Free Data Tools CSV, Excel, Parquet & JSON Toolkit
Convert between CSV, Excel, Parquet, and JSON. Filter rows, remove duplicates, and clean messy datasets — all offline on your computer with no row limits.
Parquet Conversion
CSV to Parquet
Compress CSVs into efficient columnar Parquet — 5-10× smaller and faster for analytics.
Learn more →Parquet to CSV
Open Parquet files in Excel or any spreadsheet by converting them to CSV first.
Learn more →Excel to Parquet
Convert XLSX directly to Parquet for data lakes, BigQuery, or Snowflake ingestion.
Learn more →Parquet to Excel
Bring Parquet data into Excel with one click. Preserves types where possible.
Learn more →Cleaning & Filtering
Clean Data
Trim whitespace, normalize casing, fix encoding, and remove empty rows in one pass.
Learn more →Filter CSV
Filter CSV rows by column conditions without loading them into Excel or writing SQL.
Learn more →Remove Duplicates
Find and remove duplicate rows by all columns or a chosen key. Preview before saving.
Learn more →How FileHop Compares
| Feature | CloudConvert | Convertio | FileHop |
|---|---|---|---|
| Privacy | Cloud upload | Cloud upload | 100% local |
| Row Limits | Capped | Capped | None |
| Offline Support | No | No | Yes |
| Price | $9/mo | $10/mo | Free |
Ready to Wrangle Data Offline?
Download FileHop and convert, clean, and filter datasets without uploading a single row.
Frequently Asked Questions
Are FileHop's data tools really free?
Yes. All data tools are free with no row limits, no watermarks, and no daily usage caps.
Do my datasets get uploaded to a server?
No. Every conversion runs locally on your computer. Your data never leaves your device.
Can I convert large CSV or Parquet files offline?
Yes. All data tools work completely offline and can handle multi-gigabyte files limited only by your disk and RAM.
What's the maximum file size?
There is no built-in limit. FileHop streams large files where possible, so you're bounded by your machine, not by us.
Why convert CSV to Parquet?
Parquet is columnar and compressed — typically 5-10× smaller than CSV and far faster to query in tools like DuckDB, Spark, or BigQuery.
Can I open Parquet files in Excel?
Excel doesn't natively support Parquet. Use FileHop's Parquet to Excel or Parquet to CSV tools to open them in any spreadsheet app.
Which platforms are supported?
FileHop is available for macOS and Windows. Download the version for your operating system.
How does FileHop compare to CloudConvert or Convertio?
Unlike cloud-based converters, FileHop processes everything locally — faster, more private, with no row limits or upload waits.