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Csv to json converter

World's simplest csv tool
Free online CSV to JSON converter. Just upload your CSV file in the form below and it will automatically get converted to JSON. In the tool options, you can adjust the CSV column delimiter character, quote character, and skip commented CSV lines. Additionally, you can adjust JSON's output format. Created by programmers from team Browserling.
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Input CSV Format
Column separator character.
Field quotation character.
Line comment symbol (skip lines).
Conversion Options
First row is treated as a header. (Used as JSON keys.)
Don't convert empty lines.
Don't quote numbers and booleans.
JSON Indentation
Indent output JSON with two spaces.
Indent output JSON with one tab.
Output minified JSON.

What is a csv to json converter?

learn more about this tool
This tool transforms Comma Separated Values (CSV) files to JavaScript Object Notation (JSON) data structures. Both formats are often used for data migration and backups, as well as as a data exchange format in various applications, including databases. Both formats, CSV and JSON, are semi-structured, which means the data has a raw format (viewable in a text editor) but still has some structure, allowing it to be parsed and easily extracted. By default, the CSV format uses a comma symbol to separate data columns and a double-quote symbol to quote fields. However, in the options of this tool, you can customize these values. If the input CSV data has a delimiter other than a comma (such as a semicolon ; or a pipe symbol |), then you can specify it in the "Column Separator" option. If the CSV uses a different character for quoting the fields (such as a single quote '), you can specify this quoting character in the "Field Quotation Character" option. In case the CSV contains comments (which usually start with a hash symbol # or a double slash //), you can exclude them by specifying the comment symbol in the "Line Comment Symbol" option, thereby speeding up parsing of the CSV as unnecessary lines will be skipped and won't be parsed. Several other options control the conversion process. If your CSV file has column titles (called headers) on the first row of data, the tool can automatically use the header values to set the keys of the JSON object. If the input CSV contains empty lines, you can choose to skip them. If empty lines aren't skipped, then a single empty value will be created for the first column of data. Additionally, you can customize the format of the output JSON. Specifically, you can choose not to wrap JSON numbers and booleans in quotes, as well as choose how to indent the JSON data structure. It can be indented with two spaces per level, a tab per level, or minified by using no indentation. Also, for the reverse transformation from JSON to CSV, you can use our Convert JSON to CSV tool. Csv-abulous!

