CSV to XLSX API

The API for converting Csv documents to Excel files.

The API for converting comma-separated values CSV file to Excel XLSX file.

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API Endpoint

ConvertAPI offers a cloud-based solution, which makes CSV to XLSX conversion effortless with just a single REST-API call:

        HTTP POST
    
https://v2.convertapi.com/convert/csv/to/xlsx

Postman OpenAPI cURL CLI

Authenticate your API call

Converting csv to xlsx via REST-API is now easier than ever. Sign up for a free account to obtain your authentication secret, append it as a query string parameter to the conversion URL, and voilà! You can find advanced authentication techniques in our docs.

        QUERY AUTHENTICATION
    
https://v2.convertapi.com/convert/csv/to/xlsx?secret=your-api-secret

Convert CSV to XLSX using REST-API in no time!

Once you have your authentication in place, you can convert your files using application/json, multipart/form-data and application/octet-stream content types. A simple HTTP POST request using JSON would look like this:

// Code snippet is using the ConvertAPI JavaScript Client: https://github.com/ConvertAPI/convertapi-js

// Code snippet is using the ConvertAPI Node.js Client: https://github.com/ConvertAPI/convertapi-nodejs

// Code snippet is using the ConvertAPI PHP Client: https://github.com/ConvertAPI/convertapi-php

// Code snippet is using the ConvertAPI Java Client: https://github.com/ConvertAPI/convertapi-java

// Code snippet is using the ConvertAPI C# Client: https://github.com/ConvertAPI/convertapi-dotnet

# Code snippet is using the ConvertAPI Ruby Client: https://github.com/ConvertAPI/convertapi-ruby

# Code snippet is using the ConvertAPI Python Client: https://github.com/ConvertAPI/convertapi-python

// Code snippet is using the ConvertAPI Go Client: https://github.com/ConvertAPI/convertapi-go

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Conversion request using cURL

You can easily convert csv to xlsx with a simple cURL request. Our documentation provides more advanced cURL request techniques.

File conversion using CLI

ConvertAPI CLI allows you to convert files using our command-line file conversion utility tool. Check out CLI documentation for a detailed explanation and usage examples.

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Upload the file and see how it works

You can set up the advanced conversion parameters and test the conversion result online using our interactive demo tool. It will auto-generate the code snippet for you!

Advanced CSV to XLSX conversion parameters

CellType Collection

Set Excel cell type, if set as text the date and number format will be the same as in CSV file.

Values: general text

Delimiter String

Set fields separator.