDT Optimism → ARB
What rate does USDT Optimism to ARB run at?
As of Sep 17, 2026 23:38 it is 1 USDT Optimism = 5.6258 ARB. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.99316.
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 USDT Optimism, and that one goes to the blockchain, not to us.
How long does USDT Optimism to ARB take?
The clock starts with confirmations: the order goes into work once Optimism confirms your transfer. After that it comes down to how busy the network is.
Which network will ARB arrive in?
Arbitrum leaves in its own Arbitrum network — a plain ARB address is all you need.
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.
What did the USDT Optimism to ARB rate do this month?
The month came in at minus 54.57%. Low 5.2814, high 13.3062, middle 8.9023 ARB per USDT Optimism.
Can I go back, ARB to USDT Optimism?
Yes, the reverse direction is open: 1 ARB = 0.179187 USDT Optimism. The link sits right under the calculator.
Worth reading
Where else this can go
The other way round
Send USDT Optimism, receive something else
USDT Optimism → ATOM0.641898
USDT Optimism → AUDIO79.3753
USDT Optimism → AVAX0.131541
USDT Optimism → AVNT10.1674
USDT Optimism → AXS1.0639
USDT Optimism → BANANA0.261004
USDT Optimism → BAND5.4544
USDT Optimism → BCH0.00430412
