Swap Tether (USDT Optimism) for USD Coin (USDC Optimism)
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 22:53
- Payout network
- Optimism
- 24 hours
- 0%
You get
USDC Optimism
Start the order
USDC Optimism
The figure is indicative; the exact amount is locked in the order.
The direction runs at 0.9994 USDC Optimism per USDT Optimism, or 1.0006 USDT Optimism per USDC Optimism. Market over 24 hours: USDT Optimism against USDC Optimism a move of 0%. The week added minus 0.01%.
The weekly corridor ran from 0.999536 to 0.999997 USDC 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 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 Optimism route
- A road both waysThe USDC Optimism → USDT Optimism direction is open too, so going back into USDT takes the same route.
USDT Optimism → USDC Optimism rate and amounts
1 USDT Optimism = 0.9994 USDC Optimism
1 USDC Optimism = 1.0006 USDT Optimism
Send USDT Optimism — receive USDC Optimism
| USDT Optimism | USDC Optimism |
|---|---|
| 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 Optimism — send this much USDT Optimism
| USDC Optimism | 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 | ≈ $0.017 | medium |
| Solana | 0.9994 | 200 USDT Optimism | ≈ $0.0005 | fast |
| Polygon | 0.9994 | 200 USDT Optimism | ≈ $0.0016 | fast |
| Arbitrum One | 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 open now | 0.9994 | — | ≈ $0.00016 | fast |
| XLM | 0.9994 | — | — | — |
How the USDT Optimism → USDC Optimism order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a USDC address in Optimism 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 Optimism. 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 USDC Optimism rate has been
high 0.999997 USDC Optimismlow 0.999536 USDC Optimism
Sep 10, 2026 22:54Sep 17, 2026 22:54
high 1.0002 USDC Optimismlow 0.999577 USDC Optimism
Aug 18, 2026 03:00Sep 17, 2026 03:00
high 1.0002 USDC Optimismlow 0.999327 USDC Optimism
Jun 19, 2026 03:00Sep 17, 2026 03:00
high 1.0017 USDC Optimismlow 0.996801 USDC Optimism
Sep 18, 2025 03:00Sep 17, 2026 03:00
- 24 hours
- 0%
- Week
- −0.01%
- Weekly high
- 0.999997 USDC Optimism
- Weekly low
- 0.999536 USDC Optimism
- 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 Optimism 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 Optimism per unit sent, from market data.
Daily USDT Optimism → USDC Optimism rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 17, 2026 | 0.999591 USDC Optimism | −0.01% |
| Sep 16, 2026 | 0.999723 USDC Optimism | −0.03% |
| Sep 15, 2026 | 0.999985 USDC Optimism | +0.01% |
| Sep 14, 2026 | 0.999848 USDC Optimism | −0.01% |
| Sep 13, 2026 | 0.999949 USDC Optimism | 0% |
| Sep 12, 2026 | 0.999966 USDC Optimism | +0.02% |
| Sep 11, 2026 | 0.999808 USDC Optimism | 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 | Optimism |
| 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 Optimism
What rate does USDT Optimism to USDC Optimism run at?
As of Sep 17, 2026 22:53 it is 1 USDT Optimism = 0.9994 USDC Optimism. 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 Optimism 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 USDC Optimism arrive in?
The payout leaves in Optimism. 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.
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 Optimism rate do this month?
The month came in at a move of 0%. Low 0.999577, high 1.0002, middle 0.999912 USDC Optimism per USDT Optimism.
Can I go back, USDC Optimism to USDT Optimism?
Yes, the reverse direction is open: 1 USDC Optimism = 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 Optimism, send something else
- USDT Polygon → USDC Optimism0.9994
- USDT SOL → USDC Optimism0.9994
- USDT TON → USDC Optimism0.9994
- USDT TRC20 → USDC Optimism0.9994
WIF → USDC Optimism0.185766
XAI → USDC Optimism0.00710287
XAUT → USDC Optimism4,353.8
XLM → USDC Optimism0.186498