Convert JSON to XLSX Online

CONVERT JSON to XLSX ONLINE

1) Upload JSON file to convert

Drop files here, or Click to select

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2) Set converting JSON to XLSX options

3) Get converted file

DOWNLOAD CONVERTED FILE

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Have complicated XML files? Try our Total XML Converter.

Total XML Converter To Convert XML files

Convert XML Files in Batch!;
Convert JSON to XLSX and in many other formats
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Convert hundreds of files in 3 clicks;
Have a desktop converter that works without Internet.

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Total XML Converter

Total XML Converter converts XML files to the widest list of output file formats: PDF, JSON, CSV, TXT, HTML, XLSX, SQL, XML, RTF, DOC, TIFF, JPEG, PNG, ACCESS, DBF.

If you have an XSLT file, you can add to to the app for the right transformation.

Convert XML in 3 ways: expand to table form, highlight XML tree or create a report.

Add the page counter or any text watermark to each page of the output file.

Our batch XML converter is very flexible: you can rely on default settings or change any of them to your needs.

Convert XML to PDF and add security settings (user permissions, passwords, digital signature, etc.)

During conversion all XML elements are transferred with the utmost accuracy.

The interface is strightforward and good for both beginners and advanced users.

With Total XML Converter you can extract images from XML files. Just one button for any number of files and you get the images in a new folder.

When you convert XML to JSON, select compact (al text in one line) or indented (human readable) view.

Converting XML to SQL, you can select the SQL options (Ansi, Interbase, DB2, MySQL, Oracle, etc.)

Want to add your logo? Use the header option: add any image you like.

Our app converts xml file or several folders in one process so that you could save time.

Convert XML to CSV format and select comma and separator.

Combine tables from different XML files when you convert XML files to CSV.

Total XML Converter can be run via command line ( you can get the command line from GUI in 1 click).

How to convert JSON to XLSX?

💾 Upload Your File: Go to the site, click on «Upload File,» and select your JSON file.

✍️ Set Conversion Options: Choose XLSX as the output format and adjust any additional options if needed.

Convert and Download: Click 👉«Download Converted File»👈 to get your XLSX file.

Cloud Based

There is no need to install any software to convert JSON to XLSX with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Converting JSON data to XLSX online has never been so simple. Drop your .json file and the converter flattens the structure — arrays become rows, object keys become column headers — and writes a proper Excel workbook ready for PivotTables, charts, and data analysis. No Excel or JSON parser required.

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We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

JSON File

File extension	.JSON
Category	Document File
Description	JSON, or JavaScript Object Notation, is a lightweight data interchange format used for exchanging data between systems. It is a text-based format that is easy for humans to read and write, and easy for machines to parse and generate. JSON is commonly used for web APIs because it is simple, efficient, and widely supported by programming languages. JSON consists of key-value pairs, with the keys being strings and the values being any valid JSON data type, including numbers, strings, objects, arrays, and boolean values. The syntax for a JSON object is enclosed in curly braces { } and the key-value pairs are separated by commas. JSON is a versatile format that can be used for many different purposes, including configuration files, data storage, and communication between web applications. Its simplicity and widespread support make it a popular choice for developers.
Associated programs	Total XML Converter
Developed by
MIME type
Useful links
Conversion type	JSON to XLSX

XLSX File

File extension	.XLSX, .EXCEL
Category	Document File
Description	XLSX is a format from Office Open XML family, a native MS Excel file type starting from version 2007. As opposite to XLS, this format uses ZIP compression that makes XLSX files smaller in size. Actually XLSX file is an archive of XML-documents. The cells in XLSX table can contain plain text, formulas or graphic elements. XLSX can be read in MS Office 2007 and later, Universal Viewer, OpenOffice, MS Office Excel Viewer, Corel WordPerfect Office. This format doesn’t support macros.
Associated programs	Microsoft Excel 2007 OpenOffice OxygenOffice Progessional (Linux)
Developed by	Microsoft
MIME type
Useful links	More detailed information on XLSX files

2026-02-18

I pull JSON responses from a REST API and need to hand the data to the marketing team in Excel — this converter flattened nested JSON objects into rows and columns automatically, which would have taken me an hour in Python.

Marcus Webb

2026-04-05

Our e-commerce platform exports order data as JSON; converting to XLSX lets the finance department run pivot tables and VLOOKUP without needing any developer help.

