DuckDB Playground

Run SQL against a live DuckDB-WASM engine with sample datasets, CSV/JSON import, schema browser and exports.

SQL & DBBrowser workspace

Free to use. No account, no daily limit, and no backend processing for tool input.

What is DuckDB Playground?

DuckDB Playground is a free, browser-based tool that helps you get the job done quickly. Run SQL against a live DuckDB-WASM engine with sample datasets, CSV/JSON import, schema browser and exports. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

How to use DuckDB Playground

1Paste or drop your data into the workspace.
2Adjust the available options to suit your data.
3Copy or download the result — it never leaves your browser.

Features

Fast, focused, and easy to use
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Drafting and checking queries without a database connection
Quick one-off data jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Database administrators
Backend developers
Data engineers
Students

Common errors

Input is copied from a source with hidden whitespace or encoding issues.
The result is not reviewed before being reused elsewhere.
The wrong options are selected for the target workflow.
The original data is not kept for comparison.

How it works

1Accepts the input for DuckDB Playground.
2Runs the operation in the browser.
3Returns a result you can copy, download, or continue using.

Recommended workflow

1
Prepare the input
Use this tool as the focused step in a larger browser-based workflow.
2
Run DuckDB Playground
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
DuckDB SQL Engine: Run SQL queries against CSV files entirely in your browser — no server, no upload.
Open tool
4
Then continue with
SQL Formatter: Token-based SQL formatter (dialect-aware).
Open tool
5
Then continue with
SQL Syntax Validator: Lint SQL syntax across dialects.
Open tool

Frequently asked questions

How do I use DuckDB Playground?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Run SQL against a live DuckDB-WASM engine with sample datasets, CSV/JSON import, schema browser and exports.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is DuckDB Playground free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Do I need to install anything?: No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.

DuckDB Playground

ReadyHow to use

Run SQL against a live DuckDB-WASM engine with sample datasets, CSV/JSON import, schema browser and exports.

SQL & DBBrowser workspace

Free to use. No account, no daily limit, and no backend processing for tool input.

Dialect

Row limit

Schema side-panel

Workspace

Sample datasetsone-click load, all in-browser

CSV / JSON / Parquet

Drag CSV, TSV, JSON or Parquet files here, or click “+ Add file” — each becomes a queryable table

SQL QuerySQL30bytes·1lines

Tip: Ctrl+Enter / Cmd+Enter runs the query.

Click a sample dataset above (or drop a file) and run a query to get started. Sample data is auto-loaded on first run.

What is DuckDB Playground?

How to use DuckDB Playground

1Paste or drop your data into the workspace.
2Adjust the available options to suit your data.
3Copy or download the result — it never leaves your browser.

Features

Fast, focused, and easy to use
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Drafting and checking queries without a database connection
Quick one-off data jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Used by

Database administrators
Backend developers
Data engineers
Students

Common errors

Input is copied from a source with hidden whitespace or encoding issues.
The result is not reviewed before being reused elsewhere.
The wrong options are selected for the target workflow.
The original data is not kept for comparison.

How it works

1Accepts the input for DuckDB Playground.
2Runs the operation in the browser.
3Returns a result you can copy, download, or continue using.

Recommended workflow

1
Prepare the input
Use this tool as the focused step in a larger browser-based workflow.
2
Run DuckDB Playground
Review the preview, copy or download the result, and keep everything local in your browser.
3
Next recommended tool
DuckDB SQL Engine: Run SQL queries against CSV files entirely in your browser — no server, no upload.
Open tool
4
Then continue with
SQL Formatter: Token-based SQL formatter (dialect-aware).
Open tool
5
Then continue with
SQL Syntax Validator: Lint SQL syntax across dialects.
Open tool

Frequently asked questions

How do I use DuckDB Playground?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Run SQL against a live DuckDB-WASM engine with sample datasets, CSV/JSON import, schema browser and exports.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is DuckDB Playground free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Do I need to install anything?: No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.

What is DuckDB Playground?

How to use DuckDB Playground

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run DuckDB Playground

Next recommended tool

Then continue with

Then continue with

Frequently asked questions

What is DuckDB Playground?

How to use DuckDB Playground

Features

Common uses

Used by

Common errors

How it works

Recommended workflow

Prepare the input

Run DuckDB Playground

Next recommended tool

Then continue with

Then continue with

Frequently asked questions