Swap Ether.fi (ETHFI) for Tether (USDT Optimism)

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 Nov 1, 2026 03:19

Payout network: Optimism
24 hours: +0.08%

You send

ETHFI

You get 0.626753

USDT Optimism

Start the order

Rate: 1 ETHFI = 0.626753 USDT Optimism
Up to: 16,000,000 ETHFI

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

The direction runs at 0.626753 USDT Optimism per ETHFI, or 1.5955 ETHFI per USDT Optimism. Market over 24 hours: ETHFI against USDT Optimism plus 0.08%. The week added plus 2.25%.

The weekly corridor ran from 0.579834 to 0.682017 USDT Optimism, a spread of 17.62%.

The payout leaves in the Optimism network, so the receiving address has to belong to that network. By market cap Ether.fi sits 93th ($622.72 M) and Tether 3th ($180.04 B). Daily moves of ETHFI and USDT over 90 days line up at 0.09 (they travel apart).

Who takes the ETHFI → USDT Optimism route

Sitting out the swingsETHFI moved −19.4% over the past month. USDT tracks the dollar, so after the swap the value stops following ETHFI.
A road both waysThe USDT Optimism → ETHFI direction is open too, so going back into ETHFI takes the same route.

ETHFI → USDT Optimism rate and amounts

1 ETHFI = 0.626753 USDT Optimism

1 USDT Optimism = 1.5955 ETHFI

Send ETHFI — receive USDT Optimism

ETHFI	USDT Optimism
20	12.5351
100	62.6753
500	313.3767
5,000	3,133.77
20,000	12,535.07
100,000	62,675.34

Need USDT Optimism — send this much ETHFI

USDT Optimism	ETHFI
20	31.9105
100	159.5524
500	797.7619
5,000	7,977.62
20,000	31,910.48
100,000	159,552.38

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.

Network	Per ETHFI	From	Network fee	Speed
OMNI	0.626753	—	—	—
Ethereum (ERC20)	0.626753	335.0645 ETHFI	≈ $0.0058	medium
TRON (TRC20)	0.626753	335.0645 ETHFI	≈ $2.1	fast
BNB Smart Chain (BEP20)	0.626753	335.0645 ETHFI	≈ $0.0023	fast
Solana	0.626753	335.0645 ETHFI	≈ $0.00048	fast
Polygon	0.626753	335.0645 ETHFI	≈ $0.0017	fast
Arbitrum One	0.626753	335.0645 ETHFI	≈ $0.0029	fast
TON	0.626753	335.0645 ETHFI	low	fast
Avalanche C-Chain	0.626753	—	≈ $0.0014	fast
NEAR	0.626753	—	—	—
Optimism open now	0.626753	—	≈ $0.00015	fast

ETHFI → USDT: compare all networks USDT network fees

How the ETHFI → USDT Optimism order runs

Work out the amount in the calculator and press the exchange button.
Enter a USDT address in Optimism and a way to reach you.
Send ETHFI in Ether.fi for exactly the amount stated in the order.
Once the network confirms your transfer, Tether leaves for your address. The order page tracks every step.

Swap ETHFI for USDT Optimism

Check this before sending ETHFI

The address network is Optimism. Sending through another network usually means losing the transfer.
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 ETHFI to USDT Optimism rate has been

WeekMonthQuarterYear

high 0.682017 USDT Optimismlow 0.579834 USDT Optimism

Oct 25, 2026 03:20Nov 1, 2026 03:20

high 0.784925 USDT Optimismlow 0.606717 USDT Optimism

Oct 1, 2026 03:00Oct 31, 2026 03:00

high 0.784925 USDT Optimismlow 0.356201 USDT Optimism

Aug 2, 2026 03:00Oct 31, 2026 03:00

high 1.0166 USDT Optimismlow 0.286526 USDT Optimism

Nov 1, 2025 03:00Oct 31, 2026 03:00

24 hours: +0.08%
Week: +2.25%
Weekly high: 0.682017 USDT Optimism
Weekly low: 0.579834 USDT Optimism
Spread: 17.62%

