CSV · TSV · Delimited → SQL

Turn massive data files into clean, ready-to-run SQL.

Drop a file and get a tidy CREATE TABLE + INSERT script with smart type inference, primary keys, and full schema control — for Postgres, MySQL, SQL Server & SQLite. Built for big, real-world database loads.

Drop your CSV or TSV here
Choose a file...

🔒 Your file is processed right in your browser — nothing is ever uploaded, stored, or retained. We never see your data.

PostgreSQLMySQLSQL ServerSQLite
Nothing uploaded or stored · Runs in your browser · Millions of rows · No sign-up to try
Built to handle 1,000,000+ rows.

We ran a full million-row file end to end — clean schema, every row in place, and a valid script ready to import. Big, heavy data loads are exactly what SQLified is for.

Everything you need to load real data

A serious converter for people who move big data on a schedule.

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Handles millions of rows

Turns huge files into valid, ready-to-import SQL in a single pass.

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Smart type inference

Detects INTEGER, BIGINT, NUMERIC, DATE/TIMESTAMP, BOOLEAN & TEXT from your data.

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Four SQL dialects

Postgres, MySQL, SQL Server & SQLite — correct types & quoting for each.

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Importable output

Clean CREATE TABLE + INSERT scripts that load without surprises.

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Full schema control

Override inferred types, rename columns, set primary keys & nullability.

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Nothing leaves your machine

Files are processed in your browser, in memory, and discarded when you're done — never uploaded or retained.

How SQLified works

From raw file to importable SQL in three steps — no upload, no sign-up to try.

1

Drop your file

Add a CSV, TSV, pipe- or semicolon-delimited file. SQLified auto-detects the delimiter and reads the file locally in your browser — nothing is uploaded.

2

Review the schema

It samples your rows and infers each column's type — INTEGER, BIGINT, NUMERIC, DATE, BOOLEAN, TEXT. Rename columns, override types, and set primary keys or nullability.

3

Pick a dialect & download

Choose Postgres, MySQL, SQL Server, or SQLite and download a .sql file — CREATE TABLE plus batched INSERTs, ready to run against your database.

Most free converters are built for tiny, one-off files and fall over somewhere around a hundred thousand rows — the browser tab freezes, or the exported script errors halfway through the import. SQLified is built the other way around: for the recurring, production-scale loads that data teams, analysts, and developers actually run. It streams through large files in a single pass and emits SQL that respects each engine's real limits.

Built for the loads that break other tools

SQL Server rejects any single INSERT with more than 1,000 value rows, and MySQL refuses statements that exceed max_allowed_packet. SQLified batches its output automatically — a fresh INSERT every 1,000 rows by default, and hard-clamped to SQL Server's limit — so a two-million-row export imports cleanly instead of failing at row 1,001. Type inference is tuned for messy real-world data too: it distinguishes INTEGER from BIGINT by value range, keeps decimal scale intact for currency, and recognizes dates, booleans, and percentages.

Popular converters

Jump straight to the format and database you're loading — each with worked examples, type mapping, and the gotchas that break big imports.

CSV to SQLThe hub — pick any dialectCSV to PostgreSQLCOPY vs INSERT, managed PostgresCSV to MySQLBackticks, auto-increment keysCSV to SQL ServerBatched under the 1,000-row limitCSV to SQLiteType affinity, serverlessTSV to PostgreSQLTab-delimited, auto-detectedTSV to MySQLTabs → MySQL, batchedTSV to SQL ServerTabs → T-SQL, 1,000-row safePipe-delimited to SQL| separator, legacy exportsSemicolon-delimited to SQLEuropean-style CSV (;)
Browse all converters →

Free to start. Pro for the heavy loads.

Try it on real files for free. Upgrade when you need production-scale output.

Free
$0
  • Convert real files in-browser
  • All four SQL dialects
  • Type inference & schema control
  • Up to 5,000 rows per file
Pro
$9.99 /mo
  • 1,000,000+ rows per file
  • Built for monthly bulk loads
  • Priority processing · no ads
  • Everything in Free

Frequently asked questions

Everything you need to know about converting data files to SQL.

What is SQLified?
SQLified is a browser-based tool that turns delimited data files — CSV, TSV, pipe- or semicolon-separated — into clean, ready-to-run SQL. For each file it generates a CREATE TABLE statement plus batched INSERT statements, with column types inferred automatically. It's built for real, large database loads: files with hundreds of thousands or millions of rows that browser converters usually choke on.
How do I convert a CSV to SQL?
Drop your CSV (or TSV, pipe, or semicolon file) onto the converter. SQLified parses the header row into columns, samples the data to infer each column's type, and shows you an editable schema. Choose your target database, adjust any types or primary keys if you want, then download a .sql file containing CREATE TABLE and INSERT statements you can run directly in your database.
Which databases and formats does it support?
Four SQL dialects: PostgreSQL, MySQL, SQL Server (T-SQL), and SQLite — each with the correct data types, identifier quoting, and batching rules for that engine. On the input side it handles comma (CSV), tab (TSV), pipe (|), and semicolon (;) delimited files, and auto-detects the delimiter for you.
Is my data uploaded anywhere?
No. Conversion happens entirely in your browser — your file is read into memory locally, converted on your own machine, and never sent to a server. We never see, store, or transmit your data. That makes SQLified safe to use even with sensitive or proprietary datasets.
How large a file can it handle?
SQLified is built for big loads — we've run full million-row files end to end and produced valid, importable scripts. The free tier converts up to 5,000 rows per file so you can try it on real data; Pro removes the cap for production-scale loads of 1,000,000+ rows.
How does type inference work?
SQLified samples your rows and detects the tightest sensible type for each column — INTEGER vs BIGINT by value range, NUMERIC/DECIMAL with the right scale, DATE vs TIMESTAMP, BOOLEAN, and TEXT/VARCHAR for everything else. It also recognizes currency and percentage formatting. Every inferred type is editable before you export, and you can set primary keys and nullability per column.
Why do big INSERT scripts break in other tools?
Two common reasons: SQL Server caps a single INSERT at 1,000 value rows, and MySQL rejects statements larger than max_allowed_packet. SQLified batches its INSERT output automatically — a fresh INSERT every 1,000 rows by default, and hard-clamped to SQL Server's limit — so even very large exports import cleanly instead of erroring halfway through.
What's the difference between Free and Pro?
Free converts up to 5,000 rows per file across all four dialects with full schema control, and is ad-supported. Pro ($9.99/mo) removes the row cap for 1,000,000+ row files, is built for recurring monthly bulk loads, and removes ads. All the conversion logic and dialect support is the same either way.

Got a big file to load?

Drop it in and watch SQLified turn it into clean, ready-to-run SQL.

Drop your CSV or TSV here
Choose a file...

🔒 Processed in your browser — nothing uploaded, stored, or retained.