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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.

᠎᠎᠎          Tool Options

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?

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 try

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://onlinetools.com/csv/convert-csv-to-json?input=foo%2Cbar%2Cbaz%0Aa%2Cb%2Cc%0A1%2C2%2C3&char-delimiter=%252C&char-comments=%2523&char-quote=%2522&convert-headers=false&convert-skip-empty=false&convert-dynamic-types=false&formatting-none=true

All CSV Tools

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Convert CSV to JSON

Quickly convert a CSV file to a JSON data structure.

Convert JSON to CSV

Quickly convert a JSON data structure to a CSV file.

Convert CSV to XML

Quickly convert a CSV file to an XML file.

Convert XML to CSV

Quickly convert an XML file to a CSV file.

Convert CSV to YAML

Quickly convert a CSV file to a YAML file.

Convert YAML to CSV

Quickly convert a YAML file to a CSV file.

Convert CSV to TSV

Quickly convert a CSV file to a TSV file.

Convert TSV to CSV

Quickly convert a TSV file to a CSV file.

Convert CSV to Text Columns

Quickly convert a CSV file to evenly aligned text columns.

Convert Text Columns to CSV

Quickly convert text columns to a CSV file.

Convert CSV to Base64

Quickly encode CSV to base64.

Convert Base64 to CSV

Quickly decode base64 to CSV.

URL-encode CSV

Quickly convert CSV to URL-encoding.

URL-decode CSV

Quickly decode CSV from URL-encoding.

Change CSV Delimiter

Quickly change the CSV column delimiter to a new symbol.

Prepend a CSV Column

Quickly prepend columns at the beginning of a CSV file.

Append a CSV Column

Quickly append one or more new columns at the end of a CSV file.

Insert a CSV Column

Quickly insert one or more new columns anywhere in a CSV file.

Extract a CSV Column

Quickly export one or more columns from a CSV file.

Replace a CSV Column

Quickly replace any column in a CSV file with a new one.

Delete a CSV Column

Quickly delete one or more columns from a CSV file.

Swap CSV Columns

Quickly swap two columns in a CSV file.

Convert CSV Columns to Rows

Quickly exchange columns with rows in a CSV file.

Convert CSV Rows to Columns

Quickly exchange rows with columns in a CSV file.

Transpose CSV

Quickly transpose a CSV file.

Truncate CSV Columns

Quickly truncate columns in a CSV file.

Trim CSV Columns

Quickly left-trim and right-trim column values in a CSV file.

Sort CSV Columns

Quickly sort data in one or more CSV columns.

Remove CSV Quotes

Quickly remove double quotes from all CSV fields.

Add CSV Quotes

Quickly wrap all CSV fields in double quotes.

Change CSV Quote Character

Quickly change the character that CSV fields are wrapped in.

Validate CSV

Quickly make sure the given CSV file doesn't have errors.

Find Incomplete CSV Records

Quickly find rows and columns in CSV that are missing values.

Fill Incomplete CSV Records

Quickly fill missing CSV values with placeholder values.


Coming Soon

These CSV tools are on the way!
Edit CSV in the Browser

Edit the contents of a CSV file in a neat editor.

Deduplicate CSV Data

Remove duplicate rows in a CSV file.

Print CSV Statistics

Display detailed information about a CSV file.

Convert CSV to HTML

Convert a CSV file to an HTML table.

Convert HTML to CSV

Convert an HTML table to a CSV file.

Convert CSV to Markdown

Convert a CSV file to a Markdown table.

Convert Markdown to CSV

Convert a Markdown table to a CSV file.

Convert CSV to ASCII Table

Draw an ASCII table from CSV data.

Convert CSV to ANSI Table

Draw an ANSI table from CSV data.

Convert CSV to Unicode Table

Draw a Unicode table from CSV data.

Convert CSV to PDF

Convert CSV to a PDF document.

Convert PDF to CSV

Extract data from a PDF and create a CSV file.

Convert CSV to an Image

Draw a CSV file as a PNG, JPG or GIF picture.

Convert Image to CSV

Extract data from an image and create a CSV file.

Convert CSV to Excel

Convert a CSV file to an Excel spreadsheet.

Convert Excel to CSV

Convert an Excel spreadsheet to a CSV file.

Convert CSV to vCard

Convert a CSV file to a vCard file.

Convert vCard to CSV

Convert a vCard file to a CSV file.

Convert CSV to LaTeX

Convert CSV to a LaTeX table.

Convert CSV to SQL

Generate SQL insert queries from a CSV file.

Convert SQL to CSV

Create a CSV file from SQL query results.

Convert CSV to qCSV

Convert a CSV file to a qCSV (quoted CSV) file.

Convert qCSV to CSV

Convert a qCSV (quoted CSV) file to a CSV file.

Convert CSV to INI

Convert a CSV file to an INI file.

