Convert each sheet in an Excel file to a separate JSON file

Shiji Pan

1 year ago

Want to convert each sheet data in an Excel file to a separate JSON file at one time?

Try Withdata Data File Converter, an Excel to JSON converter for Windows, MacOS, and Linux, Batch convert Excel sheets to JSON, Easy and Fast.

Can run in GUI mode, Step by Step, just a few mouse clicks.
Can run in Command line, for Scheduled Tasks and Streams.
Convert files locally and privately, avoid uploading large Excel file(s) to online services.

Convert each sheet data in an Excel file to a separate JSON file

Click “Start a New Convert” at task dialog.

then show the wizard.

Select From “File” “Excel” To “Files” “JSON”.

List selected sheets.

After converting, you can view output JSON files.

You can schedule and automate this Excel sheet to JSON converting task by:

Withdata DataFileConverter is a data file converter, it can convert each Excel sheet to a separate JSON file. Download Withdata DataFileConverter

DataFileConverter works fast. It convert millions of rows within a minute.

Of course! DataFileConverter convert each Excel sheet to a separate JSON file locally, absolutely safe.

Yes, you can. DataFileConverter has Linux, Mac OS, and Windows version.

Yes, you can. DataFileConverter can running in command line, on Linux, Mac OS, and Windows.

Value kind	in EXCEL	in JSON
Int	`1234 (a real numeric cell)`	`1234 (number)`
Bigint	`9007199254740993 (exact only while the cell stays text)`	`9007199254740993`
Decimal	`1234.56 (numeric cell, format controls the displayed decimals)`	`1234.56 (number)`
Float	`1.234E+10 (numeric cell)`	`1.234e10 (number)`
Text	`text cell; leading zeros survive only if the column is text`	`"text" (string)`
Long text	`text cell; wraps inside the cell rather than the row`	`"multi-line\ntext" (escaped newline inside a string)`
Date	`a serial number plus a date cell format`	`"2026-09-18" (string)`
Datetime	`a serial number plus a date-time cell format`	`"2026-09-18T14:30:00Z" (string)`
Binary	`not representable as data`	`"base64:..." (string)`
Boolean	`TRUE / FALSE (a real boolean cell)`	`true / false (boolean)`
JSON	`a text cell; the quotes are part of the value`	`nested object or array, kept as structure`

Both EXCEL and JSON are file formats, so what differs below is how each one chooses to represent a value.

Property	in EXCEL	in JSON
identifiers	`Not applicable; a cell holds exactly one value`	`Double quotes; backslash escapes`
dates	`Stored as a serial number; only the cell format makes it lo...`	`No date type: dates arrive as strings and the reader must p...`
binary	`Only as text or an embedded object, not as a data column`	`Not supported natively - base64 inside a string`
separator	`Cells, not delimiters`	`Braces and commas`
encoding	`UTF-8 internally, declared in the package`	`UTF-8 by definition`
typing	`Real cell types: text, number, date, boolean, error`	`string, number, boolean, null, object, array - no date type`
shape	`Multiple sheets, each a flat grid`	`Nested objects and arrays`
ceiling	`1,048,576 rows x 16,384 columns per sheet; 255 sheets per w...`	`Whole document is usually parsed into memory`

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