Cardano vs Tether
Cardano (ADA) ranks #19 by market capitalization at $9.5B and Tether (USDT) ranks #3 at $184.1B, as of October 12, 2026. Cardano has a fixed maximum supply of 45.0B ADA; Tether has no fixed supply cap. Cardano is available on 26 exchanges we have verified and Tether on 21; 16 list both.
Verified How we verify
Side-by-Side
 Cardano |  Tether | |
|---|---|---|
| Market cap rank | #19 | #3 |
| Price | $0.253 | $0.999 |
| Market cap | $9.5B | $184.1B |
| Fully diluted valuation | $11.4B | $189.6B |
| 24-hour volume | $386.6M | $38.3B |
| Circulating supply | 37.6B ADA | 184.3B USDT |
| Maximum supply | 45.0B ADA | No fixed cap |
| All-time high | $3.09 (September 1, 2021) | $1.32 (July 23, 2018) |
| Change from all-time high | −91.8% | −24.5% |
| 7-day change | −4.9% | −0.1% |
| 30-day change | +22.1% | −0.1% |
| Category | layer-1 | stablecoin |
| Chains | the Cardano network | 11 chains including Ethereum, Klay Token, and Tezos |
| Launched | — | — |
Where You Can Buy Each
| Cardano | Tether | |
|---|---|---|
| Exchanges listing it | 26 | 21 |
| Countries and US states with a ranked buy page | 70 | 70 |
16 exchanges list both; 70 locations have a ranked buy page for both.
Frequently Asked Questions
- Which has the larger market cap, Cardano or Tether?
- Tether, by about 19.4× as of October 12, 2026: $9.5B for Cardano against $184.1B for Tether.
- Does Cardano or Tether have a fixed supply?
- Cardano is capped at 45.0B ADA; Tether has no fixed maximum supply.
- Where can I buy both Cardano and Tether?
- 16 exchanges we have verified list both. Pick your location on the buy pages to see which serve you and what a $500 purchase costs.