# eth\_estimateGas (BSC)

{% hint style="info" %}
Note that the estimate may be significantly more than the amount of gas actually used by the transaction, for a variety of reasons including EVM mechanics and node performance.
{% endhint %}

**Parameters**

* `Object` - The transaction call object
  * `from`: `DATA`, 20 Bytes - (optional) The address the transaction is sent from.
  * `to`: `DATA`, 20 Bytes - The address the transaction is directed to.
  * `gas`: `QUANTITY` - (optional) Integer of the gas provided for the transaction execution. `eth_estimateGas` consumes zero gas, but this parameter may be needed by some executions.
  * `gasPrice`: `QUANTITY` - (optional) Integer of the gasPrice used for each paid gas.
  * `value`: `QUANTITY` - (optional) Integer of the value sent with this transaction
  * `data`: `DATA` - (optional) Hash of the method signature and encoded parameters. For details see Ethereum Contract ABI

**Returns**

`QUANTITY` - the amount of gas used.

**Request example**

{% tabs %}
{% tab title="Curl" %}

```bash
curl https://bsc.api.watchdata.io/node/jsonrpc?api_key=your_api_key
-X POST \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [
        {
            "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
            "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
            "value": "0x186a0"
        }
    ],
    "id": 1
}'
```

{% endtab %}

{% tab title="Postman" %}

```json
URL: https://bsc.api.watchdata.io/node/jsonrpc?api_key=your_api_key
RequestType: POST
Body: 
{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [
        {
            "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
            "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
            "value": "0x186a0"
        }
    ],
    "id": 1
}
```

{% endtab %}
{% endtabs %}

**Result**

```javascript
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x5208" // 21000
}
```