Synthetix (SNX) → Tether (USDT Optimism)
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 SNX → USDT Optimism
1 SNX = 0.255997 USDT Optimism
1 USDT Optimism = 3.9063 SNX
Rate as of Sep 30, 2026 16:50
- Orders from
- 394.7843 SNX ≈ $101.05
- Payout network
- Optimism
- 24 hours
- +1.3%
Current maths: 0.255997 USDT Optimism for every SNX, and 3.9063 SNX per USDT Optimism in reverse. Over 24 hours SNX/USDT Optimism came in at plus 1.3%. Over the week, minus 3.27%.
The weekly range ran from 0.23024 to 0.269836 USDT Optimism, a spread of 17.2%. One order takes from 394.7843 to 39,100,000 SNX. In dollars that is roughly $101.05.
The robot sends the payout in the Optimism network, so the address has to belong to that network — a transfer to another one will not arrive. Market capitalisation puts Synthetix at No. 227 ($148.62 M) and Tether at No. 3 ($183.8 B). Over 90 days the daily moves of SNX and USDT correlate at -0.01 (they travel apart).
Which network USDT arrives in
The same USDT goes out in several networks. Each has its own rate and its own floor, and the fee is charged by the network itself.
| Network | Per 1 SNX | From | Network fee | Speed |
|---|---|---|---|---|
| Ethereum (ERC20) | 0.255997 | 394.7843 SNX | ≈ $0.039 | medium |
| TRON (TRC20) | 0.255997 | 394.7843 SNX | ≈ $2.3 | fast |
| BNB Smart Chain (BEP20) | 0.255997 | 394.7843 SNX | ≈ $0.0025 | fast |
| Solana | 0.255997 | 394.7843 SNX | ≈ $0.0006 | fast |
| Arbitrum One | 0.255997 | 394.7843 SNX | ≈ $0.0036 | fast |
| Avalanche C-Chain | 0.255997 | 394.7843 SNX | ≈ $0.0036 | fast |
| NEAR | 0.255997 | 394.7843 SNX | — | — |
| Optimism open | 0.255997 | 394.7843 SNX | ≈ $0.00019 | fast |
SNX → USDT: all networks side by side Network charges for USDT
Rate and amounts for SNX → USDT Optimism
| SNX | USDT Optimism |
|---|---|
| 500 | 127.9987 |
| 2,000 | 511.9949 |
| 5,000 | 1,279.99 |
| 20,000 | 5,119.95 |
| 50,000 | 12,799.87 |
| 200,000 | 51,199.49 |
| USDT Optimism | SNX |
|---|---|
| 200 | 781.2578 |
| 1,000 | 3,906.29 |
| 2,000 | 7,812.58 |
| 10,000 | 39,062.89 |
| 20,000 | 78,125.78 |
| 100,000 | 390,628.91 |
How the SNX → USDT Optimism exchange runs
- Work out the amount in the calculator — orders start at 394.7843 SNX.
- Give a USDT address on Optimism and a contact for the order.
- Send SNX on Synthetix, exactly the amount the order shows.
- Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends Tether to your address. The order page shows the status.
Check this before sending SNX
- The address network is Optimism. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 394.7843 SNX.
- 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 SNX to USDT Optimism rate has moved
high 0.269836 USDT Optimismlow 0.23024 USDT Optimism
Sep 23, 2026 16:51Sep 30, 2026 16:51
high 0.269236 USDT Optimismlow 0.198719 USDT Optimism
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 0.269236 USDT Optimismlow 0.191738 USDT Optimism
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 2.2893 USDT Optimismlow 0.191738 USDT Optimism
Oct 1, 2025 05:00Sep 30, 2026 05:00
- 24 hours
- +1.3%
- Week
- −3.27%
- Weekly high
- 0.269836 USDT Optimism
- Weekly low
- 0.23024 USDT Optimism
- Spread
- 17.2%
Market data from CoinGecko as of Sep 30, 2026 16:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted
The SNX/USDT Optimism spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 0.261457 | 0.252408 | 0.255497 | +1.3% |
| Week | 0.269836 | 0.23024 | 0.253057 | −3.27% |
| Month | 0.269236 | 0.198719 | 0.224679 | +25.95% |
| Quarter | 0.269236 | 0.191738 | 0.220468 | +19.97% |
Figures are in USDT Optimism per unit of the currency you send, taken from market data.
