USD Coin (USDC Optimism) to Tether (USDT ERC20): Rate, Chart and Comparison

Live USD Coin to Tether rate, converter, price history, volatility and a side-by-side comparison of both coins. Ready to swap? Open the exchange form.

Rate updated: Sep 17, 2026, 12:14

Minimum: 200 USDC Optimism ≈ $199.91
Receiving network: Ethereum (ERC20)
24h rate change: +0.01%

You send

USDC Optimism

You get 2,001

USDT ERC20

Go to exchange

Rate: 1 USDC Optimism = 1.0005 USDT ERC20
Minimum: 200 USDC Optimism
Maximum: 10,000,000 USDC Optimism

The amount you get is estimated at the current rate.

The current USDC Optimism to USDT ERC20 exchange rate is 1.0005 USDT ERC20 per 1 USDC Optimism; the reverse rate is 1 USDT ERC20 = 0.9995 USDC Optimism. According to market data, the USDC Optimism to USDT ERC20 rate rose by 0.01% over the last 24 hours. Over the week it rose by 0.03%.

Over the last 7 days the rate moved between 1 and 1.0005 USDT ERC20 — a range of 0.05%. You can exchange from 200 to 10,000,000 USDC Optimism. That is roughly $199.91 or more.

USDT is sent to your address on the Ethereum (ERC20) network, so make sure you provide an address on that network. By market cap, USD Coin ranks #6 ($73.6 B) and Tether ranks #3 ($183.29 B). The correlation of daily USDC and USDT price changes over the last 90 days is 0.15 (weak).

Why exchange USDC Optimism to USDT ERC20

Easy to switch backThe USDT ERC20 → USDC Optimism direction is also available, so you can move back to USDC if needed.

How much is 1 USDC Optimism in USDT ERC20 today

1 USDC Optimism = 1.0005 USDT ERC20

1 USDT ERC20 = 0.9995 USDC Optimism

How much USDT ERC20 you get for USDC Optimism

USDC Optimism	USDT ERC20
200	200.1
1,000	1,000.5
2,000	2,001
10,000	10,005
20,000	20,010
100,000	100,050

How much USDC Optimism you need to get USDT ERC20

USDT ERC20	USDC Optimism
500	499.7501
1,000	999.5002
5,000	4,997.5
10,000	9,995
50,000	49,975.01
100,000	99,950.02

Which network to receive USDT on

USDT for USDC Optimism can be received on different networks: rates and minimums differ, and the network fee depends on the blockchain.

Network	Rate per 1 USDC Optimism	Minimum	Network fee	Speed
Ethereum (ERC20) this page	1.0005	200 USDC Optimism	≈ $0.021	moderate
TRON (TRC20)	1.0005	200 USDC Optimism	≈ $2.3	fast
BNB Smart Chain (BEP20)	1.0005	200 USDC Optimism	≈ $0.0024	fast
Solana	1.0005	200 USDC Optimism	≈ $0.0005	fast
Polygon	1.0005	200 USDC Optimism	≈ $0.0017	fast
Arbitrum One	1.0005	200 USDC Optimism	≈ $0.0032	fast
Optimism	1.0005	200 USDC Optimism	≈ $0.00016	fast
TON	1.0005	200 USDC Optimism	low	fast

USDT network fees now

OP Mainnet (Optimism) vs Ethereum: network comparison

	OP Mainnet (Optimism)	Ethereum
Network type	Layer 2 (optimistic rollup)	Layer 1
Fees are paid in	ETH	ETH
Fee level	≈ $0.00016	≈ $0.021
Speed	fast	moderate
Block time	~2 sec	~12 sec
Address format	0x…	0x…
Memo / tag	not needed	not needed
EVM-compatible addresses (0x…)	yes	yes
Withdrawal to Ethereum via the official bridge	~7 days (challenge period)	—

Fee and speed levels are relative and depend on network load.

