Is there any limit for JSON size in post method?

Hello,
There is no limit for JSON data.

JSON is similar to other data formats like XML - if you need to transmit more data, you just send more data. There's no inherent size limitation to the overall JSON request itself. Any limitation would be set by the server parsing the JSON request. (For instance, ASP.NET has the "MaxJsonLength" property of the serializer.)

Please refer the Below Link:
asp.net mvc 4 - JSON data size limit - Stack Overflow[^]

MaxJsonLength: This helps to get or set the maximum JSON content length that you will send. The default value for this is 2097152 characters, that is equal to 4 MB of Unicode string data. You can even increase the size based if needed, for that you will get an idea later in this article

solutions:
protected override JsonResult Json(object data, string contentType,
Encoding contentEncoding, JsonRequestBehavior behavior)
{
return new JsonResult()
{
Data = data,
ContentType = contentType,
ContentEncoding = contentEncoding,
JsonRequestBehavior = behavior,
MaxJsonLength = Int32.MaxValue
};
}

This is confusing I have a nomal ajax call that work fine with 110 records but when I add more that this number I get sy
ntaxerror unexpected token in json at position 0