How it works
Complete the job in three clear steps
- Add a JSON array of records to the local workspace.
- Choose the available options and create an XLSX workbook.
- Review, copy, or download the result before leaving the page.
Private Lucaden office & spreadsheets tool
JSON to Excel Converter
Convert an array of JSON objects into an XLSX worksheet with flattened nested fields.
Free to use Your source content is processed in this browser and is not uploaded to Lucaden.
Loading tool workspace…
Important
Check the result before relying on it
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
What this Lucaden tool does
Nested objects are flattened into dot-separated column paths while arrays remain JSON strings. All discovered keys form a stable header row so records with different optional fields can share one sheet.
The transformation happens in browser memory and produces a new result without changing the source on your device.
Included capabilities
- Array-of-object validation
- Nested object flattening
- Union of record fields
- Styled XLSX output
Useful for
- Share API data with analysts
- Create spreadsheet exports
- Review webhook records
- Build test workbooks
Questions
About this tool
What JSON shape is required?
Use an array of objects. Primitive arrays and a single object are rejected to avoid ambiguous worksheet layout.
How are nested arrays handled?
They are stored as JSON text in one cell.
Open-source foundations
Built transparently
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.