Tether (USDT Optimism) → yearn.finance (YFI)
The order runs on autopilot: the rate is locked when you create it, and the payout leaves as soon as the network confirms your transfer. No manual approval, no working hours.
Rate and amounts for USDT Optimism → YFI
1 USDT Optimism = 0.000408857 YFI
1 YFI = 2,445.84 USDT Optimism
Rate as of Oct 1, 2026 00:40
- Orders from
- 100.67 USDT Optimism ≈ $100.63
- Payout network
- yearn.finance
- 24 hours
- −0.34%
Current maths: 0.000408857 YFI for every USDT Optimism, and 2,445.84 USDT Optimism per YFI in reverse. Over 24 hours USDT Optimism/YFI came in at minus 0.34%. Over the week, minus 6.82%.
The weekly range ran from 0.000398959 to 0.000439024 YFI, a spread of 10.04%. One order takes from 100.67 to 10,000,000 USDT Optimism. In dollars that is roughly $100.63.
Market capitalisation puts Tether at No. 3 ($183.8 B) and yearn.finance at No. 316 ($87.85 M). Over 90 days the daily moves of USDT and YFI correlate at 0.07 (they travel apart).
Rate and amounts for USDT Optimism → YFI
| USDT Optimism | YFI |
|---|---|
| 200 | 0.0817713 |
| 1,000 | 0.408857 |
| 2,000 | 0.817713 |
| 10,000 | 4.0886 |
| 20,000 | 8.1771 |
| 100,000 | 40.8857 |
| YFI | USDT Optimism |
|---|---|
| 0.05 | 122.2922 |
| 0.2 | 489.1689 |
| 0.5 | 1,222.92 |
| 2 | 4,891.69 |
| 5 | 12,229.22 |
| 20 | 48,916.89 |
How the USDT Optimism → YFI exchange runs
- Work out the amount in the calculator — orders start at 100.67 USDT Optimism.
- Give a YFI address on yearn.finance and a contact for the order.
- Send USDT Optimism on Optimism, exactly the amount the order shows.
- Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends yearn.finance to your address. The order page shows the status.
Check this before sending USDT Optimism
- The address network is yearn.finance. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 100.67 USDT Optimism.
- Copy the address in full, then check its first and last characters once it is pasted.
- Send exactly the amount stated in the order: the automation matches your payment against it, and any difference sends the order back for recalculation.
How the USDT Optimism to YFI rate has moved
high 0.000439024 YFIlow 0.000398959 YFI
Sep 24, 2026 00:41Oct 1, 2026 00:41
high 0.000489238 YFIlow 0.000401492 YFI
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 0.00057192 YFIlow 0.000370431 YFI
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 0.000615483 YFIlow 0.00017974 YFI
Oct 1, 2025 05:00Sep 30, 2026 05:00
- 24 hours
- −0.34%
- Week
- −6.82%
- Weekly high
- 0.000439024 YFI
- Weekly low
- 0.000398959 YFI
- Spread
- 10.04%
Market data from CoinGecko as of Oct 1, 2026 00:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted
The USDT Optimism/YFI spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 0.000417218 | 0.000401424 | 0.000410178 | −0.34% |
| Week | 0.000439024 | 0.000398959 | 0.000413005 | −6.82% |
| Month | 0.000489238 | 0.000401492 | 0.000442499 | −11.01% |
| Quarter | 0.00057192 | 0.000370431 | 0.000467426 | −29.8% |
Figures are in YFI per unit of the currency you send, taken from market data.
Daily USDT Optimism → YFI rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 30, 2026 | 0.000401492 YFI | −4.58% |
| Sep 29, 2026 | 0.000420762 YFI | +4.37% |
| Sep 28, 2026 | 0.000403134 YFI | +0.11% |
| Sep 27, 2026 | 0.000402686 YFI | −0.4% |
| Sep 26, 2026 | 0.000404314 YFI | −2.64% |
| Sep 25, 2026 | 0.000415256 YFI | −4.22% |
| Sep 24, 2026 | 0.000433563 YFI | +2.26% |
Market data: USDT and YFI
Tether USDT- Price
- $0.999615
- 24 hours
- −0.01%
- Week
- −0.01%
- Market cap
- $183.8 B
- 24-hour turnover
- $63.18 B
- Rank by cap
- #3
- In circulation
- 183.87 B USDT
- All-time high
- $1.32
yearn.finance YFI- Price
- $2,435.16
- 24 hours
- +0.33%
- Week
- +5.63%
- Market cap
- $87.85 M
- 24-hour turnover
- $5.65 M
- Rank by cap
- #316
- In circulation
- 36.08 K YFI
- All-time high
- $90,787.00
Source: CoinGecko, Oct 1, 2026 00:27.
Tether and yearn.finance: how they differ
| Tether (USDT) | yearn.finance (YFI) | |
|---|---|---|
| Ticker | USDT | YFI |
| Type | token | — |
| Network | Optimism | — |
| Fees are paid in | ETH | — |
| Launched | 2014 | — |
| Built by | Tether Limited | — |
| Supply cap | no cap | — |
| In circulation | 183.87 B USDT | 36.08 K YFI |
| Market cap | $183.8 B | $87.85 M |
| Rank by cap | #3 | #316 |
Daily moves of USDT and YFI over the quarter link at 0.07 (they travel apart).
Why people take the USDT Optimism → YFI route
- Entering YFI from dollarsUSDT goes into yearn.finance in one step, with no coin in between: over the last month YFI posted +12.34%.
- A DeFi protocol tokenyearn.finance belongs to decentralised finance: holders govern the protocol with it and pay for operations inside it.
- Different basketsDaily moves of USDT and YFI over 90 days link at 0.07 (they travel apart) — the weaker the link, the less a portfolio rests on one coin.
Common questions: USDT Optimism → YFI
What rate does USDT Optimism to YFI run at?
As of Oct 1, 2026 00:40 it is 1 USDT Optimism = 0.000408857 YFI. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.995632.
What amounts does USDT Optimism → YFI accept?
From 100.67 to 10,000,000 USDT Optimism per order. The floor is roughly $100.63.
Why can I not swap less than 100.67 USDT Optimism?
The network fee and the handling do not depend on the amount. On a transfer below 100.67 USDT Optimism they eat a noticeable share of it, and the swap stops making sense for either side.
Is anything charged on top of the rate?
No. The payout is already worked out at the rate in the calculator. Separately you pay only the network fee for sending USDT Optimism, and the blockchain takes that one.
How long does swapping USDT Optimism for YFI take?
The clock starts with confirmations: as soon as Optimism confirms your transfer, the order goes out for payout with no operator involved. After that the timing is set by how busy the network is — which is the difference between quick and instant.
Which network will YFI arrive in?
yearn.finance arrives in its own yearn.finance network — a plain YFI address is all you need.
What happens if the rate moves while I am paying?
Nothing: the rate is locked in the order and holds for as long as the order is alive. It is recalculated only if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.
What did the USDT Optimism to YFI rate do over the month?
Over the month, minus 11.01%: a low of 0.000401492, a high of 0.000489238, an average of 0.000442499 YFI per 1 USDT Optimism.
Can I swap back, YFI for USDT Optimism?
Yes, the reverse is open too: 1 YFI = 2,445.8 USDT Optimism. The link to switch sits under the calculator.
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