Stablecoins from Polygon PoS to Arbitrum One: USDT Polygon → USDC Arbitrum

Q: What rate does USDT Polygon to USDC Arbitrum run at?

As of Sep 18, 2026 06:28 it is 1 USDT Polygon = 0.9993 USDC Arbitrum. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.998868.

Q: 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 Polygon, and that one goes to the blockchain, not to us.

Q: How long does USDT Polygon to USDC Arbitrum take?

The clock starts with confirmations: the order goes into work once Polygon confirms your transfer. After that it comes down to how busy the network is. A block in Polygon closes in about 2 sec.

Q: Which network will USDC Arbitrum arrive in?

The payout leaves in Arbitrum One. Make sure the receiving wallet works with that network.

Q: Where is receiving USDC cheaper?

The cheapest is usually USDC Polygon, USDC SOL, USDC Arbitrum, USDC BEP20, USDC AVAX C, USDC Optimism. Still, the network is chosen by what the recipient supports, not by the fee.

Q: 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.

Q: 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.

Q: 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.

Q: What did the USDT Polygon to USDC Arbitrum rate do this month?

The month came in at a move of 0%. Low 0.999642, high 1.0002, middle 0.999917 USDC Arbitrum per USDT Polygon.

Q: Can I go back, USDC Arbitrum to USDT Polygon?

Yes, the reverse direction is open: 1 USDC Arbitrum = 1.0009 USDT Polygon. The link sits right under the calculator.

Today USDT Polygon goes for 0.9993 USDC Arbitrum, and USDC Arbitrum goes for 1.0007 USDT Polygon. Market over 24 hours: USDT Polygon against USDC Arbitrum a move of 0%. The week added a move of 0%.

The weekly corridor ran from 0.999555 to 0.999993 USDC Arbitrum, a spread of 0.04%.

The payout leaves in the Arbitrum One network, so the receiving address has to belong to that network. By market cap Tether sits 3th ($183.29 B) and USD Coin 6th ($73.87 B). Daily moves of USDT and USDC over 90 days line up at 0.15 (they travel apart).

Who takes the USDT Polygon → USDC Arbitrum route

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

USDT Polygon → USDC Arbitrum rate and amounts

1 USDT Polygon = 0.9993 USDC Arbitrum

1 USDC Arbitrum = 1.0007 USDT Polygon

Send USDT Polygon — receive USDC Arbitrum

USDT Polygon	USDC Arbitrum
20	19.986
100	99.93
500	499.6502
5,000	4,996.5
20,000	19,986.01
100,000	99,930.05

Need USDC Arbitrum — send this much USDT Polygon

USDC Arbitrum	USDT Polygon
20	20.014
100	100.07
500	500.35
5,000	5,003.5
20,000	20,014
100,000	100,070

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 Polygon	From	Network fee	Speed
Polygon	0.997396	100 USDT Polygon	≈ $0.0018	fast
Solana	1.001	100 USDT Polygon	≈ $0.00051	fast
Ethereum (ERC20)	1.001	100 USDT Polygon	≈ $0.017	medium
Arbitrum One open now	0.9993	—	≈ $0.0033	fast
BASE	0.9993	—	—	—
BNB Smart Chain (BEP20)	0.9993	—	≈ $0.0024	fast
Avalanche C-Chain	0.9993	—	≈ < $0.0001	fast
NEAR	0.9993	—	—	—
Optimism	0.9993	—	≈ $0.00016	fast
XLM	0.9993	—	—	—

USDC network fees

How the USDT Polygon → 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 Polygon in Polygon 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.

Swap USDT Polygon for USDC Arbitrum

Check this before sending USDT Polygon

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.

