Convert ACCDB to XLSX
Upload a .mdb or .accdb or .mde file and get back a XLSX file. Types are preserved rather than flattened to text. Free, no registration, up to 10MB.
Click to upload or drag and drop
CSV, Excel, SQLite, SQL, DBF (max 10 MB)
How your data is typed in XLSX
Generated from the converter's own XLSX type mapping — this is what it actually emits, not an example.
| Your data | XLSX type |
|---|---|
| Whole number | number |
| Decimal (money) | number |
| Floating point | number |
| True / false | boolean |
| Date | date |
| Date and time | date |
| Short text | text |
| Long text | text |
| Binary data | hex text |
Working from an .accdb file
An .accdb file uses ACE, the engine that replaced Jet from Access 2007 onward. It adds attachment and multi-value fields that have no equivalent in any relational target, so it is worth knowing what happens to them before you convert.
- →Ordinary tables and columns convert exactly as they do from .mdb - the reader is the same one.
- →Attachment and multi-value fields have no relational equivalent and no type of their own here: they fall back to text columns rather than stopping the conversion.
- →ACE supports a genuine database password, and there is no way to supply one to the reader - remove the password in Access before uploading.
- →The recognised Access extensions are .mdb, .accdb and the compiled .mde. A compiled .accde front-end is not among them, so upload the .accdb it was built from.
Sheet names and cell types
The workbook is generated rather than exported out of Excel, so every choice in it is one the converter made. The two that show up the moment you open the file are what the sheet is called and what type each cell turned out to be.
- →The sheet takes the table's name cut to 31 characters, which is Excel's own limit for a tab, while the workbook file keeps the name in full - so a long table name is complete in the file name and shortened on the tab inside it.
- →Dates and timestamps become genuine date cells, formatted yyyy-mm-dd and yyyy-mm-dd h:mm:ss, rather than strings that merely look like dates. Sorting and date arithmetic work on them with no conversion step first.
- →A text column of digits stays text: a value like 01234 is written into a string cell, and Excel shows it as it was stored instead of dropping the zeros the way it does when the same data is opened from a CSV.
Reading ACCDB
- →Dates are exported in ISO form, avoiding the ambiguous 12/02/21 that Access tools produce by default.
- →NULL and the empty string stay distinct.
- →Access can hold dates outside the range it can represent. Those become NULL and the conversion tells you, rather than dropping them silently.
- →Requires mdbtools on the server; if it is unavailable you get a clear error rather than a partial conversion.
Writing XLSX
- →One file per table. Booleans stay booleans and numbers stay numbers.
- →Excel has no fixed-point type, so decimals become numbers — use a database target if exactness matters.
What you get
A ZIP containing <table>.xlsx. If anything about your data needed a judgement call, a _warnings.txt explains it.
Questions
- Is converting ACCDB to XLSX free?
- Yes. Files up to 10MB convert free with no account. There is a limit of five conversions per day per IP address.
- Will my ACCDB data keep its types in XLSX?
- Yes — that is the point. Whole numbers, decimals, dates and booleans are mapped to real XLSX types rather than everything becoming text. The mapping table above shows exactly what you get.
- Do you store my file?
- No. The file is written to a temporary directory, converted, and the directory is deleted as soon as your download has been sent.