USDT Optimism (OP Mainnet (Optimism)) → USDC Arbitrum (Arbitrum One)
Dollars change networks: send USDT Optimism in OP Mainnet (Optimism), collect USDC Arbitrum in Arbitrum One. One order.
Rate as of Sep 17, 2026 22:43
- Payout network
- Arbitrum One
- 24 hours
- 0%
You get
USDC Arbitrum
Start the order
USDC Arbitrum
The figure is indicative; the exact amount is locked in the order.
The direction runs at 0.9994 USDC Arbitrum per USDT Optimism, or 1.0006 USDT Optimism per USDC Arbitrum. Market over 24 hours: USDT Optimism against USDC Arbitrum a move of 0%. The week added minus 0.01%.
The weekly corridor ran from 0.999536 to 0.999997 USDC Arbitrum, a spread of 0.05%.
The payout leaves in the Arbitrum One network, so the receiving address has to belong to that network. By market cap Tether sits 3th ($183.3 B) and USD Coin 6th ($73.68 B). Daily moves of USDT and USDC over 90 days line up at 0.16 (they travel apart).
Who takes the USDT Optimism → USDC Arbitrum route
- A road both waysThe USDC Arbitrum → USDT Optimism direction is open too, so going back into USDT takes the same route.
USDT Optimism → USDC Arbitrum rate and amounts
1 USDT Optimism = 0.9994 USDC Arbitrum
1 USDC Arbitrum = 1.0006 USDT Optimism
Send USDT Optimism — receive USDC Arbitrum
| USDT Optimism | USDC Arbitrum |
|---|---|
| 20 | 19.988 |
| 100 | 99.94 |
| 500 | 499.7002 |
| 5,000 | 4,997 |
| 20,000 | 19,988.01 |
| 100,000 | 99,940.04 |
Need USDC Arbitrum — send this much USDT Optimism
| USDC Arbitrum | USDT Optimism |
|---|---|
| 20 | 20.012 |
| 100 | 100.06 |
| 500 | 500.3 |
| 5,000 | 5,003 |
| 20,000 | 20,012 |
| 100,000 | 100,059.99 |
Payout network for USDC
The same USDC goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.
| Network | Per USDT Optimism | From | Network fee | Speed |
|---|---|---|---|---|
| Ethereum (ERC20) | 0.9994 | 200 USDT Optimism | ≈ $0.018 | medium |
| Solana | 0.9994 | 200 USDT Optimism | ≈ $0.0005 | fast |
| Polygon | 0.9994 | 200 USDT Optimism | ≈ $0.0018 | fast |
| Arbitrum One open now | 0.9994 | — | ≈ $0.0032 | fast |
| BASE | 0.9994 | — | — | — |
| BNB Smart Chain (BEP20) | 0.9994 | — | ≈ $0.0024 | fast |
| Avalanche C-Chain | 0.9994 | — | ≈ < $0.0001 | fast |
| NEAR | 0.9994 | — | — | — |
| Optimism | 0.9994 | — | ≈ $0.00016 | fast |
| XLM | 0.9994 | — | — | — |
How the USDT Optimism → USDC Arbitrum order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a USDC address in Arbitrum One 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, USD Coin leaves for your address. The order page tracks every step.
Check this before sending USDT Optimism
- The address network is Arbitrum One. 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 Arbitrum One.
- To move USDC 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.
OP Mainnet (Optimism) against Arbitrum One
| OP Mainnet (Optimism) | Arbitrum One | |
|---|---|---|
| Network type | L2, optimistic rollup | L2, optimistic rollup |
| Fees are paid in | ETH | ETH |
| Fee level | ≈ $0.00016 | ≈ $0.0032 |
| Speed | fast | fast |
| Block | ~2 sec | ~0.25 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 | USDC in Arbitrum One | 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 Arbitrum One | Not needed to receive | Often needed, or the funds cannot be claimed or moved on |
| Timing | After confirmations in OP Mainnet (Optimism); 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 OP Mainnet (Optimism) → Arbitrum One: all directions The Arbitrum One network
Where the USDT Optimism to USDC Arbitrum rate has been
high 0.999997 USDC Arbitrumlow 0.999536 USDC Arbitrum
Sep 10, 2026 22:44Sep 17, 2026 22:44
high 1.0002 USDC Arbitrumlow 0.999577 USDC Arbitrum
Aug 18, 2026 03:00Sep 17, 2026 03:00
high 1.0002 USDC Arbitrumlow 0.999327 USDC Arbitrum
Jun 19, 2026 03:00Sep 17, 2026 03:00
high 1.0017 USDC Arbitrumlow 0.996801 USDC Arbitrum
Sep 18, 2025 03:00Sep 17, 2026 03:00
- 24 hours
- 0%
- Week
- −0.01%
- Weekly high
- 0.999997 USDC Arbitrum
- Weekly low
- 0.999536 USDC Arbitrum
- Spread
- 0.05%
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/USDC Arbitrum travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 0.999687 | 0.999575 | 0.999617 | 0% |
| Week | 0.999997 | 0.999536 | 0.999818 | −0.01% |
| Month | 1.0002 | 0.999577 | 0.999912 | 0% |
| Quarter | 1.0002 | 0.999327 | 0.999705 | 0% |
Figures are in USDC Arbitrum per unit sent, from market data.
