How it works

Two ways to ask “what if”. Here’s an example with ETH and BTC.

Market cap

What if ETH had BTC's market cap?

We give ETH the same market cap as BTC, then divide by the supply used for ETH. NOW uses the current market cap of BTC; ATH uses its historical high.

Peak ratio

What if ETH hit its peak BTC ratio?

We find the highest recorded ETH/BTC price ratio in our available daily history, then apply it to the price of BTC today. This shows what one ETH would cost if it regained that relative strength.

Use the question below your result to flip between the two modes.

What if A had B's market cap?

Select A
Select B
Sticker Wall
$1/day·$5/day on top of another coin 😈
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ETC vs ARB market cap comparison

As of Sep 17, 2026, if Ethereum Classic (ETC) had Arbitrum's (ARB) market cap of $1.21B, one ETC would be worth $7.68, 1.03x its current price of $7.46.

At Arbitrum's all-time-high market cap of $16.22B (Jan 12, 2024), ETC would be worth $102.56 (13.75x).

Arbitrum is 1.03x the size of Ethereum Classic by market cap. The rank gap between them is 2 places.

MetricEthereum Classic (ETC)Arbitrum (ARB)
Price (USD)$7.46$0.179
Market cap (USD)$1.18B$1.21B
Market cap rank#70#68
Circulating supply158.2M ETC6.79B ARB
24h change+2.34%+9.45%

Price of Ethereum Classic at Arbitrum's market cap: ($1.21B ÷ $1.18B) × $7.46 = $7.68.

Questions

What would ETC be worth with Arbitrum's market cap?
Ethereum Classic (ETC) would be worth $7.68 per coin with Arbitrum's market cap of $1.21B. That is 1.03x its price of $7.46 on Sep 17, 2026.
How many times would ETC need to grow to reach Arbitrum's market cap?
Ethereum Classic would need to grow 1.03x. Its market cap is $1.18B and Arbitrum's market cap is $1.21B.
How is the ETC price at ARB's market cap calculated?
Price of Ethereum Classic at Arbitrum's market cap: ($1.21B ÷ $1.18B) × $7.46 = $7.68.

Data provided by CoinGecko. Refreshed daily. Last update Sep 17, 2026.