Oksana Bilenko

2026-01-27

I convert monthly JSON analytics exports from our monitoring tool into XLSX for management review; the array values get split into individual columns and the dates land in the right cell format.

Rajiv Sharma

Rating JSON to XLSX

4.8 (720 votes)Rate It

Convert JSON to XLSX — Frequently Asked Questions ▼

Can the converter handle nested JSON objects?

The converter flattens nested JSON into rows and columns automatically. Deeply nested structures may produce repeated column headers or dot-notation column names (e.g., 'address.city'). For complex nested JSON, review the output and merge columns as needed in Excel.

What happens if my JSON contains an array of objects?

Each object in the array becomes a row in the XLSX output, and each key becomes a column header. This is the most common JSON format for API responses and database exports, and it converts cleanly.

My JSON file has inconsistent keys across objects — will it work?

Yes. The converter scans all objects and creates columns for all unique keys found. Objects that do not have a given key will produce an empty cell in that column.

What is the maximum JSON file size I can upload?

The online converter accepts files up to 50 MB. For larger JSON exports from databases or APIs, use the desktop Total CSV Converter, which has no file size limit.

Can I batch-convert multiple JSON files to XLSX?

The online converter handles one file at a time. For batch conversion, use Total CSV Converter: TotalCSVConverter.exe C:\json_files C:\xlsx_out /ConvertTo xlsx /ProcessRecursively

Will data types (numbers, dates, booleans) be preserved in Excel?

Numbers and booleans are typically recognized and stored as their native Excel types. Date strings in ISO 8601 format may need manual formatting as dates in Excel after conversion.

Can I convert a JSON API response directly?

You need to save the API response as a .json file first, then upload it. The converter accepts any valid JSON file regardless of its origin.

Convert JSON to XLSX Online

APIs return JSON. Business stakeholders need Excel. Converting JSON to XLSX bridges that gap — flattening nested objects and arrays into rows and columns so the data can be analyzed with PivotTables, charted, filtered, and shared with anyone who uses Excel. No Python scripts, no programming required.

Nested JSON flattened — objects and arrays are mapped to rows and columns automatically
Keys become column headers — each JSON key maps to a named Excel column
Arrays become rows — each array element becomes a separate data row
No software installation — upload from any browser on Windows, Mac, Linux, or mobile
Files deleted after 1 hour — uploaded files are removed from the server automatically

What Is JSON?

JSON (JavaScript Object Notation) is a lightweight text-based data interchange format introduced in the early 2000s. It uses key-value pairs, arrays, and nested objects to represent structured data. JSON is the default output format of REST APIs, web services, NoSQL databases (MongoDB, Firebase), and modern configuration files. While human-readable, JSON is not directly usable in spreadsheet tools without conversion.

What Is XLSX?

XLSX is Microsoft Excel's Open XML spreadsheet format, the standard for business data since Office 2007. It supports formulas, charts, PivotTables, conditional formatting, multiple sheets, and cell-level formatting. XLSX is required by finance, operations, and reporting teams worldwide. Converting JSON data to XLSX makes it immediately available for analysis in Excel, Google Sheets, or LibreOffice Calc.

Online Converter vs Desktop Converter

Feature	Online (this page)	Total CSV Converter (desktop)
Batch conversion	✓ Single file	✓ Entire folders, recursive
File size limit	Up to 50 MB	No limit
Custom field mapping	✗	✓ Select which keys to include
Automation / scripting	✗	✓ Command-line, .bat, Task Scheduler
Files stay local	✗	✓ No upload required
Price	Free	From $29.90

Batch CLI example: TotalCSVConverter.exe C:\json_files C:\xlsx_out /ConvertTo xlsx /ProcessRecursively

How to Convert JSON to XLSX

Click Choose File and select your .json file
The format is detected automatically
Select XLSX as the output format
Click Convert — processing takes a few seconds
Click Download to save your Excel file
Open in Excel, Google Sheets, or LibreOffice Calc for analysis

When Do You Need JSON to XLSX?

API data analysis — converting a REST API response to Excel for business reporting
Database exports — MongoDB, Firebase, or CouchDB data exported as JSON needs Excel for non-technical stakeholders
E-commerce data — product catalogs, order data, or inventory exports from Shopify or WooCommerce
Survey results — converting JSON survey responses to Excel for tabulation and charting
Log analysis — turning structured JSON logs into filterable Excel tables for operations teams