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

ARB vs KAS market cap comparison

As of Sep 10, 2026, if Arbitrum (ARB) had Kaspa's (KAS) market cap of $1.02B, one ARB would be worth $0.1532, 1.04x its current price of $0.1478.

At Kaspa's all-time-high market cap of $5.74B (Jul 31, 2024), ARB would be worth $0.86 (5.82x).

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

MetricArbitrum (ARB)Kaspa (KAS)
Price (USD)$0.1478$0.037
Market cap (USD)$987.42M$1.02B
Market cap rank#75#72
Circulating supply6.68B ARB27.69B KAS
24h change-2.05%+3.02%

Price of Arbitrum at Kaspa's market cap: ($1.02B ÷ $987.42M) × $0.1478 = $0.1532.

Questions

What would ARB be worth with Kaspa's market cap?
Arbitrum (ARB) would be worth $0.1532 per coin with Kaspa's market cap of $1.02B. That is 1.04x its price of $0.1478 on Sep 10, 2026.
How many times would ARB need to grow to reach Kaspa's market cap?
Arbitrum would need to grow 1.04x. Its market cap is $987.42M and Kaspa's market cap is $1.02B.
How is the ARB price at KAS's market cap calculated?
Price of Arbitrum at Kaspa's market cap: ($1.02B ÷ $987.42M) × $0.1478 = $0.1532.

Data: CoinGecko, refreshed daily. Last update Sep 10, 2026.