How to Convert an API Response (JSON) to Excel

Last updated: 6 June 2026

API responses are built for machines, not spreadsheets. When you need to share a REST response with a teammate, audit it, or hand it to someone in Excel, copying JSON by hand is painful. This guide shows how to turn any JSON API response into a clean spreadsheet in a few seconds - free, with no signup, and processed entirely in your browser.

Step-by-step

Copy the JSON response from your API client, browser, or terminal (or save it as a .json file).
Open the converter and either paste the JSON into the Paste tab or drop the .json file (up to 15 MB).
Preview the first rows to confirm the columns look right.
Click Download Excel and open the .xlsx in Excel, Google Sheets, or LibreOffice.

Wrappers are detected automatically

Most APIs don't return a bare list - they wrap it, for example { "data": [ {...}, {...} ], "meta": {...} }. The converter finds the main record array (common keys include data, results, items, records, and others) and turns it into rows, ignoring pagination and metadata around it. Envelopes like data.items are handled when records live one level down.

Nested fields become columns

API objects are usually nested. By default (Separate columns mode) nested paths become dotted headers such as customer.address.city, which you can filter and pivot in Excel. Prefer to keep a subtree intact? Switch to JSON in one cell and each nested object stays as JSON text in a single cell. Lists of simple values become a comma-separated cell; lists of objects are kept as JSON text so your row count stays predictable.

Tips for clean output

Keep long IDs (order IDs, user IDs) as quoted strings in the JSON so Excel doesn't round them - the converter is bigint-safe and preserves them either way.
For paginated endpoints, combine the pages into one array, or convert each page and stack them in Excel.
Large response? Filter fields at the API (most support a fields parameter) before exporting.

Private by design

Conversion runs in your browser, so a response containing tokens, emails, or customer data never leaves your device and is never uploaded to a server. That makes it safe to convert sensitive API output.

Related guides

See all guides or the FAQ.

Open the free JSON to Excel converter →