# eth\_getUncleCountByBlockNumber

Returns the number of uncles in a block by number.

**Parameters**[**​**](https://docs.constellationnetwork.io/stargazer/APIReference/ethereumRPCAPI/eth_getUncleCountByBlockNumber#parameters)

| Name        | Type                                                            | Description                                                                |
| ----------- | --------------------------------------------------------------- | -------------------------------------------------------------------------- |
| BlockNumber | `HexString<Number>`\| `"latest"` \| `"earliest"` \| `"pending"` | Hexadecimal block number, or the string "latest", "earliest" or "pending". |

**Return Type**[**​**](https://docs.constellationnetwork.io/stargazer/APIReference/ethereumRPCAPI/eth_getUncleCountByBlockNumber#return-type)

`HexString<Number>` | `null` - Number of uncles in the block or null if not found.

**Example**[**​**](https://docs.constellationnetwork.io/stargazer/APIReference/ethereumRPCAPI/eth_getUncleCountByBlockNumber#example)

```typescript
await provider.request({
  method: "eth_getUncleCountByBlockNumber",
  params: ["0x5bad55"],
});
// "0x1"
```