Daily SNX → USDT Optimism rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 30, 2026 | 0.256056 USDT Optimism | +3.87% |
| Sep 29, 2026 | 0.246516 USDT Optimism | −8.44% |
| Sep 28, 2026 | 0.269236 USDT Optimism | +2.66% |
| Sep 27, 2026 | 0.262249 USDT Optimism | +0.45% |
| Sep 26, 2026 | 0.261067 USDT Optimism | +3% |
| Sep 25, 2026 | 0.253471 USDT Optimism | +9.5% |
| Sep 24, 2026 | 0.231475 USDT Optimism | −6% |
Market data: SNX and USDT
Synthetix SNX- Price
- $0.255963
- 24 hours
- +1.28%
- Week
- −2.02%
- Market cap
- $148.62 M
- 24-hour turnover
- $9.92 M
- Rank by cap
- #227
- In circulation
- 580.98 M SNX
- All-time high
- $28.53
Tether USDT- Price
- $0.999598
- 24 hours
- −0.01%
- Week
- −0.02%
- Market cap
- $183.8 B
- 24-hour turnover
- $56.53 B
- Rank by cap
- #3
- In circulation
- 183.87 B USDT
- All-time high
- $1.32
Source: CoinGecko, Sep 30, 2026 16:27.
Synthetix and Tether: how they differ
| Synthetix (SNX) | Tether (USDT) | |
|---|---|---|
| Ticker | SNX | USDT |
| In circulation | 580.98 M SNX | 183.87 B USDT |
| Market cap | $148.62 M | $183.8 B |
| Rank by cap | #227 | #3 |
| Type | — | token |
| Network | — | Optimism |
| Fees are paid in | — | ETH |
| Launched | — | 2014 |
| Built by | — | Tether Limited |
| Supply cap | — | no cap |
Daily moves of SNX and USDT over the quarter link at -0.01 (they travel apart).
Why people take the SNX → USDT Optimism route
- Stepping out of the swingsSNX moved +25.93% over the past month. USDT tracks the dollar, so after the swap the amount stops following SNX.
- It works both waysThe USDT Optimism → SNX direction is open as well — going back into SNX takes the same route and the same automation.
Common questions: SNX → USDT Optimism
What rate does SNX to USDT Optimism run at?
As of Sep 30, 2026 16:50 it is 1 SNX = 0.255997 USDT Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.255895.
What amounts does SNX → USDT Optimism accept?
From 394.7843 to 39,100,000 SNX per order. The floor is roughly $101.05.
Why can I not swap less than 394.7843 SNX?
The network fee and the handling do not depend on the amount. On a transfer below 394.7843 SNX 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 SNX, and the blockchain takes that one.
How long does swapping SNX for USDT Optimism take?
The clock starts with confirmations: as soon as Synthetix 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 USDT Optimism arrive in?
The payout goes out on Optimism. Check that the receiving wallet supports that network.
Which network is cheaper for receiving USDT?
Usually USDT BEP20, USDT SOL, USDT Arbitrum, USDT AVAX C, USDT Optimism works out cheaper. Still, the network is picked by what the recipient accepts, not by the fee.
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 SNX to USDT Optimism rate do over the month?
Over the month, plus 25.95%: a low of 0.198719, a high of 0.269236, an average of 0.224679 USDT Optimism per 1 SNX.
Can I swap back, USDT Optimism for SNX?
Yes, the reverse is open too: 1 USDT Optimism = 3.9062 SNX. The link to switch sits under the calculator.
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