Excel to JSON Converter

Excel to JSON Converter is a free online Spreadsheet Tools tool that convert an .xlsx, .xlsm or .xls workbook to JSON in your browser — a lossless table dump of the first sheet (header row included), a live preview of every sheet, correct UTF-8, and the file is never uploaded instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

How to use: Excel to JSON Converter →

Description

Convert an .xlsx, .xlsm or .xls workbook to JSON in your browser — a lossless table dump of the first sheet (header row included), a live preview of every sheet, correct UTF-8, and the file is never uploaded.

  • Because everything is computed client-side, Excel to JSON Converter is safe to use with sensitive data such as API keys, tokens or private logs.

How to use

Using Excel to JSON Converter takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.

Use cases

Common situations where Excel to JSON Converter helps:

  • Convert an .xlsx, .xlsm or .xls workbook to JSON in your browser — a lossless table dump of the first sheet (header row included), a live preview of every sheet, correct UTF-8, and the file is never uploaded.
  • Because everything is computed client-side, Excel to JSON Converter is safe to use with sensitive data such as API keys, tokens or private logs.

FAQ

What is Excel to JSON Converter?

Excel to JSON Converter convert an .xlsx, .xlsm or .xls workbook to JSON in your browser — a lossless table dump of the first sheet (header row included), a live preview of every sheet, correct UTF-8, and the file is never uploaded. It runs entirely in your browser, so your data stays private.

Is Excel to JSON Converter free to use?

Yes. Excel to JSON Converter is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

Related tools

Excel to CSV ConverterConvert an .xlsx, .xlsm or .xls workbook to RFC 4180 CSV with correct UTF-8 — commas and quotes are escaped by doubling, every sheet is previewed, no upload and no sign-up.CSV to XLSX ConverterPaste CSV, TSV, semicolon or pipe text and download a real .xlsx — quotes, CRLF and UTF-8 handled, delimiters auto-sniffed (TAB ; , |) or set by hand, decimal commas preserved, nothing uploaded.JSON to XLSX ConverterPaste a JSON array of objects or rows and get a real .xlsx — header from the key union, numbers stay numeric, mixed shapes are refused not guessed, all in your browser.Base64 EncoderEncode text, JSON, URLs or files to Base64, standard or URL-safe.URL EncoderPercent-encode URLs or single query components.Base64 DecoderDecode Base64 (standard or URL-safe) back to text or bytes.