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  1. Swap USD Coin (USDC Arbitrum) for Tether (USDT Arbitrum)

Swap USD Coin (USDC Arbitrum) for Tether (USDT Arbitrum)

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 18, 2026 22:58

Orders from
200 USDC Arbitrum ≈ $199.95
Payout network
Arbitrum One
24 hours
−0.02%
You get 2,000.8 USDT Arbitrum
Start the order
Rate
1 USDC Arbitrum = 1.0004 USDT Arbitrum
From
200 USDC Arbitrum
Up to
10,000,000 USDC Arbitrum

The figure is indicative; the exact amount is locked in the order.

Today USDC Arbitrum goes for 1.0004 USDT Arbitrum, and USDT Arbitrum goes for 0.9996 USDC Arbitrum. Market over 24 hours: USDC Arbitrum against USDT Arbitrum minus 0.02%. The week added plus 0.01%.

The weekly corridor ran from 1 to 1.0004 USDT Arbitrum, a spread of 0.04%. A single order takes 200 to 10,000,000 USDC Arbitrum. In dollars that is roughly $199.95.

The payout leaves in the Arbitrum One network, so the receiving address has to belong to that network. By market cap USD Coin sits 6th ($73.94 B) and Tether 3th ($183.37 B). Daily moves of USDC and USDT over 90 days line up at 0.15 (they travel apart).

Who takes the USDC Arbitrum → USDT Arbitrum route

  • A road both waysThe USDT Arbitrum → USDC Arbitrum direction is open too, so going back into USDC takes the same route.

USDC Arbitrum → USDT Arbitrum rate and amounts

1 USDC Arbitrum = 1.0004 USDT Arbitrum
1 USDT Arbitrum = 0.9996 USDC Arbitrum

Send USDC Arbitrum — receive USDT Arbitrum

USDC ArbitrumUSDT Arbitrum
200200.08
1,0001,000.4
2,0002,000.8
10,00010,004
20,00020,008
100,000100,040

Need USDT Arbitrum — send this much USDC Arbitrum

USDT ArbitrumUSDC Arbitrum
500499.8001
1,000999.6002
5,0004,998
10,0009,996
50,00049,980.01
100,00099,960.02

Payout network for USDT

The same USDT goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.

NetworkPer USDC ArbitrumFromNetwork feeSpeed
OMNI1.0004———
Ethereum (ERC20)1.0004200 USDC Arbitrum≈ $0.033medium
TRON (TRC20)1.0004200 USDC Arbitrum≈ $2.3fast
BNB Smart Chain (BEP20)1.0004200 USDC Arbitrum≈ $0.0025fast
Solana1.0004200 USDC Arbitrum≈ $0.00056fast
Polygon1.0004200 USDC Arbitrum≈ $0.0019fast
Arbitrum One open now1.0004200 USDC Arbitrum≈ $0.0035fast
TON1.0004200 USDC Arbitrumlowfast
Avalanche C-Chain1.0004—≈ $0.00056fast
NEAR1.0004———
Optimism1.0004—≈ $0.00018fast

USDT network fees

How the USDC Arbitrum → USDT Arbitrum order runs

  1. Work out the amount in the calculator: orders start at 200 USDC Arbitrum.
  2. Enter a USDT address in Arbitrum One and a way to reach you.
  3. Send USDC Arbitrum in Arbitrum One for exactly the amount stated in the order.
  4. Once the network confirms your transfer, Tether leaves for your address. The order page tracks every step.

Swap USDC Arbitrum for USDT Arbitrum

Check this before sending USDC Arbitrum

  • The address network is Arbitrum One. Sending through another network usually means losing the transfer.
  • The transfer must not be smaller than 200 USDC Arbitrum.
  • 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 USDC Arbitrum to USDT Arbitrum rate has been

high 1.0004 USDT Arbitrumlow 1 USDT Arbitrum
Sep 11, 2026 23:01Sep 18, 2026 23:01
high 1.0004 USDT Arbitrumlow 0.999785 USDT Arbitrum
Aug 19, 2026 03:00Sep 18, 2026 03:00
high 1.0007 USDT Arbitrumlow 0.999785 USDT Arbitrum
Jun 20, 2026 03:00Sep 18, 2026 03:00
high 1.0032 USDT Arbitrumlow 0.998284 USDT Arbitrum
Sep 19, 2025 03:00Sep 18, 2026 03:00
24 hours
−0.02%
Week
+0.01%
Weekly high
1.0004 USDT Arbitrum
Weekly low
1 USDT Arbitrum
Spread
0.04%

Market data from CoinGecko as of Sep 18, 2026 21:54; the exchange rate is calculated separately and differs. Where these numbers come from

How far USDC Arbitrum/USDT Arbitrum travelled, by period

PeriodHighLowMiddleNet move
24 hours1.00041.00011.0003−0.02%
Week1.000411.0002+0.01%
Month1.00040.9997851.00010%
Quarter1.00070.9997851.0003+0.01%

Figures are in USDT Arbitrum per unit sent, from market data.

