Convert CSV to Delimited or CSV to Excel

Quickly convert existing CSV files to a new layout or export to Microsoft Excel (.xlsx)

This straightforward conversion streamlines and eliminates any headaches caused by incorrect CSV file structure, encoding or delimiter settings

  • 29+ Custom Built in parameters to make customizing easy
  • Rearrange/skip columns, edit headers, change quoting and delimiter, and much more!
  • Easily Control the design of the output CSV or Excel file
  • API Design allows you to pass a local file, simple CSV string, or Web URL
  • Extendable to external APIs by passing credentials or OATH
  • Full Documentation and example usage

You must have an API token to call our APIs. You are automatically assigned one upon registering and confirming your email. See our tutorial: Two Methods of API Authentication and Example Use below that demonstrate passing your token to our server. You must substitute your token found in the Account page in place of [YOUR TOKEN]. Also, use your data file name instead of [YOUR FILE], i.e. invoices.csv. All conversion APIs require the infile parameter since it is the data you are converting.
Note that to read from an S3 bucket that requires authorization, you must pass both username and password parameters, and the URL must start with s3://.
There is a 200MB limit on input. You may however zip your input file and use it for infile.

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Resulting curl command:

Parameter Value Type Description Example Use
infile


string This is the input file: raw data, or URL. Choose one of the options of "Local File", "URL", or "Data" curl -X POST "https://www.convertcsv.io/api/v1/csv2json/" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
integer Increase maximum field size of CSV input, pass -1 for the maximum curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?csvfieldsize=99999" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Input file delimiter, default is automatic detection. You usually will not need to use this. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?delimiter=%5E" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string File encoding - if not passed, the converter will attempt to determine the encoding by looking at the first few thousand bytes of the file. Typical values are: utf-8, utf-16. You can see a list of all supported types here: https://docs.python.org/3/library/codecs.html curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?encoding=ascii" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Exclude these fields in conversion. Use this if you want to convert all fields except these. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?exclude=5" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Do not output NULL for NULL in these fields. Many CSV files have NULL for NULL fields in a database table. The default is to convert those to NULL in SQL for instance, or null in JSON, however, NULL can be a legitimate value. Use this option to exclude fields from the default conversion. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?exnulls=5" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Include these fields in conversion. The default is to include all fields. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?fields=1,2,3" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Fields to force as numeric, i.e. 2 curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?forcenum=2" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Force quotes around the specified fields. For instance, when converting to CSV, you may always want a certain field wrapped in double quotes. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?forcequote=3,4" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Fields to force as text when opening with Excel - i.e. 4,5. Use this option to inform Excel that you want certain field(s) to be treated as text instead of numeric. You should only use this if you plan on opening the CSV using Excel. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?forcetext=4,5" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string List of header columns - Use this to override the headers on the CSV file. If the input has no headers (as specified by parameter noheader), then this parameter is a way to specify the headers. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?headover=pk,fullname,amount,comment" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean For each line, output header followed by delimiter, followed by a value. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?keyvalue=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
integer Limit number of output records to N, i.e. 100. If you have a large output file, use this option to limit your output. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?limit=10" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Output lower case for these fields curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?lower=6" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Input CSV file has no column headings curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?noheader=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Do not output header curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?nooutheader=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Convert 'NULL' to a NULL SQL value or null JSON value. Many popular tools export the string NULL in place of NULL values in tables. By default, the converter will convert ALL NULL values to a NULL SQL value or null JSON value. If you use this option, only the fields specified will be converted. See also exnulls. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?nulls=1,5,6" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Output file delimiter, i.e. : See also: outtab, outpipe, outsemi Depending on our operating system and delimiter, you may have to quote the delimiter in the OS shell, or URL encode the delimiter if used in a query string. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv" -F "infile=@[YOUR FILE]" -F outdelimiter=":" -H "Authorization: Token [YOUR TOKEN]"
boolean Output delimiter is |. This is a convenience method sense | has special meaning in some command line shells. In the API query string, it is easier to use than encoding the query string. See also: outdelimiter, outtab, outsemi curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?outpipe=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Output delimiter is semi-colon. This is a convenience method sense semi-colon has special meaning in some command line shells. In the API query string, it is easier to use than encoding the query string. See also: outdelimiter, outtab, outpipe curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?outsemi=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Output delimiter is Tab. This is a convenience method sense Tab is difficult to specify. See also: outdelimiter, outsemi, outpipe curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?outtab=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Output file encoding curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?out_encoding=" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Password for URL data source curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?password=bob&username=bee" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Output quoting in CSV output, N=None, M=Minimal, A=ALL. A will wrap all fields in double quotes. M will only wrap if necessary. N will not wrap with double quotes but will backslash special characters. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?quotingstyle=A" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Name of worksheet if outputting XLSX, default Sheet1 curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?sheetname=Data" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
integer Skip/Ignore N record at top of input file. You may have a CSV file with empty lines or extra verbiage at the top. Use this option to skip those lines. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?skiplines=2" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Supress line break in data curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?suppress=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean TAB is the CSV file delimiter curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?tab=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Trim spaces for these fields. Use column positions to identify the fields. For instance if you always want fields 4 and 5 without leading and trailing spaces, then use this option. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?trim=4,5" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Output upper case for these fields curl -X POST "https://www.convertcsv.io/api/v1/csv2csv=4,5" -F "infile=@[YOUR FILE]" -F "upper=1-4" -H "Authorization: Token [YOUR TOKEN]"
string Username for URL data source. This is only used when URLs are the data source. See password also. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?username=johnny&password=xyz" -F "infile=https://www.xyz.com/myinputfile.csv" -H "Authorization: Token [YOUR TOKEN]"
integer Skip N columns on the left side of the Excel sheet before beginning output curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xcols=2" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Enable auto-filter in Excel curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xfilter=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Generate footing in Excel curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xfooter=Copyright+2021" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
string Generate heading in Excel. The heading is only visible in Print mode. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xheader=Welcome" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Input file is an Excel file with either .xlsx or .xls extension. If your column headers do not start on line 1, then use the "skiplines" option to skip to the header or data. curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xin=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
boolean Generate Excel curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xlsx=1" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
integer Skip N rows at the top of the Excel sheet before beginning output curl -X POST "https://www.convertcsv.io/api/v1/csv2csv?xtop=5" -F "infile=@[YOUR FILE]" -H "Authorization: Token [YOUR TOKEN]"
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