Use the tool on this page to convert CSV data to JSON Buy ConvertCSV a Coffee at

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What can this tool do?

    Choose from the following 5 JSON conversions offered by this tool:
  • CSV to JSON - array of JSON structures matching your CSV, nested JSON via column headers, and JSONLines (MongoDB) mode
  • CSV to Keyed JSON - Generate JSON with the specified key field as the key value to a structure of the remaining fields, also known as an hash table or associative array. If the key field value is unique, then you have "keyvalue" : { object }, otherwise "keyvalue" : [ {object1}, {object2},... ]
  • CSV to JSON Array - An array of CSV values where the CSV values are in an array, or a structure with column names and data as an array
  • CSV to JSON Column Array - An array of CSV values where each column of values are in an array
  • Generate JSON via Template - Using our template engine, easily customize your JSON output NEW
  • Automatic detection of numeric values, logical values, and nulls
  • TSV to JSON

What are my options?

  • Choose your attribute names to be upper or lower case
  • Choose to limit the number of records processed
  • Select the fields to output and also rearrange JSON fields
  • Filter JSON output by using the query tool
  • Create nested JSON output by using / in the column headings of CSV. Arrays are created from duplicate column names or /0, /1, ... in the heading. See Output OptionsNEW
  • Sort CSV data in ascending or descending order before converting to JSON
  • Convert value of NULL in CSV to be null in JSON
  • Optionally output null instead of "" for empty fields
  • Optionally do not write out field : value if field value is empty. See Output Options
  • Terse Mode and Json Lines Mode - one object per line with no commas separating objects.
  • Add top level name property name to JSON output NEW See Output Options

What else?

Step 1: Select your input


Step 2: Choose input options (optional)

Input Options
Field Separator:

Step 3: Choose output options (optional)

Output Options

Sort CSV  
 Field #TypeDirection
First By
Then By
Then By

Comma separated, leave blank for all

Comma separated, leave blank for all

Step 4: Create Custom Output via Template (optional)

Modify template below and Press Convert   See also CSV Templates

Enter your template below and press the Convert button below.

Repeating Section for each Line of CSV


Step 5: Generate output

Choose Conversion Type:


You can Save the complete data and settings, and then later Load them from your saved file.