SQL Data Type Mapper

Paste column definitions (one per line: name TYPE) and convert them to another dialect. Runs entirely in your browser.

How to use:

  1. Paste your column definitions (name TYPE per line)
  2. Select your target SQL dialect
  3. Click "Convert Types" to map all columns
  4. Copy the converted types for your migration

Columns (name TYPE per line)

Converted

Converted columns will appear here.

Unrecognized types are passed through unchanged — extend the type list in the source for anything specific to your schema.

SQL Formatter

Beautify messy SQL into clean, readable queries instantly.

CSV to SQL

Turn pasted CSV data into ready-to-run INSERT statements.

JSON ↔ SQL

Convert JSON arrays to SQL and SQL results back to JSON.

JOIN Visualizer

See how INNER, LEFT, RIGHT, FULL & CROSS joins differ.