Swap Simon's Cat (CAT) for Ethereum (ETH BASE)
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 18, 2026 01:08
- Payout network
- BASE
- 24 hours
- +0.77%
Today CAT goes for 0.000000000818 ETH BASE, and ETH BASE goes for 1,223,219,588.23 CAT. Market over 24 hours: CAT against ETH BASE plus 0.77%. The week added plus 2.65%.
The weekly corridor ran from 0.000000000779 to 0.000000000855 ETH BASE, a spread of 9.73%.
The payout leaves in the BASE network, so the receiving address has to belong to that network. By market cap Simon's Cat sits 985th ($14.92 M) and Ethereum 2th ($299.08 B). Daily moves of CAT and ETH over 90 days line up at 0.42 (they travel alike).
Who takes the CAT → ETH BASE route
- Fuel for BASEWithout Ethereum nothing moves in BASE — 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 BASE → CAT direction is open too, so going back into CAT takes the same route.
CAT → ETH BASE rate and amounts
1 CAT = 0.000000000818 ETH BASE
1 ETH BASE = 1,223,219,588.23 CAT
Send CAT — receive ETH BASE
| CAT | ETH BASE | ≈ USD |
|---|---|---|
| 10,000,000 | 0.00817515 | $19.90 |
| 50,000,000 | 0.0408757 | $99.50 |
| 200,000,000 | 0.163503 | $398.00 |
| 2,000,000,000 | 1.635 | $3,980.00 |
| 10,000,000,000 | 8.1751 | $19,900.00 |
| 50,000,000,000 | 40.8757 | $99,500.00 |
Need ETH BASE — send this much CAT
| ETH BASE | CAT | ≈ USD |
|---|---|---|
| 0.005 | 6,116,097.94 | $12.17 |
| 0.02 | 24,464,391.76 | $48.68 |
| 0.1 | 122,321,958.82 | $243.42 |
| 1 | 1,223,219,588.23 | $2,434.21 |
| 5 | 6,116,097,941.13 | $12,171.03 |
| 20 | 24,464,391,764.53 | $48,684.14 |
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 | ≈ $0.003 | — |
| BNB Smart Chain (BEP20) | 0.000000000818 | 103,039,670.27 CAT | ≈ $0.0024 | fast |
| Arbitrum One | 0.000000000818 | 103,039,670.27 CAT | ≈ $0.0011 | fast |
| Optimism | 0.000000000818 | 103,039,670.27 CAT | ≈ < $0.0001 | fast |
| BASE open now | 0.000000000818 | — | — | — |
How the CAT → ETH BASE order runs
- Work out the amount in the calculator and press the exchange button.
- Enter a ETH address in BASE 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 BASE. 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 CAT to ETH BASE rate has been
high 0.000000000855 ETH BASElow 0.000000000779 ETH BASE
Sep 11, 2026 01:12Sep 18, 2026 01:12
high 0.000000001021 ETH BASElow 0.000000000734 ETH BASE
Aug 18, 2026 03:00Sep 17, 2026 03:00
high 0.000000001115 ETH BASElow 0.000000000672 ETH BASE
Jun 19, 2026 03:00Sep 17, 2026 03:00
high 0.00000000197 ETH BASElow 0.000000000672 ETH BASE
Sep 18, 2025 03:00Sep 17, 2026 03:00
- 24 hours
- +0.77%
- Week
- +2.65%
- Weekly high
- 0.000000000855 ETH BASE
- Weekly low
- 0.000000000779 ETH BASE
- Spread
- 9.73%
Market data from CoinGecko as of Sep 17, 2026 22:24; the exchange rate is calculated separately and differs. Where these numbers come from
How far CAT/ETH BASE travelled, by period
| Period | High | Low | Middle | Net move |
|---|---|---|---|---|
| 24 hours | 0.000000000821 | 0.000000000801 | 0.000000000812 | +0.77% |
| Week | 0.000000000855 | 0.000000000779 | 0.000000000815 | +2.65% |
| Month | 0.000000001021 | 0.000000000734 | 0.000000000805 | −8.07% |
| Quarter | 0.000000001115 | 0.000000000672 | 0.000000000787 | −2.28% |
Figures are in ETH BASE per unit sent, from market data.
Daily CAT → ETH BASE rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 17, 2026 | 0.000000000803 ETH BASE | −1.28% |
| Sep 16, 2026 | 0.000000000813 ETH BASE | +1.38% |
| Sep 15, 2026 | 0.000000000802 ETH BASE | −3.88% |
| Sep 14, 2026 | 0.000000000835 ETH BASE | +1.6% |
| Sep 13, 2026 | 0.000000000822 ETH BASE | +2.78% |
| Sep 12, 2026 | 0.000000000799 ETH BASE | +1.29% |
| Sep 11, 2026 | 0.000000000789 ETH BASE | −3.45% |
The numbers on CAT and ETH
Simon's Cat CAT- Price
- $0.00000199
- 24 hours
- +3.4%
- Week
- +2.2%
- Market cap
- $14.92 M
- 24-hour turnover
- $624.69 K
- Rank by cap
- #985
- In circulation
- 7.5 T CAT
- Record price
- $0.00006811
Ethereum ETH- Price
- $2,450.84
- 24 hours
- +2.61%
- Week
- −0.6%
- Market cap
- $299.08 B
- 24-hour turnover
- $13.09 B
- Rank by cap
- #2
- In circulation
- 122.06 M ETH
- Record price
- $4,946.05
Source: CoinGecko, Sep 17, 2026 22:24.
Simon's Cat against Ethereum
| Simon's Cat (CAT) | Ethereum (ETH) | |
|---|---|---|
| Ticker | CAT | ETH |
| In circulation | 7.5 T CAT | 122.06 M ETH |
| Market cap | $14.92 M | $299.08 B |
| Rank by cap | #985 | #2 |
| Type | — | coin of its own network |
| Network | — | BASE |
| 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 BASE
What rate does CAT to ETH BASE run at?
As of Sep 18, 2026 01:08 it is 1 CAT = 0.000000000818 ETH BASE. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $0.0000020036.
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 BASE 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 BASE arrive in?
The payout leaves in BASE. 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 BASE rate do this month?
The month came in at minus 8.07%. Low 0.000000000734, high 0.000000001021, middle 0.000000000805 ETH BASE per CAT.
Can I go back, ETH BASE to CAT?
Yes, the reverse direction is open: 1 ETH BASE = 1,229,375,602.15 CAT. The link sits right under the calculator.
Worth reading
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The other way round
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