Swap Simon's Cat (CAT) for Ethereum (ETH 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 06:43
- Orders from
- 103,039,670.27 CAT ≈ $204.02
- Payout network
- Optimism
- 24 hours
- +0.12%
You get
ETH Optimism
Start the order
ETH Optimism
The figure is indicative; the exact amount is locked in the order.
One CAT buys 0.000000000818 ETH Optimism right now; the other way round, 1 ETH Optimism is 1,222,429,260.78 CAT. Market over 24 hours: CAT against ETH Optimism plus 0.12%. The week added minus 1.87%.
The weekly corridor ran from 0.000000000779 to 0.000000000855 ETH Optimism, a spread of 9.73%. A single order takes 103,039,670.27 to 5,050,000,000,000 CAT. In dollars that is roughly $204.02.
The payout leaves in the Optimism network, so the receiving address has to belong to that network. By market cap Simon's Cat sits 986th ($14.87 M) and Ethereum 2th ($296.81 B). Daily moves of CAT and ETH over 90 days line up at 0.42 (they travel alike).
Who takes the CAT → ETH Optimism route
- Fuel for OptimismWithout Ethereum nothing moves in Optimism — every transfer and every contract call is paid in it.
- Different basketsDaily moves of CAT and ETH over 90 days line up at 0.42 (they travel alike) — the looser the link, the less a portfolio depends on one coin.
- A road both waysThe ETH Optimism → CAT direction is open too, so going back into CAT takes the same route.
CAT → ETH Optimism rate and amounts
1 CAT = 0.000000000818 ETH Optimism
1 ETH Optimism = 1,222,429,260.78 CAT
Send CAT — receive ETH Optimism
| CAT | ETH Optimism | ≈ USD |
|---|---|---|
| 200,000,000 | 0.163609 | $396.00 |
| 500,000,000 | 0.409022 | $990.00 |
| 2,000,000,000 | 1.6361 | $3,960.00 |
| 5,000,000,000 | 4.0902 | $9,900.00 |
| 20,000,000,000 | 16.3609 | $39,600.00 |
| 50,000,000,000 | 40.9022 | $99,000.00 |
Need ETH Optimism — send this much CAT
| ETH Optimism | CAT | ≈ USD |
|---|---|---|
| 0.1 | 122,242,926.08 | $242.04 |
| 0.2 | 244,485,852.16 | $484.08 |
| 1 | 1,222,429,260.78 | $2,420.41 |
| 2 | 2,444,858,521.57 | $4,840.82 |
| 10 | 12,224,292,607.84 | $24,204.10 |
| 20 | 24,448,585,215.69 | $48,408.20 |
Payout network for ETH
The same ETH goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.
| Network | Per CAT | From | Network fee | Speed |
|---|---|---|---|---|
| Ethereum | 0.000000000818 | 103,039,670.27 CAT | ≈ $0.0026 | — |
| BNB Smart Chain (BEP20) | 0.000000000818 | 103,039,670.27 CAT | ≈ $0.0024 | fast |
| Arbitrum One | 0.000000000818 | 103,039,670.27 CAT | ≈ $0.001 | fast |
| Optimism open now | 0.000000000818 | 103,039,670.27 CAT | ≈ < $0.0001 | fast |
| BASE | 0.000000000818 | — | — | — |
How the CAT → ETH Optimism order runs
- Work out the amount in the calculator: orders start at 103,039,670.27 CAT.
- Enter a ETH address in Optimism and a way to reach you.
- Send CAT in Simon's Cat for exactly the amount stated in the order.
- Once the network confirms your transfer, Ethereum leaves for your address. The order page tracks every step.
Check this before sending CAT
- The address network is Optimism. Sending through another network usually means losing the transfer.
- The transfer must not be smaller than 103,039,670.27 CAT.