Csv to json converter examples

Click to use
Three-column CSV to Unformatted JSON
In this example, we convert a CSV with three columns into a JSON array of arrays of three elements. Each value from the CSV is converted into an individual item in the JSON array, wrapped in quotes, and placed in an array. After the conversion, all arrays are nested together, producing the output JSON. Additionally, the output JSON is minified, as we select the the unformatted JSON mode without indentation.
foo,bar,baz a,b,c 1,2,3
[["foo","bar","baz"],["a","b","c"],["1","2","3"]]
Required options
These options will be used automatically if you select this example.
Column separator character.
Field quotation character.
Line comment symbol (skip lines).
First row is treated as a header. (Used as JSON keys.)
Don't convert empty lines.
Don't quote numbers and booleans.
Output minified JSON.
Use CSV Headers as JSON Keys
In this example, we load a CSV that uses semicolons as field separators. To convert this non-standard CSV to JSON, we specify the semicolon ";" as the separator symbol in the options. We also enable the headers option, which creates an array of JSON objects with the header values as keys of the JSON objects. For a nice visual formatting of the output JSON, we choose a two-space indentation, which is applied to each level of JSON.
name;age;school richard;25;sjsu alex;18;mstu
[ { "name": "richard", "age": "25", "school": "sjsu" }, { "name": "alex", "age": "18", "school": "mstu" } ]
Required options
These options will be used automatically if you select this example.
Column separator character.
Field quotation character.
Line comment symbol (skip lines).
First row is treated as a header. (Used as JSON keys.)
Don't convert empty lines.
Don't quote numbers and booleans.
Indent output JSON with two spaces.
Convert Book CSV Data to JSON
This example converts CSV data about famous books into JSON. It uses the first line of data as the key values for the JSON objects. It also skips empty lines and commented lines starting with the "#" symbol. It also enables the dynamic data types option, which prints numbers and booleans without quotes. Finally, it indents the JSON data structure with tabs.
title,author,genre,publication,film_adaptation The Hunger Games,Suzanne Collins,Dystopian,2008,true #Pride and Prejudice,Jane Austen,Romance,1813,true The Lord of the Rings,J.R.R. Tolkien,Fantasy,1954,true
[ { "title": "The Hunger Games", "author": "Suzanne Collins", "genre": "Dystopian", "publication": 2008, "film_adaptation": true }, { "title": "The Lord of the Rings", "author": "J.R.R. Tolkien", "genre": "Fantasy", "publication": 1954, "film_adaptation": true } ]
Required options
These options will be used automatically if you select this example.
Column separator character.
Field quotation character.
Line comment symbol (skip lines).
First row is treated as a header. (Used as JSON keys.)
Don't convert empty lines.
Don't quote numbers and booleans.
Indent output JSON with one tab.
Pro tips Master online csv tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinecsvtools.com/convert-csv-to-json?input=foo%2Cbar%2Cbaz%0Aa%2Cb%2Cc%0A1%2C2%2C3&char-delimiter=%2C&char-comments=%23&char-quote=%22&convert-headers=false&convert-skip-empty=false&convert-dynamic-types=false&formatting-none=true
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Convert a CSV file to an HTML table.
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Convert CSV to PDF
Convert CSV to a PDF document.
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Extract data from a PDF and create a CSV file.
Convert CSV to an Image
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Extract data from an image and create a CSV file.
Convert CSV to Excel
Convert a CSV file to an Excel spreadsheet.
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Convert CSV to vCard
Convert a CSV file to a vCard file.
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Convert CSV to LaTeX
Convert CSV to a LaTeX table.
Convert CSV to SQL
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Convert CSV to INI
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Convert CSV to JSONL
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Convert a JSONL (JSON Lines) file to a CSV file.
Convert CSV to TXT
Convert a CSV file to a plain text file.
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Convert CSV to SSP
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Convert CSV to HSP
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Merge together two or more CSV files.
Compare Two CSV Files
Visually show the differences between two CSV files.
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Return data in a CSV file that matches a pattern.
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Rotate CSV Rows
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Sort CSV Columns
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Sort CSV Rows
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Shuffle CSV Columns
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Shuffle CSV Values
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Create a Random CSV
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Create an Empty CSV File
Generate a CSV file that contains nothing.
Create a Large CSV File
Generate a large CSV file for testing.
Create a Custom CSV File
Generate a custom CSV file with m rows and n columns.
Unquote CSV Fields
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Quote CSV Fields
Wrap all CSV fields in double quotes.
Change CSV Quote Character
Change the character that CSV fields are wrapped in.
Delete Empty CSV Columns
Delete columns that are completely empty.
Delete Empty CSV Rows
Delete rows that are completely empty.
Delete Empty CSV Values
Delete all items in a CSV file that are empty.
Remove CSV Separator
Delete the comma separator from CSV files.
Delete CSV Comments
Delete comments (lines starting with # or //) from CSV files.
Delete CSV Header
Delete the column header from a CSV file.
Compress a CSV File
Minify a CSV file and remove unnecessary whitespaces.
Optimize CSV File Size
Reduce the file size of a CSV file.
Change CSV Encoding
Change the character encoding of a CSV file to UTF8 or ISO-8859-1.
Add Extra Spaces in CSV
Add extra spaces between CSV columns.
Convert CSV to a Matrix
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Convert CSV to an Array of Arrays
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Convert an Array of Arrays to CSV
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Convert CSV Columns to an Array
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Sum CSV Columns
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Sum CSV Rows
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Animate a CSV File
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Automatically fix a broken CSV.
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CSV Viewer
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