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

ETH at a $500B market cap

As of Sep 14, 2026, if Ethereum (ETH) had a market cap of $500B, one ETH would be worth $4,097, 1.59x its current price of $2,570. Its market cap today is $313.59B.

Price of Ethereum at a $500B market cap: ($500B ÷ $313.59B) × $2,570 = $4,097.

Questions

What would ETH be worth at a $500B market cap?
Ethereum (ETH) would be worth $4,097 per coin at a $500B market cap. That is 1.59x its price of $2,570 on Sep 14, 2026.
How much would Ethereum need to grow to reach a $500B market cap?
Ethereum would need to grow 1.59x. Its market cap is $313.59B today.

Data: CoinGecko, refreshed daily. Last update Sep 14, 2026.