Want to import data from JSON file to Access ?
Try Withdata FileToDB, a desktop to Access converter for Windows, MacOS, and Linux, Convert to Access, 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 locally and privately, avoid uploading large or private file(s) to online services.
Import data from JSON file to Access in 4 steps
Login to Access -> Choose JSON file -> Set Access table -> Import JSON to Access
Choose Access and logon.
Click “Wizard – 1 File To 1 Table” at task dialog.
Select the “JSON” file type.
then show the wizard.
Step #1. Open a JSON file.
Step #2. Choose a Access table and config fields.
Step #3. Preview data.
Step #4. Import JSON to Access.
Import JSON to Access in command line
Save session, and then create .bat file for Windows command line, or .sh file for Linux / macOS.
Set scheduled tasks for importing JSON to Access
You can schedule and automate this “JSON to Access” conversion task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for ” to Access” conversion.
- Set scheduled task for ” to Access” conversion.
More about Withdata FileToDB – JSON to Access converter
Download Withdata FileToDB
JSON → Access reference
Type mapping
| Value kind | in JSON | in Access |
|---|---|---|
| Int | 1234 (number) | Long Integer |
| Bigint | 9007199254740993 | Long Integer |
| Decimal | 1234.56 (number) | Decimal |
| Float | 1.234e10 (number) | Double |
| Text | "text" (string) | Text(n) |
| Long text | "multi-line\ntext" (escaped newline inside a string) | Long Text |
| Date | "2026-09-18" (string) | Date/Time |
| Datetime | "2026-09-18T14:30:00Z" (string) | Date/Time |
| Binary | "base64:..." (string) | OLE Object |
| Boolean | true / false (boolean) | Yes/No |
| JSON | nested object or array, kept as structure | Long Text |
Dialect differences
JSON is a file format and Access is a database server, so the target has to be told the types the file never carried - the rows below are where the two sides diverge.
| Property | in JSON | in Access |
|---|---|---|
| port | — | (file-based) |
| identifiers | Double quotes; backslash escapes | [square brackets] |
| row limit | — | SELECT TOP n |
| dates | No date type: dates arrive as strings and the reader must p... | Date/Time |
| long text | — | MEMO |
| binary | Not supported natively - base64 inside a string | OLE Object |
| separator | Braces and commas | — |
| encoding | UTF-8 by definition | — |
| typing | string, number, boolean, null, object, array - no date type | — |
| shape | Nested objects and arrays | Tables of rows and columns |
| ceiling | Whole document is usually parsed into memory | — |
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.
