Bitcoin vs Ethereum
Bitcoin (BTC) ranks #1 by market capitalization at $1.68T and Ethereum (ETH) ranks #2 at $308.7B, as of October 13, 2026. Bitcoin has a fixed maximum supply of 21.0M BTC; Ethereum has no fixed supply cap. Bitcoin is available on 36 exchanges we have verified and Ethereum on 32; 32 list both.
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Side-by-Side
 Bitcoin |  Ethereum | |
|---|---|---|
| Market cap rank | #1 | #2 |
| Price | $83,570 | $2,527 |
| Market cap | $1.68T | $308.7B |
| Fully diluted valuation | $1.68T | $308.7B |
| 24-hour volume | $31.9B | $16.2B |
| Circulating supply | 20.1M BTC | 122.1M ETH |
| Maximum supply | 21.0M BTC | No fixed cap |
| All-time high | $126,080 (October 6, 2025) | $4,946 (August 24, 2025) |
| Change from all-time high | −33.7% | −48.9% |
| 7-day change | −2.3% | −6.4% |
| 30-day change | +8.3% | +0.4% |
| Category | layer-1 | layer-1 |
| Chains | the Bitcoin network | the Ethereum network |
| Launched | 2009 | 2015 |
Where You Can Buy Each
| Bitcoin | Ethereum | |
|---|---|---|
| Exchanges listing it | 36 | 32 |
| Countries and US states with a ranked buy page | 70 | 70 |
32 exchanges list both; 70 locations have a ranked buy page for both.
Frequently Asked Questions
- Which has the larger market cap, Bitcoin or Ethereum?
- Bitcoin, by about 5.4× as of October 13, 2026: $1.68T for Bitcoin against $308.7B for Ethereum.
- Does Bitcoin or Ethereum have a fixed supply?
- Bitcoin is capped at 21.0M BTC; Ethereum has no fixed maximum supply.
- Where can I buy both Bitcoin and Ethereum?
- 32 exchanges we have verified list both. Pick your location on the buy pages to see which serve you and what a $500 purchase costs.
- Which is older, Bitcoin or Ethereum?
- Bitcoin, launched in 2009. Ethereum launched in 2015.