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  1. Tether (USDT Optimism) → USD Coin (USDC BASE)

Tether (USDT Optimism) → USD Coin (USDC BASE)

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 → USDC BASE 1 USDT Optimism = 0.998692 USDC BASE 1 USDC BASE = 1.0013 USDT Optimism

Rate as of Nov 1, 2026 07:29

Orders from
100.67 USDT Optimism ≈ $100.62
Payout network
BASE
24 hours
+0.02%
You get 1,997.38 USDC BASE
Create the order
Rate
1 USDT Optimism = 0.998692 USDC BASE
From
100.67 USDT Optimism
Up to
10,000,000 USDT Optimism

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

Right now 1 USDT Optimism gets you 0.998692 USDC BASE; the other way round, 1 USDC BASE is 1.0013 USDT Optimism. Over 24 hours USDT Optimism/USDC BASE came in at plus 0.02%. Over the week, plus 0.01%.

The weekly range ran from 0.998807 to 0.999745 USDC BASE, a spread of 0.09%. One order takes from 100.67 to 10,000,000 USDT Optimism. In dollars that is roughly $100.62.

The robot sends the payout in the BASE 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 ($180.04 B) and USD Coin at No. 6 ($71.71 B). Over 90 days the daily moves of USDT and USDC correlate at 0.13 (they travel apart).

Which network USDC arrives in

The same USDC goes out in several networks. Each has its own rate and its own floor, and the fee is charged by the network itself.

NetworkPer 1 USDT OptimismFromNetwork feeSpeed
Ethereum (ERC20)0.998692100.67 USDT Optimism≈ $0.0055medium
TRON (TRC20)0.998692100.67 USDT Optimism≈ $2.1fast
Solana0.998692100.67 USDT Optimism≈ $0.00048fast
Arbitrum One0.998692100.67 USDT Optimism≈ $0.0029fast
BASE open0.998692100.67 USDT Optimism——
BNB Smart Chain (BEP20)0.998692100.67 USDT Optimism≈ $0.0023fast
Avalanche C-Chain0.998692100.67 USDT Optimism≈ $0.0014fast
NEAR0.998692100.67 USDT Optimism——
Optimism0.998692100.67 USDT Optimism≈ $0.00015fast
Polygon0.998692100.67 USDT Optimism≈ $0.0016fast
XLM0.998692100 USDT Optimism——

Network charges for USDC

Rate and amounts for USDT Optimism → USDC BASE

USDT OptimismUSDC BASE
200199.7383
1,000998.6917
2,0001,997.38
10,0009,986.92
20,00019,973.83
100,00099,869.17
USDC BASEUSDT Optimism
200200.262
1,0001,001.31
2,0002,002.62
10,00010,013.1
20,00020,026.2
100,000100,131

How the USDT Optimism → USDC BASE exchange runs

  1. Work out the amount in the calculator — orders start at 100.67 USDT Optimism.
  2. Give a USDC address on BASE and a contact for the order.
  3. Send USDT Optimism on Optimism, exactly the amount the order shows.
  4. Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends USD Coin to your address. The order page shows the status.

Swap USDT Optimism for USDC BASE

Check this before sending USDT Optimism

  • The address network is BASE. 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 USDC BASE rate has moved

high 0.999745 USDC BASElow 0.998807 USDC BASE
Oct 25, 2026 07:33Nov 1, 2026 07:33
high 0.999991 USDC BASElow 0.999117 USDC BASE
Oct 1, 2026 05:00Oct 31, 2026 05:00
high 1.0002 USDC BASElow 0.999117 USDC BASE
Aug 2, 2026 05:00Oct 31, 2026 05:00
high 1.0031 USDC BASElow 0.996801 USDC BASE
Nov 1, 2025 05:00Oct 31, 2026 05:00
24 hours
+0.02%
Week
+0.01%
Weekly high
0.999745 USDC BASE
Weekly low
0.998807 USDC BASE
Spread
0.09%

Market data from CoinGecko as of Nov 1, 2026 07:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted

The USDT Optimism/USDC BASE spread by period

PeriodHighLowMiddlePeriod result
24 hours0.9995320.9993010.999409+0.02%
Week0.9997450.9988070.999427+0.01%
Month0.9999910.9991170.999556−0.03%
Quarter1.00020.9991170.999739−0.03%