Convert INI to CSV

Convert an INI file to a CSV file.

Convert CSV to JSONL

Convert a CSV file to a JSONL (JSON Lines) file.

Convert JSONL to CSV

Convert a JSONL (JSON Lines) file to a CSV file.

Convert CSV to TXT

Convert a CSV file to a plain text file.

Convert TXT to CSV

Convert a plain text file to a CSV file.

Convert CSV to 0SV

Convert a CSV file to a null-separated values file (0SV).

Convert 0SV to CSV

Convert a null-separated values file (0SV) to a CSV file.

Convert CSV to SSV

Convert a CSV file to a semicolon-separated file (SSV).

Convert SSV to CSV

Convert a semicolon-separated file (SSV) to a CSV file.

Convert CSV to HSV

Convert a CSV file to a hash-separated file (HSV).

Convert HSV to CSV

Convert a hash-separated file (HSV) to a CSV file.

Convert CSV to PSV

Convert a CSV file to a pipe-separated file (PSV).

Convert PSV to CSV

Convert a pipe-separated file (PSV) to a CSV file.

Convert CSV to SQLite

Create an SQLite database from the given CSV file.

Convert SQLite to CSV

Export tables from an SQLite database as CSV files.

Convert CSV to GeoJSON

Convert a CSV file to a GeoJSON file.

Convert GeoJSON to CSV

Convert a GeoJSON file to a CSV file.

Merge CSV Files

Merge together two or more CSV files.

Compare Two CSV Files

Visually show the differences between two CSV files.

Diff Two CSV Files

Run the diff algorithm on two CSV files.

Find Data in CSV

Find CSV cells that contain certain data.

Filter CSV Cells

Return data in a CSV file that matches a pattern.

Slice CSV

Extract a slice from a CSV file.

Cut CSV

Cut a fragment from a CSV file.

Rotate CSV Columns

Move CSV columns to the left or right.

Rotate CSV Rows

Move CSV data rows up or down.

Sort CSV Rows

Sort the data in one or more CSV rows.

Shuffle CSV Columns

Randomly change the positions of CSV columns.

Shuffle CSV Rows

Randomly change the order of CSV rows.

Shuffle CSV Values

Randomly change the order of all CSV values.

Rename CSV Columns

Change the name of CSV columns.

Create a Random CSV

Generate a random CSV of any size.

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.

Delete Empty CSV Columns

Remove CSV columns that are completely empty.

Delete Empty CSV Rows

Remove CSV rows that are completely empty.

Delete Empty CSV Values

Remove all fields in a CSV file that are empty.

Delete Empty CSV Lines

Remove all empty lines in a CSV file.

Remove CSV Separator

Delete the comma separator from CSV files.

Remove Extra CSV Commas

Delete extra commas around CSV values.

Delete CSV Comments

Delete comments (lines starting with # or //) from CSV files.

Delete CSV Header

Delete the column header from a CSV file.

Delete First CSV Line

Delete the first line 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

Convert a CSV file to an m-by-n matrix.

Convert CSV to an Array of Arrays

Convert a CSV file to an array of arrays of fields.

Convert an Array of Arrays to CSV

Convert an array of arrays of fields to a CSV file.

Convert CSV Columns to a List

Create a list from one or more CSV columns.

Convert CSV Rows to a List

Create a list from one or more CSV rows.

Convert CSV Columns to an Array

Create an array from one or more CSV columns.

Convert CSV Rows to an Array

Create an array from one or more CSV rows.

Find CSV Dimensions

Find the number of rows and columns of a CSV file.

Count CSV Columns

Find the number of columns in a CSV file.

Count CSV Rows

Find the number of rows in a CSV file.

Sum CSV Columns

Find the sum of CSV columns.

Sum CSV Rows

Find the sum of CSV rows.

Average CSV Columns

Find the average value of CSV columns.

Average CSV Rows

Find the average value of CSV rows.

Add Color to CSV

Use different colors for CSV data, quotes, and commas.

Animate a CSV File

Animate CSV data by showing column after column.

Fix a Broken CSV

Automatically fix a broken CSV.

Add Errors to CSV

Introduce random errors to a CSV file for fuzz testing.

Anonymize CSV Data

Hide personal or sensitive information in a CSV file.

Censor CSV Data

Mask data in a CSV file.

Hide a Message in a CSV

Hide a secret message in a CSV.

Encrypt CSV

Encrypt a CSV file and hide information in it.

Decrypt CSV

Decrypt a previously encrypted CSV file and make it readable.

Visualize CSV

Create a visual drawing that shows the CSV structure.

Create a CSV File

Create a new CSV file in the browser.

Unleash Zalgo on CSV

Distort a CSV file by infusing it with Zalgo characters.

Purge Zalgo from CSV

Neutralize the chaotic Zalgo and restore CSV integrity.

CSV Viewer

Preview the contents of a CSV file in an interactive editor.


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