JSON to Excel — Convert JSON to XLSX Online
Turn JSON records into an Excel workbook with styled headers, filters and a frozen first row. Flatten nested objects and preview the table before downloading.
A real Excel workbook
Download a .xlsx file with styled headers, filters and a frozen first row. String identifiers keep their leading zeros.
All records contribute columns. Missing values and null become empty cells. Nested arrays stay in one cell; rows are never multiplied. Literal dots in keys are escaped with a backslash.
Need a plain CSV instead?Make the most of this tool
Each top-level object becomes one row. All records contribute columns, including fields missing from the first record.
Strings stay strings in XLSX, so identifiers such as "00123" retain leading zeros. Arrays stay in one cell.
This produces a genuine .xlsx workbook, not a CSV file with a different extension.
Frequently Asked Questions
Does this download a genuine Excel file?
Yes. The download is a .xlsx workbook with a frozen header row, filters, and styled column headings.
Will identifiers keep their leading zeros?
JSON strings such as "00123" remain text cells in XLSX. Keep identifiers as strings in your input; zeros already lost from a number cannot be recovered.
What happens to nested objects and arrays?
Nested objects can become columns with dotted paths. Arrays stay in one cell as JSON or a semicolon-separated list. All records contribute columns.