Data | Convert
Convert JSON to Excel online
Convert JSON arrays or objects to XLSX in your browser, with intelligent flattening of nested structures.
JSON to Excel converts JSON arrays or objects into an XLSX workbook with rows, columns, and correct data types. Conversion happens locally in the tab, so no data leaves your device. Use JSON to Excel to convert JSON data into Excel spreadsheets in seconds, straight from your browser.
- Free to use
- No signup
- No uploads
- Works offline
Why use JSON to Excel
- Flattens nested objects to columns
- Preserves numeric and date types
- Handles arrays as multiple rows
- Files never leave your device
Conversion runs locally in your browser. Nothing is uploaded.
How to use JSON to Excel
- Paste or upload JSON Provide the JSON payload.
- Preview the sheet Confirm rows and columns look right.
- Download the XLSX Save the Excel workbook.
Benefits
From API to spreadsheet
Turn any API response into a workbook stakeholders can filter and pivot without engineering help.
Private conversion
JSON stays on your device, which matters for API responses containing customer data.
Type-aware
Numbers, dates, and booleans keep their types so pivot tables and formulas work immediately.
Who it is for
Product managers
Sharing an API export with a non-technical team Outcome: Workbook ready for review and comments.
QA
Comparing JSON test payloads in a spreadsheet Outcome: Tabular diffs instead of raw JSON.
Analysts
Loading a webhook payload into Excel Outcome: Filterable table without a scripting step.
How it works
JSON to Excel reads the JSON structure in your browser, decodes its content into an in-memory representation, then re-encodes that data as Excel. Both the decode and encode steps of JSON to Excel run on your device, so nothing is transmitted and accuracy never depends on network conditions.
Frequently asked questions
Are nested objects flattened?
Yes. Nested objects flatten to dot-notation columns unless you export as raw.
How big can the JSON be?
Files up to about 50 MB convert comfortably in the browser; larger files may need a batching approach.
Are arrays turned into rows?
Top-level arrays become rows; nested arrays either flatten to columns or serialize as text.
Related tools
- Excel to JSON | Convert spreadsheet data to JSON format
- XML to JSON | Convert XML to JSON format
- YAML to JSON | Convert YAML to JSON format
Last updated: 2026-07-09