Swap Tether (USDT Optimism) for USD Coin (USDC XLM)
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 18:53
- Payout network
- XLM
- 24 hours
- −0.01%
The direction runs at 0.9996 USDC XLM per USDT Optimism, or 1.0004 USDT Optimism per USDC XLM. Market over 24 hours: USDT Optimism against USDC XLM minus 0.01%. The week added minus 0.03%.
The weekly corridor ran from 0.999474 to 0.999997 USDC XLM, a spread of 0.05%.
The payout leaves in the XLM network, so the receiving address has to belong to that network. By market cap Tether sits 3th ($183.3 B) and USD Coin 6th ($73.56 B). Daily moves of USDT and USDC over 90 days line up at 0.16 (they travel apart).
Who takes the USDT Optimism → USDC XLM route
- A road both waysThe USDC XLM → USDT Optimism direction is open too, so going back into USDT takes the same route.
USDT Optimism → USDC XLM rate and amounts
Send USDT Optimism — receive USDC XLM
| USDT Optimism | USDC XLM |
|---|---|
| 20 | 19.992 |
| 100 | 99.96 |
| 500 | 499.8001 |
| 5,000 | 4,998 |
| 20,000 | 19,992 |
| 100,000 | 99,960.02 |
Need USDC XLM — send this much USDT Optimism
| USDC XLM | USDT Optimism |
|---|---|
| 20 | 20.008 |
| 100 | 100.04 |
| 500 | 500.2 |
| 5,000 | 5,002 |
| 20,000 | 20,008 |
| 100,000 | 100,040 |
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) | 0.9996 | 200 USDT Optimism | ≈ $0.12 | medium |
| Solana | 0.9996 | 200 USDT Optimism | ≈ $0.00051 | fast |
| Polygon | 0.9996 | 200 USDT Optimism | ≈ $0.0018 | fast |
| Arbitrum One | 0.9996 | — | ≈ $0.0036 | fast |
| BASE | 0.9996 | — | — | — |
| BNB Smart Chain (BEP20) | 0.9996 | — | ≈ $0.0024 | fast |
| Avalanche C-Chain | 0.9996 | — | ≈ < $0.0001 | fast |
| NEAR | 0.9996 | — | — | — |
| Optimism | 0.9996 | — | ≈ $0.0002 | fast |
| XLM open now | 0.9996 | — | — | — |
How the USDT Optimism → USDC XLM order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a USDC address in XLM 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 XLM. 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 XLM rate has been
- 24 hours
- −0.01%
- Week
- −0.03%
- Weekly high
- 0.999997 USDC XLM
- Weekly low
- 0.999474 USDC XLM
- Spread
- 0.05%
Market data from CoinGecko as of Sep 17, 2026 18:54; the exchange rate is calculated separately and differs. Where these numbers come from
How far USDT Optimism/USDC XLM travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 0.999731 | 0.999569 | 0.999629 | −0.01% |
| Week | 0.999997 | 0.999474 | 0.999818 | −0.03% |
| Month | 1.0002 | 0.999577 | 0.999912 | 0% |
| Quarter | 1.0002 | 0.999327 | 0.999705 | 0% |
Figures are in USDC XLM per unit sent, from market data.
Daily USDT Optimism → USDC XLM rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 17, 2026 | 0.999591 USDC XLM | −0.01% |
| Sep 16, 2026 | 0.999723 USDC XLM | −0.03% |
| Sep 15, 2026 | 0.999985 USDC XLM | +0.01% |
| Sep 14, 2026 | 0.999848 USDC XLM | −0.01% |
| Sep 13, 2026 | 0.999949 USDC XLM | 0% |
| Sep 12, 2026 | 0.999966 USDC XLM | +0.02% |
| Sep 11, 2026 | 0.999808 USDC XLM | 0% |
The numbers on USDT and USDC
- Price
- $0.999248
- 24 hours
- −0.03%
- Week
- −0.1%
- Market cap
- $183.3 B
- 24-hour turnover
- $62.39 B
- Rank by cap
- #3
- In circulation
- 183.44 B USDT
- Record price
- $1.32
- Price
- $0.999605
- 24 hours
- −0.02%
- Week
- 0%
- Market cap
- $73.56 B
- 24-hour turnover
- $19.78 B
- Rank by cap
- #6
- In circulation
- 73.59 B USDC
- Record price
- $1.04
Source: CoinGecko, Sep 17, 2026 18:54.
Tether against USD Coin
| Tether (USDT) | USD Coin (USDC) | |
|---|---|---|
| Ticker | USDT | USDC |
| Type | token | token |
| Network | Optimism | XLM |
| Fees are paid in | ETH | — |
| Launched | 2014 | 2018 |
| Built by | Tether Limited | Circle |
| Supply cap | no cap | no cap |
| In circulation | 183.44 B USDT | 73.59 B USDC |
| Market cap | $183.3 B | $73.56 B |
| Rank by cap | #3 | #6 |
Daily moves of USDT and USDC over 90 days line up at 0.16 — they travel apart.