Is converting Microsoft Access to MariaDB 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 Microsoft Access data keep its types in MariaDB?

Yes — that is the point. Whole numbers, decimals, dates and booleans are mapped to real MariaDB 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.

Convert Microsoft Access to MariaDB

Upload a .mdb or .accdb or .mde file and get back a MariaDB SQL script you can load straight into your database. Types are preserved rather than flattened to text. Free, no registration, up to 10MB.

1Upload your file

Click to upload or drag and drop

CSV, Excel, SQLite, SQL, DBF (max 10 MB)

2Choose target format

How your data is typed in MariaDB

Generated from the converter's own MariaDB type mapping — this is what it actually emits, not an example.

Your data	MariaDB type
Whole number	BIGINT
Decimal (money)	DECIMAL(10,2)
Floating point	DOUBLE
True / false	TINYINT(1)
Date	DATE
Date and time	DATETIME
Short text	VARCHAR(255)
Long text	LONGTEXT
Binary data	LONGBLOB

Working from a Microsoft Access database

The reason people search for this one is usually not the file, it is the software. Converting here needs no copy of Microsoft Access, no Office licence and no Windows machine anywhere in the process.

→Reading happens on the server through the mdbtools utilities, so the ACE and Jet ODBC drivers are never involved: no "provider is not registered on the local machine", and no 32-bit versus 64-bit driver mismatch.
→You do not need Access at your end to check the result either. The preview lists the tables, columns and detected types before you download anything.
→Nothing is installed or run on your own machine, and the server's temporary copy of your database is deleted as soon as the download has been sent.

What MariaDB gets, and how it differs

MariaDB and MySQL are close enough here that one dialect serves both, and picking MariaDB does not select a different code path: the script is byte for byte the one a MySQL conversion produces. The differences worth flagging are in what you do with it.

→The README packed beside the script names both engines in its load command, because the invocation is the same either way - the file is piped into a client rather than executed by the server.
→The CREATE DATABASE line in that README asks for utf8mb4_unicode_ci and not for utf8mb4_0900_ai_ci, which is MySQL 8's default. MariaDB has never implemented the 0900 collations, and unicode_ci is the one both engines have.
→Date-and-time columns are declared DATETIME rather than TIMESTAMP, so what loads is the wall-clock value the source held. No session time zone is applied on the way in, and none is applied when you read it back out.

Reading Microsoft Access

→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 MariaDB

→Tables are created as InnoDB with utf8mb4, so emoji and CJK text survive the load.
→Backslashes are escaped, because MySQL treats them as escape characters by default.
→Text columns of unknown length become TEXT rather than a guessed VARCHAR that could truncate your data.
→Inserts are batched, and identifiers are capped at MySQL’s 64-character limit.

What you get

A ZIP containing dump.sql, plus a README with the exact command to load it. If anything about your data needed a judgement call, a _warnings.txt explains it.

Load this dump into MySQL or MariaDB:

  mysql -u USER -p DATABASE < dump.sql

Create the database first if it does not exist:

  mysql -u USER -p -e "CREATE DATABASE DATABASE CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"

Questions

Is converting Microsoft Access to MariaDB 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 Microsoft Access data keep its types in MariaDB?: Yes — that is the point. Whole numbers, decimals, dates and booleans are mapped to real MariaDB 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.