> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# eth_getBlockTransactionCountByNumber | zkEVM

> Polygon zkEVM method that returns the number of transactions in a block specified by block number or tag. Chainstack zkEVM reference.

Polygon zkEVM method that returns the number of transactions in a block specified by block number or tag. This information can be useful for analytics purposes.

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## Parameters

* `quantity or tag` — the integer of a block encoded as hexadecimal or the string with:

  * `latest` — the most recent block in the blockchain and the current state of the blockchain at the most recent block
  * `earliest` — the earliest available or genesis block
  * `pending`—the pending state and transactions block. This is the current state of transactions that have been broadcast to the network but have not yet been included in a block.

<Note>
  See the [default block parameter](https://eth.wiki/json-rpc/API#the-default-block-parameter).
</Note>

## Response

* `quantity` — an integer value representing how many transactions are included in the block.

## `eth_getBlockTransactionCountByNumber` code examples

<CodeGroup>
  ```javascript web3.js theme={"system"}
  const { Web3 } = require("web3");
  const NODE_URL = "CHAINSTACK_NODE_URL";
  const web3 = new Web3(NODE_URL);

  async function getTransactionsCount(blockId) {
    const count = await web3.eth.getBlockTransactionCount(blockId)
    console.log(count);
  }

  getTransactionsCount('latest')
  ```

  ```javascript ethers.js theme={"system"}
  const ethers = require('ethers');
  const NODE_URL = "CHAINSTACK_NODE_URL";
  const provider = new ethers.JsonRpcProvider(NODE_URL);

  const getTransactionsCount = async (blockId) => {
      const count = await provider.send("eth_getBlockTransactionCountByNumber", [blockId]);
       console.log(count);
     };

     getTransactionsCount('latest')
  ```

  ```python web3.py theme={"system"}
  from web3 import Web3  
  node_url = "CHAINSTACK_NODE_URL" 

  web3 = Web3(Web3.HTTPProvider(node_url)) 
  print (web3.eth.get_block_transaction_count(37278959)) # A hex value starting with "0x" is accepted as well.
  ```
</CodeGroup>

## Use case

`eth_getBlockTransactionCountByNumber` can be used to analyze how many transactions are included on the Polygon zkEVM blockchain in a certain period. For instance, on average, a new block is generated on the zkEVM mainnet every 3 seconds, resulting in approximately 1,200 blocks per hour. Using a Web3 library, one can inspect the past 1,00 blocks starting from the latest block and use `eth_getBlockTransactionCountByNumber` to find the number of transactions in each block to sum them.


## OpenAPI

````yaml /openapi/polygon_zkevm_node_api/eth_getBlockTransactionCountByNumber.json POST /942aad90bb6a082676497030b81e40ba
openapi: 3.0.0
info:
  title: Polygon zkEVM Node API
  version: 1.0.0
  description: This is an API for interacting with a zkEVM node.
servers:
  - url: https://nd-363-550-219.p2pify.com
security: []
paths:
  /942aad90bb6a082676497030b81e40ba:
    post:
      tags:
        - Blocks info
      summary: eth_getBlockTransactionCountByNumber
      operationId: getBlockTransactionCountByNumber
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: eth_getBlockTransactionCountByNumber
                params:
                  type: array
                  items:
                    type: string
                    title: Block identifier
                    description: The block number or tag.
                  default:
                    - latest
      responses:
        '200':
          description: The block transaction count information
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string

````