- 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 CAT to ETH Optimism rate has been
high 0.000000000855 ETH Optimismlow 0.000000000779 ETH Optimism
Sep 10, 2026 06:46Sep 17, 2026 06:46
high 0.000000001021 ETH Optimismlow 0.000000000734 ETH Optimism
Aug 17, 2026 03:00Sep 16, 2026 03:00
high 0.000000001115 ETH Optimismlow 0.000000000672 ETH Optimism
Jun 18, 2026 03:00Sep 16, 2026 03:00
high 0.00000000197 ETH Optimismlow 0.000000000672 ETH Optimism
Sep 17, 2025 03:00Sep 16, 2026 03:00
- 24 hours
- +0.12%
- Week
- −1.87%
- Weekly high
- 0.000000000855 ETH Optimism
- Weekly low
- 0.000000000779 ETH Optimism
- Spread
- 9.73%
Market data from CoinGecko as of Sep 17, 2026 06:24; the exchange rate is calculated separately and differs. Where these numbers come from
How far CAT/ETH Optimism travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 0.000000000816 | 0.0000000008 | 0.000000000808 | +0.12% |
| Week | 0.000000000855 | 0.000000000779 | 0.000000000814 | −1.87% |
| Month | 0.000000001021 | 0.000000000734 | 0.000000000807 | −8.37% |
| Quarter | 0.000000001115 | 0.000000000672 | 0.000000000788 | −5.58% |
Figures are in ETH Optimism per unit sent, from market data.
Daily CAT → ETH Optimism rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 16, 2026 | 0.000000000813 ETH Optimism | +1.29% |
| Sep 15, 2026 | 0.000000000802 ETH Optimism | −3.88% |
| Sep 14, 2026 | 0.000000000835 ETH Optimism | +1.6% |
| Sep 13, 2026 | 0.000000000822 ETH Optimism | +2.78% |
| Sep 12, 2026 | 0.000000000799 ETH Optimism | +1.29% |
| Sep 11, 2026 | 0.000000000789 ETH Optimism | −3.45% |
| Sep 10, 2026 | 0.000000000817 ETH Optimism | −3% |
The numbers on CAT and ETH
Simon's Cat CAT- Price
- $0.00000198
- 24 hours
- +1.05%
- Week
- −3.4%
- Market cap
- $14.87 M
- 24-hour turnover
- $698.78 K
- Rank by cap
- #986
- In circulation
- 7.5 T CAT
- Record price
- $0.00006811
Ethereum ETH- Price
- $2,431.99
- 24 hours
- +0.93%
- Week
- −1.5%
- Market cap
- $296.81 B
- 24-hour turnover
- $16.23 B
- Rank by cap
- #2
- In circulation
- 122.05 M ETH
- Record price
- $4,946.05
Source: CoinGecko, Sep 17, 2026 06:24.
Simon's Cat against Ethereum
| Simon's Cat (CAT) | Ethereum (ETH) | |
|---|---|---|
| Ticker | CAT | ETH |
| In circulation | 7.5 T CAT | 122.05 M ETH |
| Market cap | $14.87 M | $296.81 B |
| Rank by cap | #986 | #2 |
| Type | — | coin of its own network |
| Network | — | Optimism |
| Fees are paid in | — | ETH |
| Launched | — | 2015 |
| Built by | — | Vitalik Buterin |
| Consensus | — | Proof of Stake |
| Block | — | ~12 sec |
| Supply cap | — | no cap |
| Privacy | — | transfers are public |
Daily moves of CAT and ETH over 90 days line up at 0.42 — they travel alike.
Common questions: CAT → ETH Optimism
What rate does CAT to ETH Optimism run at?
As of Sep 17, 2026 06:43 it is 1 CAT = 0.000000000818 ETH Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.00000198947.
What amounts does CAT → ETH Optimism accept?
From 103,039,670.27 to 5,050,000,000,000 CAT per order. The lower limit is roughly $204.02.
Where does the 103,039,670.27 CAT floor come from?
Network fees and order handling eat a small transfer alive — below 103,039,670.27 CAT the swap stops making sense for either side.
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 CAT, and that one goes to the blockchain, not to us.
How long does CAT to ETH Optimism take?
The clock starts with confirmations: the order goes into work once Simon's Cat confirms your transfer. After that it comes down to how busy the network is.
Which network will ETH Optimism arrive in?
The payout leaves in Optimism. Make sure the receiving wallet works with that network.
Where is receiving ETH cheaper?
The cheapest is usually ETH BEP20, ETH Arbitrum, ETH 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 CAT to ETH Optimism rate do this month?
The month came in at minus 8.37%. Low 0.000000000734, high 0.000000001021, middle 0.000000000807 ETH Optimism per CAT.
Can I go back, ETH Optimism to CAT?
Yes, the reverse direction is open: 1 ETH Optimism = 1,228,581,297.29 CAT. The link sits right under the calculator.
Worth reading
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