Sometimes I have a CSV file but I cannot use it because the software I am using requires JSON.
You can use this tool to convert a CSV file to a JSON file. After the conversion, you can download your JSON file and use it with the software you need.
How to Convert a CSV File to a JSON File
Upload your CSV file using the data input at the top of the page
A download button will appear when the conversion has been completed
Click the download button to get your JSON file
How do I open a CSV file with more than 1048576 rows
You cannot open a CSV file with more than 1048576 rows using Excel. Excel has a row limit of 1048576, which means you will need to open multiple Excel sheets to view all of your data. This means you cannot analyze the whole data set using Excel.
You can open and graph by CSV file with more than 1048576 rows using We Do Data Science. Just select the graph or analysis you want to perform and then upload your CSV file. After you've performed your analysis, you can download the results.