---
title: "eth_getBlockTransactionCountByNumber"
description: "Returns the transaction count for a Base block by number; on Flashblocks endpoints pending counts pre-confirmed transactions in the live Flashblock."
source: https://basehub.org/api-reference/eth/eth_getblocktransactioncountbynumber/
---
import { Aside } from '@astrojs/starlight/components';

Returns the number of transactions in a block matching the given block number.

<Aside type="tip">
**Flashblocks:** call `https://mainnet-preconf.base.org` with `"pending"` to count the pre-confirmed transactions in the current Flashblock.
</Aside>

## Parameters

| Position | Name | Type | Description |
| --- | --- | --- | --- |
| 1 | `block` | string | Block number in hex, or `"latest"`, `"pending"`, `"safe"`, `"finalized"`, `"earliest"`. Required. |

## Returns

| Field | Type | Description |
| --- | --- | --- |
| `result` | string | The number of transactions in the block as a hexadecimal integer. |

## Example

### Request

```json
{
  "jsonrpc": "2.0",
  "method": "eth_getBlockTransactionCountByNumber",
  "params": ["latest"],
  "id": 1
}
```

### Response

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1f"
}
```