Synthetix (SNX) → USD Coin (USDC 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 → USDC Optimism 1 SNX = 0.255921 USDC Optimism 1 USDC Optimism = 3.9075 SNX

Rate as of Sep 30, 2026 10:30

Orders from: 394.7843 SNX ≈ $100.95
Payout network: Optimism
24 hours: +5.23%

You send

SNX

You get 1,279.6

USDC Optimism

Create the order

Rate: 1 SNX = 0.255921 USDC Optimism
From: 394.7843 SNX
Up to: 39,100,000 SNX

Preliminary figure: the final amount is locked in the order.

The direction is holding at 0.255921 USDC Optimism per 1 SNX (3.9075 SNX per 1 USDC Optimism). Over 24 hours SNX/USDC Optimism came in at plus 5.23%. Over the week, minus 0.21%.

The weekly range ran from 0.230239 to 0.269815 USDC Optimism, a spread of 17.19%. One order takes from 394.7843 to 39,100,000 SNX. In dollars that is roughly $100.95.

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. 226 ($148.56 M) and USD Coin at No. 6 ($74.37 B). Over 90 days the daily moves of SNX and USDC correlate at 0.03 (they travel apart).

Which network USDC arrives in

The same USDC 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)	0.255921	394.7843 SNX	≈ $0.015	medium
Solana	0.255921	394.7843 SNX	≈ $0.00059	fast
Arbitrum One	0.255921	394.7843 SNX	≈ $0.0035	fast
BASE	0.255921	394.7843 SNX	—	—
BNB Smart Chain (BEP20)	0.255921	394.7843 SNX	≈ $0.0025	fast
Avalanche C-Chain	0.255921	394.7843 SNX	≈ $0.0038	fast
NEAR	0.255921	394.7843 SNX	—	—
Optimism open	0.255921	394.7843 SNX	≈ $0.00018	fast
Polygon	0.255921	394.7843 SNX	≈ $0.002	fast
XLM	0.255921	394.7843 SNX	—	—

SNX → USDC: all networks side by side Network charges for USDC

Rate and amounts for SNX → USDC Optimism

Send SNX — receive USDC OptimismNeed USDC Optimism — send this much SNX

SNX	USDC Optimism
500	127.9603
2,000	511.8413
5,000	1,279.6
20,000	5,118.41
50,000	12,796.03
200,000	51,184.13

USDC Optimism	SNX
200	781.4922
1,000	3,907.46
2,000	7,814.92
10,000	39,074.61
20,000	78,149.22
100,000	390,746.1

How the SNX → USDC Optimism exchange runs

Work out the amount in the calculator — orders start at 394.7843 SNX.
Give a USDC 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 USD Coin to your address. The order page shows the status.

Swap SNX for USDC Optimism

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 USDC Optimism rate has moved

WeekMonthQuarterYear

high 0.269815 USDC Optimismlow 0.230239 USDC Optimism

Sep 23, 2026 10:35Sep 30, 2026 10:35

high 0.269217 USDC Optimismlow 0.198664 USDC Optimism

Aug 30, 2026 05:00Sep 29, 2026 05:00

high 0.269217 USDC Optimismlow 0.191671 USDC Optimism

Jul 1, 2026 05:00Sep 29, 2026 05:00

high 2.2919 USDC Optimismlow 0.191671 USDC Optimism

Oct 1, 2025 05:00Sep 29, 2026 05:00

24 hours: +5.23%
Week: −0.21%
Weekly high: 0.269815 USDC Optimism
Weekly low: 0.230239 USDC Optimism
Spread: 17.19%

Market data from CoinGecko as of Sep 30, 2026 10:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted

The SNX/USDC Optimism spread by period

Period	High	Low	Middle	Period result
24 hours	0.261409	0.241874	0.253034	+5.23%
Week	0.269815	0.230239	0.253044	−0.21%
Month	0.269217	0.198664	0.223408	+21.69%
Quarter	0.269217	0.191671	0.220026	+19.76%

Figures are in USDC Optimism per unit of the currency you send, taken from market data.

Daily SNX → USDC Optimism rate

Day	Close	Against the day before
Sep 29, 2026	0.254541 USDC Optimism	−5.45%
Sep 28, 2026	0.269217 USDC Optimism	+2.66%
Sep 27, 2026	0.262237 USDC Optimism	+0.46%
Sep 26, 2026	0.261048 USDC Optimism	+3%
Sep 25, 2026	0.253439 USDC Optimism	+9.49%
Sep 24, 2026	0.231469 USDC Optimism	−6%
Sep 23, 2026	0.246245 USDC Optimism	+2.72%

Market data: SNX and USDC

Synthetix SNX

Price: $0.255713
24 hours: +5.22%
Week: −0.49%
Market cap: $148.56 M
24-hour turnover: $10.92 M
Rank by cap: #226
In circulation: 580.98 M SNX
All-time high: $28.53

USD Coin USDC

Price: $0.999839
24 hours: −0.01%
Week: 0%
Market cap: $74.37 B
24-hour turnover: $17.86 B
Rank by cap: #6
In circulation: 74.39 B USDC
All-time high: $1.04

Source: CoinGecko, Sep 30, 2026 10:27.

Synthetix and USD Coin: how they differ

	Synthetix (SNX)	USD Coin (USDC)
Ticker	SNX	USDC
In circulation	580.98 M SNX	74.39 B USDC
Market cap	$148.56 M	$74.37 B
Rank by cap	#226	#6
Type	—	token
Network	—	Optimism
Fees are paid in	—	ETH
Launched	—	2018
Built by	—	Circle
Supply cap	—	no cap

Daily moves of SNX and USDC over the quarter link at 0.03 (they travel apart).

Why people take the SNX → USDC Optimism route

Stepping out of the swingsSNX moved +21.68% over the past month. USDC tracks the dollar, so after the swap the amount stops following SNX.
It works both waysThe USDC Optimism → SNX direction is open as well — going back into SNX takes the same route and the same automation.

Common questions: SNX → USDC Optimism

What rate does SNX to USDC Optimism run at?

As of Sep 30, 2026 10:30 it is 1 SNX = 0.255921 USDC Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $0.255879.

What amounts does SNX → USDC Optimism accept?

From 394.7843 to 39,100,000 SNX per order. The floor is roughly $100.95.

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 USDC 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 USDC Optimism arrive in?

The payout goes out on Optimism. Check that the receiving wallet supports that network.

Which network is cheaper for receiving USDC?

Usually USDC SOL, USDC Arbitrum, USDC BEP20, USDC AVAX C, USDC Optimism, USDC Polygon 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 USDC Optimism rate do over the month?

Over the month, plus 21.69%: a low of 0.198664, a high of 0.269217, an average of 0.223408 USDC Optimism per 1 SNX.

Can I swap back, USDC Optimism for SNX?

Yes, the reverse is open too: 1 USDC Optimism = 3.9074 SNX. The link to switch sits under the calculator.