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 $5T market cap

As of Sep 14, 2026, if Ethereum (ETH) had a market cap of $5T, one ETH would be worth $40,974, 15.94x its current price of $2,570. Its market cap today is $313.59B.

Price of Ethereum at a $5T market cap: ($5T ÷ $313.59B) × $2,570 = $40,974.

Questions

What would ETH be worth at a $5T market cap?
Ethereum (ETH) would be worth $40,974 per coin at a $5T market cap. That is 15.94x its price of $2,570 on Sep 14, 2026.
How much would Ethereum need to grow to reach a $5T market cap?
Ethereum would need to grow 15.94x. Its market cap is $313.59B today.

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