JSON To Excel Converter
Paste or upload JSON, auto-extract array lists, and download CSV or XLSX — all in your browser. Your data never leaves your device.
How it works
1. Paste or upload JSON
Paste a JSON response, select a .json file, or drag a file in. Everything is processed locally in your browser.
2. Auto-extract arrays and flatten fields
The tool recursively finds every array and turns each into a table. Nested objects are flattened into dot-path columns, e.g. customer.contact.email becomes a column header.
3. Download CSV or XLSX
Download the current table or every table at once. Field names keep their original JSON keys.
Supported structures
Top-level arrays, objects with arrays at any path (data.list, data.raw.listv2), and object fragments missing outer braces (auto-repaired).
Nested arrays
Array fields inside a row are written to a cell as a JSON string — they are never expanded into new tables or columns.
FAQ
▸Is my data uploaded anywhere?
No. All parsing, preview, and export happen locally in your browser. Your JSON is never sent to a server.
▸What is the file size limit?
5 MB per input. Larger inputs are rejected before parsing — split your JSON or reduce the data size.
▸Do you support JSON5 (single quotes, comments, trailing commas)?
No. Only standard JSON is supported. Non-standard input is reported as invalid with correction guidance.
▸Are nested objects flattened?
Yes. Nested objects are flattened into dot-path columns such as userInfo.contact.email.
▸Are nested arrays expanded into new tables?
No. Arrays inside a row are written to a single cell as a JSON string and are not expanded.
▸Can I convert multiple arrays at once?
Yes. Every array found under object paths becomes its own tab; you can download them all into one XLSX.
▸Why does it say no list was found?
Your JSON contains no arrays. Only arrays can be turned into tables — plain objects are not shown as a single row.
▸What is the difference between CSV and XLSX?
CSV is a single-table text file. XLSX is a spreadsheet workbook; multiple tables can be exported as separate sheets in one file.