Daily USDC Arbitrum → USDT Arbitrum rate

DayCloseAgainst the day before
Sep 18, 20261.0004 USDT Arbitrum0%
Sep 17, 20261.0003 USDT Arbitrum0%
Sep 16, 20261.0003 USDT Arbitrum+0.03%
Sep 15, 20261 USDT Arbitrum−0.01%
Sep 14, 20261.0002 USDT Arbitrum+0.01%
Sep 13, 20261.0001 USDT Arbitrum0%
Sep 12, 20261 USDT Arbitrum−0.02%

Daily RubyCash rate: USDC Arbitrum → USDT Arbitrum

DateRubyCash rateMarket rate
Sep 18, 20261.0005 USDT Arbitrum1.0002
Sep 17, 20261.001 USDT Arbitrum1.0003
Sep 16, 20261.0007 USDT Arbitrum1.0003

Our own rate is written down every hour; the table keeps the last entry of each day. The market column is the ratio of the same two coins on CoinGecko at that moment. Where these numbers come from

The numbers on USDC and USDT

USD Coin USDC
Price
$0.999741
24 hours
+0.02%
Week
0%
Market cap
$73.94 B
24-hour turnover
$21.2 B
Rank by cap
#6
In circulation
73.96 B USDC
Record price
$1.04
Tether USDT
Price
$0.999587
24 hours
+0.04%
Week
0%
Market cap
$183.37 B
24-hour turnover
$78.63 B
Rank by cap
#3
In circulation
183.44 B USDT
Record price
$1.32

Source: CoinGecko, Sep 18, 2026 21:54.

USD Coin against Tether

USD Coin (USDC)Tether (USDT)
TickerUSDCUSDT
Typetokentoken
NetworkArbitrum OneArbitrum One
Fees are paid inETHETH
Launched20182014
Built byCircleTether Limited
Supply capno capno cap
In circulation73.96 B USDC183.44 B USDT
Market cap$73.94 B$183.37 B
Rank by cap#6#3

Daily moves of USDC and USDT over 90 days line up at 0.15 — they travel apart.

Common questions: USDC Arbitrum → USDT Arbitrum

What rate does USDC Arbitrum to USDT Arbitrum run at?
As of Sep 18, 2026 22:58 it is 1 USDC Arbitrum = 1.0004 USDT Arbitrum. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.999987.
What amounts does USDC Arbitrum → USDT Arbitrum accept?
From 200 to 10,000,000 USDC Arbitrum per order. The lower limit is roughly $199.95.
Where does the 200 USDC Arbitrum floor come from?
Network fees and order handling eat a small transfer alive — below 200 USDC Arbitrum the swap stops making sense for either side.
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 USDC Arbitrum, and that one goes to the blockchain, not to us.
How long does USDC Arbitrum to USDT Arbitrum take?
The clock starts with confirmations: the order goes into work once Arbitrum One confirms your transfer. After that it comes down to how busy the network is.
Which network will USDT Arbitrum arrive in?
The payout leaves in Arbitrum One. Make sure the receiving wallet works with that network.
Where is receiving USDT cheaper?
The cheapest is usually USDT BEP20, USDT SOL, USDT Polygon, USDT Arbitrum, USDT TON, USDT AVAX C, USDT 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 USDC Arbitrum to USDT Arbitrum rate do this month?
The month came in at a move of 0%. Low 0.999785, high 1.0004, middle 1.0001 USDT Arbitrum per USDC Arbitrum.
Can I go back, USDT Arbitrum to USDC Arbitrum?
Yes, the reverse direction is open: 1 USDT Arbitrum = 0.9998 USDC Arbitrum. The link sits right under the calculator.

Worth reading

Where else this can go

The other way round

Send USDC Arbitrum, receive something else

Receive USDT Arbitrum, send something else

USDC Arbitrum USDT Arbitrum All directions All currencies

USD Coin (USDC) against Tether (USDT)

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