Browser Data Format Converter — CSV, Parquet, JSON, Excel, SAS, Stata, SPSS

PondPilot is the Swiss Army knife of data format conversion. Open a file in any supported format, optionally transform it with SQL, and export to any other format. It runs entirely in your browser — no uploads, no accounts, no servers.

Every Format Combination

Open: CSV, Parquet, JSON, Excel, DuckDB, SAS (.sas7bdat), Stata (.dta), SPSS (.sav)

Export to: CSV, Parquet, JSON, Excel

That’s dozens of conversion paths in a single tool. Instead of googling “SAS to CSV converter” or “Excel to Parquet online” and finding a different sketchy website each time — use one tool that handles everything.

Specific Converters

Looking for a specific conversion? Jump directly:

SQL-Powered Transformation

Every conversion goes through DuckDB’s SQL engine. That means you can clean, filter, reshape, and aggregate data between input and output:

SELECT customer_id, 
       SUM(amount) as total_spend,
       COUNT(*) as num_orders
FROM raw_data
WHERE status = 'completed'
GROUP BY customer_id

This is what separates PondPilot from a dumb file converter. You get a full analytics engine in the conversion pipeline.

How It Works

PondPilot runs DuckDB as WebAssembly. Statistical formats are handled by duckdb-read-stat, maintained by the PondPilot team. Everything processes in your browser — files never leave your machine.

Open Source and Free

No freemium, no row limits, no “upgrade to export.” PondPilot is open source and free to use. Visit app.pondpilot.io and start converting.

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