Quick tools · Loam-backed analysis

Open, inspect, and convert CSV files

Open files up to 50 MB for a quick table view, or use Loam-backed SQL analysis for CSV and Parquet files up to 5 GiB. You can also merge, compress, and convert CSV files with focused tools.

Drop a .csv file hereOr choose a file up to 50 MB for the quick viewer. For larger files, use Loam-backed SQL analysis on the CSV Viewer page.Choose CSV

CSV tools

Choose the job you need to do

CSV file viewerQuickly inspect files up to 50 MB, or analyze files up to 5 GiB with Loam.Sample CSV filesDownload or inspect three documented fictional datasets.Compress CSV filesCreate a byte-exact .csv.gz file with native gzip.Merge CSV filesCombine matching files or explicitly union different headers.CSV to JSONCreate an indented array of objects with stable keys.CSV to TSVCreate safe tab-separated text with correct quoting.CSV to ExcelCreate a real .xlsx workbook while preserving text values.CSV to ParquetCreate a real columnar Parquet file with string columns.