Free tools · No installation
Open, inspect, and convert CSV files
Open CSV files as readable tables. Edit, clean or combine your data, or upload a batch to convert it to Parquet.
Open and edit CSV
Start with your CSV
Open your file in the CSV editor with this tool already selected. Preview the result before downloading.
- Choose one CSV or TSV file.
- Edit cells, filter or sort your table.
- Download the complete edited file.
Free · No signup · File contents stay in your browser. Open files up to 1 GiB with browser storage.
Try a small example
3 records · 3 columns| id | name | amount |
|---|---|---|
| 1 | Example one | 12 |
| 2 | Example two | 24 |
| 3 | Example three | 18 |
Illustrative fictional data. Open the sample to try the tool.
CSV tools
Choose the job you need to do
Open and inspect
View, edit, check and understand your data.
Free CSV File Viewer OnlineView CSV in a virtualized browser workspace with local paged storage. Inspect rows and columns, edit values and download a copy.Edit CSV files onlineEdit CSV in a virtualized browser workspace with local paged storage. Inspect, sort, filter and download a copy; limits depend on available storage.Validate a CSV fileValidate CSV syntax and optional required, type and allowed-value rules. Locate record and column errors in the editor and download the report.Analyze CSV dataProfile CSV columns with exact counts, missing-value summaries, sum, mean and median. Inspect and download a complete browser-local report.Create a chart from CSVCreate bar, line or scatter charts from CSV. Aggregate full data or choose a sample, inspect plotted values, and export PNG or SVG.
Organize and prepare
Clean, combine and reshape CSV records.
Clean CSV dataChoose trimming, duplicate-key and empty-row cleanup. Review changes, apply with undo, or copy and download the complete CSV.Merge CSV filesCombine CSV files using matching columns or a header union. Preview the merged rows and download a CSV copy.Split CSV filesSplit CSV by record count, UTF-8 file size or desired file count. Preserve record boundaries and download individual files or a ZIP.Compare CSV filesCompare two CSV files by a unique key column. Review added, removed, and changed records, then download a CSV report.Map CSV columnsMap CSV columns to a target schema. Review missing and discarded fields, preserve text values, and apply or download the result.Format a CSV fileChoose CSV delimiters and line endings. Preview normalized quoting and download a formatted copy while preserving cell values.Transpose a CSV fileSwap CSV rows and columns, including the source header row. Preview the new layout, apply with undo, or download a transposed copy.Compress CSV Files OnlineCompress CSV bytes into gzip or restore a gzip file locally. Inspect file sizes and download with clear input and output limits.
Convert and export
Create an output for your spreadsheet, database or document.
Convert CSV to MarkdownConvert CSV into a Markdown table. Preview the result, choose column alignment, and copy or download the output.Convert CSV to PDFTurn CSV data into a printable PDF table. Preview pages, choose orientation and columns, then download the document.Convert CSV to SQLGenerate SQL INSERT, UPDATE, DELETE or native upsert from CSV. Choose keys and types, inspect the statements, and copy or download.Convert CSV to XMLConvert CSV to XML elements or attributes with safe name mappings. Omit empty values when chosen, then preview, copy or download.Convert CSV contacts to VCFMap CSV names, emails, phones, addresses and contact details to vCards. Inspect contact previews and download a free VCF file.Convert CSV to an HTML tableConvert CSV to a safe HTML table. Preview generated source and its rendered table, then copy or download for free.Convert CSV to YAMLConvert CSV rows into YAML records. Preview the output, keep text values intact, and copy or download the result.Convert CSV to SQLiteCreate a SQLite database from CSV. Review the table name and column types, preview rows, and download the database file.Convert CSV to ExcelConvert CSV to an Excel XLSX workbook. Preview the table and preserve leading zeros and source cell values as text.Convert CSV to ParquetConvert multiple CSV files to Parquet online. Upload your files, follow their progress, and download each result automatically. No signup.Convert CSV to TSVConvert CSV into tab-separated values. Preview quoting and spreadsheet-safe output, then download the TSV file.Convert CSV to JSONConvert CSV rows into JSON records. Preview field names and string values, then copy or download the output.
Create and test
Start with documented examples or generate your own rows.
Generate a CSV fileGenerate repeatable fictional CSV data with typed fields, ranges, dates and choices. Preview, edit, copy and download in your browser.Sample CSV Datasets for DownloadDownload documented fictional CSV samples with quotes, Unicode, leading zeros, cleanup exercises and 1,000 rows. Preview or open in the editor.
Plain answers
View CSV questions
What can I do with this CSV viewer?+
Inspect your file locally without uploading it.
Does my CSV leave my device?+
File selection, editing and these task operations run in your browser. No account or file upload is required. Download a new copy to keep your result; refreshing restores the original input, not unsaved edits.
Do the editor and task have the same file limits?+
The editor opens files up to 1 GiB and 5 million records, subject to browser storage and decoded-record limits. Focused calculations and converters have their own processing limits, which are shown by each tool.