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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LIT vs ARB market cap comparison

As of Sep 17, 2026, if Lighter (LIT) had Arbitrum's (ARB) market cap of $1.21B, one LIT would be worth $4.86, 1.04x its current price of $4.67.

At Arbitrum's all-time-high market cap of $16.22B (Jan 12, 2024), LIT would be worth $64.93 (13.9x).

Arbitrum is 1.04x the size of Lighter by market cap. The rank gap between them is 3 places.

MetricLighter (LIT)Arbitrum (ARB)
Price (USD)$4.67$0.179
Market cap (USD)$1.17B$1.21B
Market cap rank#71#68
Circulating supply250M LIT6.79B ARB
24h change+2.5%+9.45%

Price of Lighter at Arbitrum's market cap: ($1.21B ÷ $1.17B) × $4.67 = $4.86.

Questions

What would LIT be worth with Arbitrum's market cap?
Lighter (LIT) would be worth $4.86 per coin with Arbitrum's market cap of $1.21B. That is 1.04x its price of $4.67 on Sep 17, 2026.
How many times would LIT need to grow to reach Arbitrum's market cap?
Lighter would need to grow 1.04x. Its market cap is $1.17B and Arbitrum's market cap is $1.21B.
How is the LIT price at ARB's market cap calculated?
Price of Lighter at Arbitrum's market cap: ($1.21B ÷ $1.17B) × $4.67 = $4.86.

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