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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XAUT vs ETH market cap comparison

As of Sep 17, 2026, if Tether Gold (XAUT) had Ethereum's (ETH) market cap of $299.31B, one XAUT would be worth $480,563, 110.72x its current price of $4,341.

At Ethereum's all-time-high market cap of $603.7B (Aug 24, 2025), XAUT would be worth $969,287 (223.31x).

Ethereum is 110.72x the size of Tether Gold by market cap. The rank gap between them is 35 places.

The gap between XAUT and ETH narrowed 0.14% since Sep 17, 2026.

MetricTether Gold (XAUT)Ethereum (ETH)
Price (USD)$4,341$2,452
Market cap (USD)$2.7B$299.31B
Market cap rank#37#2
Circulating supply622.82K XAUT122.06M ETH
24h change+1.66%+1.83%

Price of Tether Gold at Ethereum's market cap: ($299.31B ÷ $2.7B) × $4,341 = $480,563.

Questions

What would XAUT be worth with Ethereum's market cap?
Tether Gold (XAUT) would be worth $480,563 per coin with Ethereum's market cap of $299.31B. That is 110.72x its price of $4,341 on Sep 17, 2026.
How many times would XAUT need to grow to reach Ethereum's market cap?
Tether Gold would need to grow 110.72x. Its market cap is $2.7B and Ethereum's market cap is $299.31B.
How is the XAUT price at ETH's market cap calculated?
Price of Tether Gold at Ethereum's market cap: ($299.31B ÷ $2.7B) × $4,341 = $480,563.

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