Tether (USDT Optimism) to DAI: Rate, Chart and Comparison

Live Tether to Dai 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, 12:29

Minimum: 200 USDT Optimism ≈ $199.83
Receiving network: Dai
24h rate change: −0.01%

You send

USDT Optimism

You get 2,000

DAI

Go to exchange

Rate: 1 USDT Optimism = 1 DAI
Minimum: 200 USDT Optimism
Maximum: 10,000,000 USDT Optimism

The amount you get is estimated at the current rate.

Right now Crystal-Trade gives 1 DAI for 1 USDT Optimism, and 1 DAI equals 1 USDT Optimism. According to market data, the USDT Optimism to DAI rate fell by 0.01% over the last 24 hours. Over the week it fell by 0.03%.

Over the last 7 days the rate moved between 0.999223 and 1.0001 DAI — a range of 0.09%. You can exchange from 200 to 10,000,000 USDT Optimism. That is roughly $199.83 or more.

By market cap, Tether ranks #3 ($183.29 B) and Dai ranks #22 ($4.57 B). The correlation of daily USDT and DAI price changes over the last 90 days is -0.02 (weak).

Why exchange USDT Optimism to DAI

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

How much is 1 USDT Optimism in DAI today

1 USDT Optimism = 1 DAI

1 DAI = 1 USDT Optimism

How much DAI you get for USDT Optimism

USDT Optimism	DAI
200	200
1,000	1,000
2,000	2,000
10,000	10,000
20,000	20,000
100,000	100,000

How much USDT Optimism you need to get DAI

DAI	USDT Optimism
200	200
1,000	1,000
2,000	2,000
10,000	10,000
20,000	20,000
100,000	100,000

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	≈ $0.00017	≈ $0.032
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	DAI 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

USDT Optimism to DAI rate chart

7 days30 days90 days1 year

high 1.0001 DAIlow 0.999223 DAI

Sep 10, 2026, 12:31Sep 17, 2026, 12:31

high 1.0005 DAIlow 0.999143 DAI

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

high 1.0005 DAIlow 0.998712 DAI

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

high 1.009 DAIlow 0.998079 DAI

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

24 hours: −0.01%
7 days: −0.03%
7-day high: 1.0001 DAI
7-day low: 0.999223 DAI
Range: 0.09%

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

USDT Optimism/DAI volatility and changes

Period	High	Low	Average	Change
24 hours	0.999549	0.999223	0.999315	−0.01%
7 days	1.0001	0.999223	0.999728	−0.03%
30 days	1.0005	0.999143	0.999878	+0.01%
90 days	1.0005	0.998712	0.999475	−0.01%

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

USDT Optimism to DAI rate over the last 7 days

Date	Daily close	Daily change
Sep 16, 2026	0.999335 DAI	−0.06%
Sep 15, 2026	0.999935 DAI	+0.01%
Sep 14, 2026	0.999844 DAI	−0.02%
Sep 13, 2026	1 DAI	+0.01%
Sep 12, 2026	0.999957 DAI	+0.01%
Sep 11, 2026	0.999871 DAI	0%
Sep 10, 2026	0.999892 DAI	−0.01%

USDT and DAI market data

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

Dai DAI

Price: $0.999987
24h change: −0.01%
7d change: 0%
Market cap: $4.57 B
24h volume: $318.66 M
Market cap rank: #22
Circulating supply: 4.58 B DAI
All-time high: $1.22

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

Tether vs Dai

	Tether (USDT)	Dai (DAI)
Ticker	USDT	DAI
Type	token	token
Network	Optimism	—
Network fee paid in	ETH	—
Launched	2014	2017
Created by	Tether Limited	MakerDAO
Max supply	no cap	no cap
Circulating supply	183.44 B USDT	4.58 B DAI
Market cap	$183.29 B	$4.57 B
Market cap rank	#3	#22

90-day correlation of daily USDT and DAI price changes: -0.02 — weak.

What to know about Tether and Dai

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.

Sending and receiving USDT

The key choice is the network. USDT on TRON is popular for its low fees and speed, ERC20 is supported almost everywhere but costs more in gas, while Solana, TON and BEP20 are cheap alternatives. The recipient address must belong to the same network you send on, and you need the network's native coin (TRX, ETH, BNB…) to pay the fee from your own wallet.

Dai

Dai (DAI) is a decentralized dollar stablecoin created by the Maker protocol (MakerDAO) in 2017 and now part of the Sky ecosystem. Unlike USDT or USDC, DAI is not issued against bank deposits: it is created by users who lock crypto collateral in smart contracts.

Risks and things to know

DAI depends on the value of its collateral and on the correctness of smart contracts. Governance decisions can change parameters of the system.

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.

How to exchange Tether to Dai

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

Exchange USDT Optimism to DAI

What to check before exchanging USDT Optimism to DAI

The recipient address must be on the Dai network: funds sent on another network may be lost.
The amount sent must be at least 200 USDT 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 DAI 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.

USDT Optimism to DAI exchange FAQ

How much is 1 USDT Optimism in DAI today?

As of Sep 17, 2026, 12:29, the exchange rate is 1 USDT Optimism = 1 DAI. It updates automatically; the calculator always shows the latest value. At market prices that is about $0.999987.

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

The minimum is 200 USDT Optimism and the maximum is 10,000,000 USDT Optimism. The minimum is roughly $199.83.

Why is there a minimum amount for USDT Optimism to DAI?

The minimum (200 USDT 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 USDT Optimism to DAI?

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

How long does a USDT Optimism to DAI exchange take?

The order is processed once the USDT 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 DAI or a wrapped token?

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

Do I need ETH to receive DAI?

Not to receive. You will need ETH later to send DAI 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 DAI after the order is processed, without that wait.

Which network will I receive DAI on?

Dai is sent on the Dai network. Provide a DAI wallet address.

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 USDT Optimism to DAI rate changed over the last month?

Over 30 days the rate rose by 0.01%: low 0.999143, high 1.0005, average 0.999878 DAI per 1 USDT Optimism.

Do I need to register to exchange USDT Optimism to DAI?

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

Can I exchange DAI back to USDT Optimism?

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