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
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SEI vs BTC market cap comparison

As of Sep 17, 2026, if Sei (SEI) had Bitcoin's (BTC) market cap of $1.54T, one SEI would be worth $228.22, 5,204x its current price of $0.0439.

At Bitcoin's all-time-high market cap of $2.53T (Oct 6, 2025), SEI would be worth $376.10 (8,575x).

Bitcoin is 5,204x the size of Sei by market cap. The rank gap between them is 141 places.

The gap between SEI and BTC narrowed 0.34% since Sep 17, 2026.

MetricSei (SEI)Bitcoin (BTC)
Price (USD)$0.0439$76,506
Market cap (USD)$295.31M$1.54T
Market cap rank#142#1
Circulating supply6.73B SEI20.09M BTC
24h change+2.3%+0.54%

Price of Sei at Bitcoin's market cap: ($1.54T ÷ $295.31M) × $0.0439 = $228.22.

Questions

What would SEI be worth with Bitcoin's market cap?
Sei (SEI) would be worth $228.22 per coin with Bitcoin's market cap of $1.54T. That is 5,204x its price of $0.0439 on Sep 17, 2026.
How many times would SEI need to grow to reach Bitcoin's market cap?
Sei would need to grow 5,204x. Its market cap is $295.31M and Bitcoin's market cap is $1.54T.
How is the SEI price at BTC's market cap calculated?
Price of Sei at Bitcoin's market cap: ($1.54T ÷ $295.31M) × $0.0439 = $228.22.

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