Daily USDT Optimism → USDC Arbitrum rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 17, 2026 | 0.999591 USDC Arbitrum | −0.01% |
| Sep 16, 2026 | 0.999723 USDC Arbitrum | −0.03% |
| Sep 15, 2026 | 0.999985 USDC Arbitrum | +0.01% |
| Sep 14, 2026 | 0.999848 USDC Arbitrum | −0.01% |
| Sep 13, 2026 | 0.999949 USDC Arbitrum | 0% |
| Sep 12, 2026 | 0.999966 USDC Arbitrum | +0.02% |
| Sep 11, 2026 | 0.999808 USDC Arbitrum | 0% |
The numbers on USDT and USDC
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
USD Coin USDC- Price
- $0.999608
- 24 hours
- 0%
- Week
- 0%
- Market cap
- $73.68 B
- 24-hour turnover
- $16.65 B
- Rank by cap
- #6
- In circulation
- 73.71 B USDC
- Record price
- $1.04
Source: CoinGecko, Sep 17, 2026 22:24.
Tether against USD Coin
| Tether (USDT) | USD Coin (USDC) | |
|---|---|---|
| Ticker | USDT | USDC |
| Type | token | token |
| Network | Optimism | Arbitrum One |
| Fees are paid in | ETH | ETH |
| Launched | 2014 | 2018 |
| Built by | Tether Limited | Circle |
| Supply cap | no cap | no cap |
| In circulation | 183.44 B USDT | 73.71 B USDC |
| Market cap | $183.3 B | $73.68 B |
| Rank by cap | #3 | #6 |
Daily moves of USDT and USDC over 90 days line up at 0.16 — they travel apart.
Common questions: USDT Optimism → USDC Arbitrum
What rate does USDT Optimism to USDC Arbitrum run at?
As of Sep 17, 2026 22:43 it is 1 USDT Optimism = 0.9994 USDC Arbitrum. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.999009.
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 USDC Arbitrum 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. A block in Optimism closes in about 2 sec.
Which network will USDC Arbitrum arrive in?
The payout leaves in Arbitrum One. Make sure the receiving wallet works with that network.
Where is receiving USDC cheaper?
The cheapest is usually USDC SOL, USDC Polygon, USDC Arbitrum, USDC BEP20, USDC AVAX C, USDC Optimism. Still, the network is chosen by what the recipient supports, not by the fee.
Will native USDC arrive, or a wrapper?
USDC Arbitrum is the standard USDC token in Arbitrum One — exactly what exchanges send when they withdraw into this network.
Do I need ETH to receive USDC Arbitrum?
Not to receive. ETH comes into play later, when you want to send USDC 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.
What did the USDT Optimism to USDC Arbitrum rate do this month?
The month came in at a move of 0%. Low 0.999577, high 1.0002, middle 0.999912 USDC Arbitrum per USDT Optimism.
Can I go back, USDC Arbitrum to USDT Optimism?
Yes, the reverse direction is open: 1 USDC Arbitrum = 1.0008 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 → USDS0.9994- USDT Optimism → USDT Arbitrum1.0001
- USDT Optimism → USDT BEP201.0001
- USDT Optimism → USDT AVAX C1.0001
- USDT Optimism → USDT ERC201.0001
- USDT Optimism → USDT NEAR1.0001
- USDT Optimism → USDT OMNI1.0001
- USDT Optimism → USDT Polygon1.0001
Receive USDC Arbitrum, send something else
- USDT Polygon → USDC Arbitrum0.9994
- USDT SOL → USDC Arbitrum0.9994
- USDT TON → USDC Arbitrum0.9994
- USDT TRC20 → USDC Arbitrum0.9994
WIF → USDC Arbitrum0.185766
XAI → USDC Arbitrum0.00709285
XAUT → USDC Arbitrum4,352.8
XLM → USDC Arbitrum0.186498
USDT Optimism USDC Arbitrum All directions All currencies
Tether (USDT) against USD Coin (USDC)
Bridge OP Mainnet (Optimism) → Arbitrum One: all directions All bridges