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Spreadsheet tool
Turn JSON arrays into CSV tables or parse CSV into clean JSON objects.
JSON ↔ CSV Converter transforms arrays of JSON objects into CSV tables and CSV rows back into JSON objects — useful for APIs, mock data, no-code tools, and analytics pipelines. Conversion runs in the browser for private, copy-paste-friendly workflows.
JSON is hierarchical; CSV is rectangular. The converter expects an array of similar objects (or a single object) so keys become column headers and each object becomes a row. Nested objects are stringified so they still fit in a cell; for deep trees you may want to flatten fields in code first.
Going CSV → JSON rebuilds an array of objects keyed by the header row. Empty cells become empty strings. Consistent headers and UTF-8 encoding make the round trip predictable for developers and analysts alike.
Paste small payloads for quick experiments, or upload files for larger tables. After conversion, validate JSON in a formatter or load CSV into the viewer if you need a visual grid check.
Spreadsheet tools on ezToolFlow process CSV/Excel-style data in the browser when possible. Prefer UTF-8 CSV for best compatibility.
Paste an array of objects or upload a .csv / .json file. Prefer UTF-8 text without a BOM when possible.
JSON → CSV builds headers from object keys. CSV → JSON maps each row to an object using the first row as keys.
Take the result into your API client, database import, or spreadsheet. Fix nested fields offline if you need true nested JSON again.
Turn a JSON list from an endpoint into CSV for product or ops review.
Convert a CSV of fixtures into JSON for tests, Storybook, or local mocks.
Bridge Zapier/Make exports (CSV) with tools that expect JSON arrays.
Quick answers about tools, privacy, limits, and pricing.
About 20 MB is recommended so the browser stays responsive. Very large sheets may freeze on low-memory devices.
An array of objects with similar keys, for example [{"id":"1","name":"Ada"}, …]. A single object is treated as one row. Arrays of primitives become a single value column.
Nested values are JSON-stringified into the cell so the table stays flat. Flatten keys yourself if you need separate columns for nested fields.
Conversion is designed to run locally in the browser. Avoid pasting secrets you would not store in a local file anyway.
Headers are collected from keys present in the objects. Objects missing a key get empty cells; keys that never appear in any object will not create a column.
This tool targets comma-separated CSV. Convert TSV to CSV in an editor or spreadsheet first if your source uses tabs.
Column order follows the order keys are first discovered across the array. Keep a stable key order in your source JSON if you care about column sequence.
Yes. JSON ↔ CSV Converter is free to use on ezToolFlow. Guests and free accounts may have daily limits on some tools; premium tiers can raise or remove those limits. AI tools may also spend credits.
For browser-based tools, processing runs on your device when possible and files are not uploaded for conversion. Optional accounts, usage limits, and AI features are described in our Privacy Policy.
No for most tools — you can start as a guest. An account helps keep higher daily limits and saved work (for example AI resumes).
Keep working with similar free tools — no signup required for most.
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