Polygon PoS against Arbitrum One

	Polygon PoS	Arbitrum One
Network type	Sidechain with checkpoints in Ethereum	L2, optimistic rollup
Fees are paid in	POL	ETH
Fee level	≈ $0.0018	≈ $0.0033
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)

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 Polygon PoS; 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 Polygon PoS → Arbitrum One: all directions The Arbitrum One network

Where the USDT Polygon to USDC Arbitrum rate has been

WeekMonthQuarterYear

high 0.999993 USDC Arbitrumlow 0.999555 USDC Arbitrum

Sep 11, 2026 06:32Sep 18, 2026 06:32

high 1.0002 USDC Arbitrumlow 0.999642 USDC Arbitrum

Aug 19, 2026 03:00Sep 18, 2026 03:00

high 1.0002 USDC Arbitrumlow 0.999327 USDC Arbitrum

Jun 20, 2026 03:00Sep 18, 2026 03:00

high 1.0017 USDC Arbitrumlow 0.996801 USDC Arbitrum

Sep 19, 2025 03:00Sep 18, 2026 03:00

24 hours: 0%
Week: 0%
Weekly high: 0.999993 USDC Arbitrum
Weekly low: 0.999555 USDC Arbitrum
Spread: 0.04%

Market data from CoinGecko as of Sep 18, 2026 05:24; the exchange rate is calculated separately and differs. Where these numbers come from

How far USDT Polygon/USDC Arbitrum travelled, by period

Period	High	Low	Middle	Net move
24 hours	0.999681	0.999555	0.999623	0%
Week	0.999993	0.999555	0.999816	0%
Month	1.0002	0.999642	0.999917	0%
Quarter	1.0002	0.999327	0.999707	−0.01%

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

Daily USDT Polygon → USDC Arbitrum rate

Day	Close	Against the day before
Sep 18, 2026	0.999642 USDC Arbitrum	0%
Sep 17, 2026	0.999675 USDC Arbitrum	0%
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%

Daily RubyCash rate: USDT Polygon → USDC Arbitrum

Date	RubyCash rate	Market rate
Sep 18, 2026	0.9993 USDC Arbitrum	0.999613
Sep 17, 2026	0.999201 USDC Arbitrum	0.999663
Sep 16, 2026	0.9995 USDC Arbitrum	0.999666

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 USDT and USDC

Tether USDT

Price: $0.99918
24 hours: −0.01%
Week: −0.1%
Market cap: $183.29 B
24-hour turnover: $49.51 B
Rank by cap: #3
In circulation: 183.44 B USDT
Record price: $1.32

USD Coin USDC

Price: $0.999567
24 hours: −0.01%
Week: 0%
Market cap: $73.87 B
24-hour turnover: $15.16 B
Rank by cap: #6
In circulation: 73.9 B USDC
Record price: $1.04

Source: CoinGecko, Sep 18, 2026 05:24.

Tether against USD Coin

	Tether (USDT)	USD Coin (USDC)
Ticker	USDT	USDC
Type	token	token
Network	Polygon	Arbitrum One
Fees are paid in	POL	ETH
Launched	2014	2018
Built by	Tether Limited	Circle
Supply cap	no cap	no cap
In circulation	183.44 B USDT	73.9 B USDC
Market cap	$183.29 B	$73.87 B
Rank by cap	#3	#6

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

Common questions: USDT Polygon → USDC Arbitrum

What rate does USDT Polygon to USDC Arbitrum run at?

As of Sep 18, 2026 06:28 it is 1 USDT Polygon = 0.9993 USDC Arbitrum. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.998868.

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 Polygon, and that one goes to the blockchain, not to us.

How long does USDT Polygon to USDC Arbitrum take?

The clock starts with confirmations: the order goes into work once Polygon confirms your transfer. After that it comes down to how busy the network is. A block in Polygon 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 Polygon, USDC SOL, 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 Polygon to USDC Arbitrum rate do this month?

The month came in at a move of 0%. Low 0.999642, high 1.0002, middle 0.999917 USDC Arbitrum per USDT Polygon.

Can I go back, USDC Arbitrum to USDT Polygon?

Yes, the reverse direction is open: 1 USDC Arbitrum = 1.0009 USDT Polygon. The link sits right under the calculator.