Is converting CSV to SQLite 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 CSV data keep its types in SQLite?

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

Upload a .csv or .tsv file and get back a SQLite file. 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 SQLite

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

Your data	SQLite type
Whole number	BIGINT
Decimal (money)	NUMERIC(10,2)
Floating point	REAL
True / false	BOOLEAN
Date	DATE
Date and time	TIMESTAMP
Short text	TEXT
Long text	TEXT
Binary data	BLOB

Working from a .csv file

A CSV file carries no header describing itself, so everything about it - the separator, the encoding, whether an empty field means nothing or means zero - has to be worked out from the bytes. That is where the risk in this conversion lives.

→The separator is sniffed from the first 4 KB across comma, semicolon, tab and pipe, so a semicolon-separated file saved by Excel in a European locale needs no setting.
→The UTF-8 byte-order mark Excel writes is stripped before the header row is read, so your first column is not named with an invisible character in front of it.
→Types are decided from the first 10,000 data rows. A value further down that contradicts the type it settled on becomes NULL rather than failing the whole file.
→The table is named after the file, with spaces and hyphens replaced by underscores: sales report.csv becomes sales_report.

What the .sqlite file looks like inside

The output here is a real database rather than a script, so the interesting question is not how to load it but what SQLite did with the types on the way in. Its storage classes are looser than the declarations the file ends up carrying.

→Names are carried over exactly as they were, with none of the sanitising the script targets apply: a table called Sales Report keeps its space and a column called Order ID keeps its own, so your queries have to quote them.
→Underneath the declared types sit only five storage classes, and NUMERIC affinity - what a decimal column gets - is the loosest of them: it normalises inserted text to whatever a plain INTEGER or REAL column would hold. The precision and scale in the schema are for a human reading it, not a guarantee SQLite enforces on the bytes; the Writing notes below cover what that means for money specifically.
→Declared type and stored type are different things here: a BOOLEAN column holds the integers 1 and 0, and a DATE column holds ISO text, because those are the storage classes SQLite actually has. Every client reads them back the same way.

Reading CSV

→Leading zeros are preserved. A column containing 01234 is kept as text, never turned into the number 1234.
→An empty cell becomes NULL, not an empty string — the two mean different things once the data is in a database.
→Dates are only treated as dates when the format is unambiguous. 03/04/2025 could be March 4th or April 3rd, so it stays text unless another value in the column settles it.

Writing SQLite

→Columns get real declared types rather than everything being TEXT.
→Primary keys and NOT NULL constraints are preserved.
→A money column is declared NUMERIC(10,2), but that declaration does not stop SQLite’s own numeric affinity from converting the inserted value into a float once it lands, so 19.99 can come back with a rounding tail. Pick the DuckDB target instead when the exact decimal has to survive.

What you get

A ZIP containing database.sqlite. If anything about your data needed a judgement call, a _warnings.txt explains it.

Questions

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