Crystal-Trade or a classic bridge: what is the difference

	Crystal-Trade	Classic bridge
What you receive	USDT on Ethereum	The same stablecoin; switching between USDT and USDC needs a separate swap
Wallet connection and approvals	Not needed: you send coins to the order address	Needed: you connect a wallet and sign contract transactions
Coins for fees on Ethereum	Not needed to receive	Often needed to claim funds or move them after the bridge
Time	After the OP Mainnet (Optimism) confirmations; the status is shown on the order page	~7 days for withdrawals from OP Mainnet (Optimism) to Ethereum through the official bridge
Who holds the funds during the transfer	Crystal-Trade, for the duration of the order (with an AML check)	The bridge smart contract or its validators

Bridge OP Mainnet (Optimism) → Ethereum: all directions Ethereum bridge

USDC Optimism to USDT ERC20 rate chart

7 days30 days90 days1 year

high 1.0005 USDT ERC20low 1 USDT ERC20

Sep 10, 2026, 12:17Sep 17, 2026, 12:17

high 1.0004 USDT ERC20low 0.999785 USDT ERC20

Aug 17, 2026, 03:00Sep 16, 2026, 03:00

high 1.0007 USDT ERC20low 0.999785 USDT ERC20

Jun 18, 2026, 03:00Sep 16, 2026, 03:00

high 1.0032 USDT ERC20low 0.998284 USDT ERC20

Sep 17, 2025, 03:00Sep 16, 2026, 03:00

24 hours: +0.01%
7 days: +0.03%
7-day high: 1.0005 USDT ERC20
7-day low: 1 USDT ERC20
Range: 0.05%

CoinGecko market data as of Sep 17, 2026, 12:04. The exchange rate may differ from the market rate. How we calculate the data

USDC Optimism/USDT ERC20 volatility and changes

Period	High	Low	Average	Change
24 hours	1.0004	1.0003	1.0004	+0.01%
7 days	1.0005	1	1.0002	+0.03%
30 days	1.0004	0.999785	1.0001	+0.01%
90 days	1.0007	0.999785	1.0003	+0.02%

Values are in USDT ERC20 per 1 unit of the currency you send, based on market data.

USDC Optimism to USDT ERC20 rate over the last 7 days

Date	Daily close	Daily change
Sep 16, 2026	1.0004 USDT ERC20	+0.04%
Sep 15, 2026	1 USDT ERC20	−0.01%
Sep 14, 2026	1.0002 USDT ERC20	+0.01%
Sep 13, 2026	1.0001 USDT ERC20	0%
Sep 12, 2026	1 USDT ERC20	−0.02%
Sep 11, 2026	1.0002 USDT ERC20	0%
Sep 10, 2026	1.0001 USDT ERC20	0%

USDC and USDT market data

USD Coin USDC

Price: $0.99955
24h change: −0.01%
7d change: 0%
Market cap: $73.6 B
24h volume: $18.22 B
Market cap rank: #6
Circulating supply: 73.64 B USDC
All-time high: $1.04

Tether USDT

Price: $0.999125
24h change: −0.02%
7d change: −0.1%
Market cap: $183.29 B
24h volume: $58.96 B
Market cap rank: #3
Circulating supply: 183.44 B USDT
All-time high: $1.32

CoinGecko data as of Sep 17, 2026, 12:04.

USD Coin vs Tether

	USD Coin (USDC)	Tether (USDT)
Ticker	USDC	USDT
Type	token	token
Network	Optimism	Ethereum (ERC20)
Network fee paid in	ETH	ETH
Launched	2018	2014
Created by	Circle	Tether Limited
Max supply	no cap	no cap
Circulating supply	73.64 B USDC	183.44 B USDT
Market cap	$73.6 B	$183.29 B
Market cap rank	#6	#3

90-day correlation of daily USDC and USDT price changes: 0.15 — weak.

What to know about USD Coin and Tether

USD Coin (USDC)

USD Coin (USDC) is a dollar stablecoin issued by Circle since 2018. Each token is backed by reserves held in cash and short-term US Treasuries, and the reserve composition is regularly reported by the issuer.

Sending and receiving USDC

Send USDC only on the network the recipient supports: an Ethereum address and a Polygon address may look identical but the funds end up on different chains. Fees are paid in the native coin of the network (ETH, SOL, POL…).

Tether (USDT)

Tether (USDT) is the largest stablecoin: a token designed to stay at one US dollar. It was launched in 2014 by Tether Limited, which issues USDT against reserves that consist mostly of cash equivalents and short-term US Treasury bills.

Risks and things to know

A stablecoin depends on its issuer: Tether can freeze tokens on specific addresses at the request of authorities, and the peg relies on the reserves. Sending USDT to an address on a different network is one of the most common and costly mistakes.

