> For the complete documentation index, see [llms.txt](https://docs.belugas.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.belugas.io/getting-started/protocol-math/atoken-and-underlying-decimals.md).

# bToken and Underlying Decimals

Prices and exchange rates are scaled by the decimals unique to each asset; bTokens are ERC-20 tokens with 8 decimals, while their underlying tokens vary, and have a public member named *decimals*.

| bToken | bToken Decimals | Underlying | Underlying Decimals |
| ------ | --------------- | ---------- | ------------------- |
| bUSDT  | 8               | USDT       | 6                   |
| bUSDC  | 8               | USDC       | 6                   |
| bWBTC  | 8               | WBTC       | 8                   |
| bWETH  | 8               | WETH       | 18                  |