Convert Excel to Parquet — Free, Private, In-Browser
Convert Excel to Parquet right in your browser. Excel is Excel .xlsx workbooks — the format analysts and business stakeholders live in; Parquet is a columnar binary format built for analytics — compressed, strongly typed, and splittable. This tool reads your Excel file with DuckDB-WASM and writes Parquetlocally — your data never leaves your machine, and there’s no upload, account, or size cap beyond your browser’s memory.
Parquet is columnar, compressed and strongly typed, so the output is usually several times smaller and much faster to scan.
Drop a Excel file below to preview its schema and download it as Parquet. Because everything runs client-side, it works offline and keeps even sensitive data private.
Drop a file or click to browse
Drop a Excel file — processed locally, never uploaded
Frequently asked questions
- Is my file uploaded anywhere?
- No. The Excel→Parquet conversion runs entirely in your browser via DuckDB-WASM. Your file never leaves your device.
- How large a file can I convert?
- It's bounded by your browser's available memory rather than any server limit — files in the hundreds of MB are routine. DuckDB runs single-threaded here, so very large files just take a little longer.
- Do I need an account?
- No — it's free and requires no sign-up.
Do more with your Excel file
- Parquet InspectorRead a Parquet file's schema, row groups, compression & column stats.
- Warehouse DDLGenerate Snowflake/BigQuery/Redshift CREATE TABLE & load commands.
- dbt generatorGenerate a dbt sources.yml, staging model & schema.yml from a schema.
- Data profilePer-column null %, distinct counts, min/max & median.