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 Sep 17, 2026 00:58
- Payout network
- Optimism
- 24 hours
- −0.76%
You get
USDT Optimism
Start the order
USDT Optimism
The figure is indicative; the exact amount is locked in the order.
The direction runs at 0.592766 USDT Optimism per ETHFI, or 1.687 ETHFI per USDT Optimism. Market over 24 hours: ETHFI against USDT Optimism minus 0.76%. The week added minus 3.7%.
The weekly corridor ran from 0.581946 to 0.759376 USDT Optimism, a spread of 30.49%.
The payout leaves in the Optimism network, so the receiving address has to belong to that network. By market cap Ether.fi sits 96th ($566.74 M) and Tether 3th ($183.33 B).
Who takes the ETHFI → USDT Optimism route
- Sitting out the swingsUSDT tracks the dollar: after the swap the value of your funds 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 = 0.592766 USDT Optimism
1 USDT Optimism = 1.687 ETHFI
Send ETHFI — receive USDT Optimism
| ETHFI | USDT Optimism |
|---|---|
| 20 | 11.8553 |
| 100 | 59.2766 |
| 500 | 296.3831 |
| 5,000 | 2,963.83 |
| 20,000 | 11,855.32 |
| 100,000 | 59,276.61 |
Need USDT Optimism — send this much ETHFI
| USDT Optimism | ETHFI |
|---|---|
| 20 | 33.7401 |
| 100 | 168.7006 |
| 500 | 843.503 |
| 5,000 | 8,435.03 |
| 20,000 | 33,740.12 |
| 100,000 | 168,700.59 |
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 | 0.592766 | — | — | — |
| Ethereum (ERC20) | 0.592766 | 335.0645 ETHFI | ≈ $0.011 | medium |
| TRON (TRC20) | 0.592766 | 335.0645 ETHFI | ≈ $2.3 | fast |
| BNB Smart Chain (BEP20) | 0.592766 | 335.0645 ETHFI | ≈ $0.0023 | fast |
| Solana | 0.592766 | 335.0645 ETHFI | ≈ $0.00049 | fast |
| Polygon | 0.592766 | 335.0645 ETHFI | ≈ $0.0017 | fast |
| Arbitrum One | 0.592766 | 335.0645 ETHFI | ≈ $0.0032 | fast |
| TON | 0.592766 | 335.0645 ETHFI | low | fast |
| Avalanche C-Chain | 0.592766 | — | ≈ < $0.0001 | fast |
| NEAR | 0.592766 | — | — | — |
| Optimism open now | 0.592766 | — | ≈ $0.00016 | fast |
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.
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
high 0.759376 USDT Optimismlow 0.581946 USDT Optimism
Sep 10, 2026 01:00Sep 17, 2026 01:00
- 24 hours
- −0.76%
- Week
- −3.7%
- Weekly high
- 0.759376 USDT Optimism
- Weekly low
- 0.581946 USDT Optimism
- Spread
- 30.49%
Market data from CoinGecko as of Sep 17, 2026 00:54; 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 | 0.596283 | 0.581946 | 0.588295 | −0.76% |
| Week | 0.759376 | 0.581946 | 0.650444 | −3.7% |
Figures are in USDT Optimism per unit sent, from market data.
The numbers on ETHFI and USDT
Ether.fi ETHFI- Price
- $0.58712
- 24 hours
- −0.77%
- Week
- −2.5%
- Market cap
- $566.74 M
- 24-hour turnover
- $32 M
- Rank by cap
- #96
- In circulation
- 965.35 M ETHFI
- Record price
- $8.53
Tether USDT- Price
- $0.99939
- 24 hours
- −0.01%
- Week
- −0.1%
- Market cap
- $183.33 B
- 24-hour turnover
- $59.59 B
- Rank by cap
- #3
- In circulation
- 183.44 B USDT
- Record price
- $1.32
Source: CoinGecko, Sep 17, 2026 00:54.
Ether.fi against Tether
| Ether.fi (ETHFI) | Tether (USDT) | |
|---|---|---|
| Ticker | ETHFI | USDT |
| In circulation | 965.35 M ETHFI | 183.44 B USDT |
| Market cap | $566.74 M | $183.33 B |
| Rank by cap | #96 | #3 |
| Type | — | token |
| Network | — | Optimism |
| Fees are paid in | — | ETH |
| Launched | — | 2014 |
| Built by | — | Tether Limited |
| Supply cap | — | no cap |
Common questions: ETHFI → USDT Optimism
What rate does ETHFI to USDT Optimism run at?
As of Sep 17, 2026 00:58 it is 1 ETHFI = 0.592766 USDT Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.592405.
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.
Can I go back, USDT Optimism to ETHFI?
Yes, the reverse direction is open: 1 USDT Optimism = 1.7006 ETHFI. The link sits right under the calculator.
Worth reading
Where else this can go
The other way round
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