Optimism network

Optimism is an Ethereum layer-2 network. Addresses use the Ethereum format and fees are paid in ETH at a fraction of mainnet cost.

Ethereum (ERC20) network

ERC20 is the token standard on Ethereum. It is supported by almost every wallet and exchange, but the fee (gas) is paid in ETH and grows when the network is busy.

How to exchange USD Coin to Tether

Enter the USDC Optimism amount in the calculator (minimum 200 USDC Optimism) and click “Go to exchange”.
Enter your USDT wallet address on the Ethereum (ERC20) network and your contact details.
Send exactly the specified amount of USDC Optimism on the Optimism network to the details shown in the order.
Once the transfer is confirmed, Tether is sent to your address. You can track the order on its status page.

Exchange USDC Optimism to USDT ERC20

What to check before exchanging USDC Optimism to USDT ERC20

The recipient address must be on the Ethereum (ERC20) network: funds sent on another network may be lost.
The amount sent must be at least 200 USDC Optimism.
Copy the whole address and check the first and last characters after pasting.
Addresses on Ethereum, Arbitrum, Optimism, BNB Smart Chain and Polygon look the same (0x…): make sure the wallet shows Ethereum as the network.
To move USDT on Ethereum later, you will need a little ETH on the same address.
Funds go through an AML check; high-risk transfers may be held until the check is complete.

USDC Optimism to USDT ERC20 exchange FAQ

How much is 1 USDC Optimism in USDT ERC20 today?

As of Sep 17, 2026, 12:14, the exchange rate is 1 USDC Optimism = 1.0005 USDT ERC20. It updates automatically; the calculator always shows the latest value. At market prices that is about $0.999625.

What are the minimum and maximum amounts for USDC Optimism to USDT ERC20?

The minimum is 200 USDC Optimism and the maximum is 10,000,000 USDC Optimism. The minimum is roughly $199.91.

Why is there a minimum amount for USDC Optimism to USDT ERC20?

The minimum (200 USDC Optimism) keeps network fees and order processing from eating a noticeable share of the exchange. Double-check the amount before sending.

Are there extra fees when exchanging USDC Optimism to USDT ERC20?

The amount you get is calculated at the exchange rate shown in the calculator. The network fee for sending USDC Optimism is paid by the sender and depends on the wallet and network load.

How long does a USDC Optimism to USDT ERC20 exchange take?

The order is processed once the USDC Optimism transfer gets the required number of confirmations on the Optimism network. Timing depends on network load. A new block on Optimism arrives roughly every 2 sec.

Will I receive native USDT or a wrapped token?

USDT ERC20 is the standard USDT token on Ethereum — the same one exchanges send when you withdraw to this network.

Do I need ETH to receive USDT ERC20?

Not to receive. You will need ETH later to send USDT from your Ethereum address.

How is this different from the official OP Mainnet (Optimism) bridge?

Withdrawals from OP Mainnet (Optimism) to Ethereum through the official bridge wait about 7 days — the challenge period of an optimistic rollup. Through Crystal-Trade you receive USDT ERC20 after the order is processed, without that wait.

Which network will I receive USDT ERC20 on?

USDT is sent on the Ethereum (ERC20) network. Make sure the recipient address supports this network.

Which network is cheapest to receive USDT?

The lowest network fees are usually on USDT BEP20, USDT SOL, USDT Polygon, USDT Arbitrum, USDT Optimism, USDT TON. Choose a network supported by the recipient’s wallet or exchange.

What happens if the rate changes during the exchange?

The final amount is set in the order when it is created. If the payment arrives after the order expires or in a different amount, it may be recalculated at the current rate, so send the exact amount without delay.

How has the USDC Optimism to USDT ERC20 rate changed over the last month?

Over 30 days the rate rose by 0.01%: low 0.999785, high 1.0004, average 1.0001 USDT ERC20 per 1 USDC Optimism.

Do I need to register to exchange USDC Optimism to USDT ERC20?

No, you only need to enter the receiving details and contact information in the order.

Can I exchange USDT ERC20 back to USDC Optimism?

Yes, the reverse direction is available: 1 USDT ERC20 = 0.9995 USDC Optimism. The link is below the calculator.