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

Daily USDT Optimism → USDC BASE rate

DayCloseAgainst the day before
Oct 31, 20260.999416 USDC BASE+0.02%
Oct 30, 20260.999176 USDC BASE−0.04%
Oct 29, 20260.999561 USDC BASE+0.01%
Oct 28, 20260.999478 USDC BASE+0.02%
Oct 27, 20260.999325 USDC BASE0%
Oct 26, 20260.999282 USDC BASE−0.03%
Oct 25, 20260.99955 USDC BASE+0.01%

How the Velorex rate moved: USDT Optimism → USDC BASE day by day

DayVelorex rateMarket rate
Nov 1, 20260.998592 USDC BASE0.999521
Oct 31, 20260.998692 USDC BASE0.999467
Oct 30, 20260.998293 USDC BASE0.999293
Oct 29, 20260.998791 USDC BASE0.99945
Oct 28, 20260.999191 USDC BASE0.999571
Oct 27, 20260.998791 USDC BASE0.999494
Oct 26, 20260.998592 USDC BASE0.999386
Oct 25, 20260.998891 USDC BASE0.999385
Oct 24, 20260.998692 USDC BASE0.999556
Oct 23, 20260.998791 USDC BASE0.999505
Oct 22, 20260.99929 USDC BASE0.999479
Oct 21, 20260.999091 USDC BASE0.999691
Oct 20, 20260.99929 USDC BASE0.999493
Oct 19, 20260.998991 USDC BASE0.999321

Our own rate is recorded every hour, and the table keeps the last entry of the day. The column beside it is the ratio of the prices of the same two coins on CoinGecko at that same hour. How these numbers are counted

Market data: USDT and USDC

Tether USDT
Price
$0.999529
24 hours
+0.04%
Week
+0.04%
Market cap
$180.04 B
24-hour turnover
$25.77 B
Rank by cap
#3
In circulation
180.12 B USDT
All-time high
$1.32
USD Coin USDC
Price
$1.00
24 hours
+0.02%
Week
+0.04%
Market cap
$71.71 B
24-hour turnover
$5.9 B
Rank by cap
#6
In circulation
71.71 B USDC
All-time high
$1.04

Source: CoinGecko, Nov 1, 2026 07:27.

Tether and USD Coin: how they differ

Tether (USDT)USD Coin (USDC)
TickerUSDTUSDC
Typetokentoken
NetworkOptimismBASE
Fees are paid inETH—
Launched20142018
Built byTether LimitedCircle
Supply capno capno cap
In circulation180.12 B USDT71.71 B USDC
Market cap$180.04 B$71.71 B
Rank by cap#3#6

Daily moves of USDT and USDC over the quarter link at 0.13 (they travel apart).

Why people take the USDT Optimism → USDC BASE route

  • It works both waysThe USDC BASE → USDT Optimism direction is open as well — going back into USDT takes the same route and the same automation.

Common questions: USDT Optimism → USDC BASE

What rate does USDT Optimism to USDC BASE run at?
As of Nov 1, 2026 07:29 it is 1 USDT Optimism = 0.998692 USDC BASE. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.998692.
What amounts does USDT Optimism → USDC BASE accept?
From 100.67 to 10,000,000 USDT Optimism per order. The floor is roughly $100.62.
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 USDC BASE 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 USDC BASE arrive in?
The payout goes out on BASE. Check that the receiving wallet supports that network.
Which network is cheaper for receiving USDC?
Usually USDC SOL, USDC Arbitrum, USDC BEP20, USDC AVAX C, USDC Optimism, USDC Polygon 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 USDC BASE rate do over the month?
Over the month, minus 0.03%: a low of 0.999117, a high of 0.999991, an average of 0.999556 USDC BASE per 1 USDT Optimism.
Can I swap back, USDC BASE for USDT Optimism?
Yes, the reverse is open too: 1 USDC BASE = 1.0013 USDT Optimism. The link to switch sits under the calculator.

Related reading

Other directions

The other way round

Send USDT Optimism, receive something else

Receive USDC BASE, send something else

USDT Optimism USDC BASE All directions All currencies

Tether (USDT) and USD Coin (USDC): a comparison

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