Market data from CoinGecko as of Nov 1, 2026 02:54; the exchange rate is calculated separately and differs. Where these numbers come from

How far ETHFI/USDT Optimism travelled, by period

Period	High	Low	Middle	Net move
24 hours	0.642277	0.612794	0.623898	+0.08%
Week	0.682017	0.579834	0.636097	+2.25%
Month	0.784925	0.606717	0.686907	−19.39%
Quarter	0.784925	0.356201	0.604982	+59.73%

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

Daily ETHFI → USDT Optimism rate

Day	Close	Against the day before
Oct 31, 2026	0.632733 USDT Optimism	+4.29%
Oct 30, 2026	0.606717 USDT Optimism	−11.24%
Oct 29, 2026	0.683527 USDT Optimism	+2.68%
Oct 28, 2026	0.665705 USDT Optimism	+1.97%
Oct 27, 2026	0.652825 USDT Optimism	+4.4%
Oct 26, 2026	0.625288 USDT Optimism	+0.82%
Oct 25, 2026	0.62018 USDT Optimism	−3.69%

Daily RubyCash rate: ETHFI → USDT Optimism

Date	RubyCash rate	Market rate
Nov 1, 2026	0.626753 USDT Optimism	0.623922
Oct 31, 2026	0.629569 USDT Optimism	0.629073
Oct 30, 2026	0.613681 USDT Optimism	0.596541
Oct 29, 2026	0.620117 USDT Optimism	0.617764
Oct 28, 2026	0.685477 USDT Optimism	0.681942
Oct 27, 2026	0.6715 USDT Optimism	0.669162
Oct 26, 2026	0.640529 USDT Optimism	0.643644
Oct 25, 2026	0.637714 USDT Optimism	0.619546
Oct 24, 2026	0.619413 USDT Optimism	0.617056
Oct 22, 2026	0.661344 USDT Optimism	0.662793
Oct 21, 2026	0.71333 USDT Optimism	0.723858
Oct 20, 2026	0.721676 USDT Optimism	0.716289
Oct 19, 2026	0.687186 USDT Optimism	0.669749
Oct 18, 2026	0.671902 USDT Optimism	0.663009

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 ETHFI and USDT

Ether.fi ETHFI

Price: $0.623631
24 hours: +0.11%
Week: +1.6%
Market cap: $622.72 M
24-hour turnover: $19.99 M
Rank by cap: #93
In circulation: 998.54 M ETHFI
Record price: $8.53

Tether USDT

Price: $0.999534
24 hours: +0.03%
Week: +0.04%
Market cap: $180.04 B
24-hour turnover: $26.61 B
Rank by cap: #3
In circulation: 180.12 B USDT
Record price: $1.32

Source: CoinGecko, Nov 1, 2026 02:54.

Ether.fi against Tether

	Ether.fi (ETHFI)	Tether (USDT)
Ticker	ETHFI	USDT
In circulation	998.54 M ETHFI	180.12 B USDT
Market cap	$622.72 M	$180.04 B
Rank by cap	#93	#3
Type	—	token
Network	—	Optimism
Fees are paid in	—	ETH
Launched	—	2014
Built by	—	Tether Limited
Supply cap	—	no cap

Daily moves of ETHFI and USDT over 90 days line up at 0.09 — they travel apart.

Common questions: ETHFI → USDT Optimism

What rate does ETHFI to USDT Optimism run at?

As of Nov 1, 2026 03:19 it is 1 ETHFI = 0.626753 USDT Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.626461.

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

How long does ETHFI to USDT Optimism take?

The clock starts with confirmations: the order goes into work once Ether.fi confirms your transfer. After that it comes down to how busy the network is.

Which network will USDT Optimism arrive in?

The payout leaves in Optimism. 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 ETHFI to USDT Optimism rate do this month?

The month came in at minus 19.39%. Low 0.606717, high 0.784925, middle 0.686907 USDT Optimism per ETHFI.

Can I go back, USDT Optimism to ETHFI?

Yes, the reverse direction is open: 1 USDT Optimism = 1.6084 ETHFI. The link sits right under the calculator.