csv and spreadsheet tools Tools

Complete ASCII table with all 128 characters. View decimal, hex, octal, and binary values. Search, filter by category, copy characters, and export as CSV.

Common ports lookup: search 96 well-known TCP and UDP ports by number or service name. Shows whether each port is safe to expose to the internet and why not. Works offline.

Convert CSS stylesheets to React Native StyleSheet.create() syntax instantly. Handles px to number conversion, margin and padding shorthands, box-shadow, and unsupported property warnings.

Extract, reorder, and filter CSV columns online. Upload files up to 200 MB or paste CSV directly. Select which columns to keep, reorder them, and download the result. Free, browser-based.

CSV diff checker compares two CSV files row by row and shows added, removed, and modified cells with key column matching. Free, private, all in your browser.

Merge multiple CSV files into one clean output in seconds - perfect for combining exports and preparing unified datasets, no install.

Split large CSV files into smaller chunks by row count for uploads, imports, and batch workflows - runs in browser, no data sent.

CSV to Excel converter builds a real .xlsx workbook from pasted or uploaded CSV, with typed numbers, real dates and a bold header row. Free, no upload and no signup.

Convert CSV data to a clean HTML table with Bootstrap-compatible classes. Supports bordered, striped, and responsive options. Copy or download instantly.

Convert CSV to JSON and JSON to CSV with customizable options. Supports custom delimiters, headers, and nested output. Free, browser-based, no signup required.

Convert CSV to Markdown tables instantly with file upload support and custom delimiters. Runs in your browser - no data sent to any server.

Convert CSV files to SQL INSERT or UPDATE statements. Customize table names, column types, and database dialects including MySQL, PostgreSQL, and SQLite.

Convert CSV files to TSV (tab-separated values) or reverse. Handles quoted fields, embedded commas, and special characters correctly. Free, runs in your browser.

Transform CSV data into properly structured XML documents. Customize root elements, row tags, and indentation for clean XML output.

Convert CSV data to YAML format instantly in your browser. Handles quoted fields, custom delimiters, header rows, and automatic type detection for numbers and booleans. Free, private, no upload required.

CSV viewer online: open a CSV from a URL, upload a file, or paste data, then search, sort, and filter it in a clean table. Shareable ?url= links, custom delimiters, large files.

Extract all valid email addresses from text, HTML, CSV, or documents. Remove duplicates and download results as TXT or CSV - free.

Build Excel and Google Sheets formulas by picking a task and filling in your ranges. VLOOKUP, SUMIFS, DATEDIF, TEXTJOIN, FILTER and more, each with a plain-English explanation.

Excel to CSV converter turns any .xlsx or .xlsm worksheet into clean CSV, with sheet picking, custom delimiters and ISO dates. Free, private and runs in your browser.

Excel to JSON converter turns any .xlsx or .csv worksheet into clean JSON records, with header keys, ISO dates and multi sheet support. Free, private, runs in your browser.

Generate realistic fake data for testing and development. Create random names, emails, phone numbers, addresses, and more in JSON or CSV format.

Git command generator with 44 task recipes: undo the last commit, squash with rebase, force push safely, recover a deleted branch. Every flag explained, risky commands flagged.

HTML table to JSON converter extracts any HTML table into structured JSON or CSV, using header rows as keys. Paste markup and export instantly. Free, no signup.

Flatten nested JSON objects into dot-notation keys instantly. Great for logs, spreadsheets, API payload inspection, and analytics workflows.

Convert JSON data to CSV format instantly. Supports nested objects, custom delimiters, and batch conversion. Download as CSV or TSV file.

Convert JSON arrays to Excel-compatible CSV or XLS files instantly. Supports nested objects, custom delimiters (comma, tab, pipe, semicolon), and live table preview. No upload required.

Convert flattened dot-notation JSON keys back into nested JSON structure. Rebuild complex objects from flat API or CSV-style key maps.

JSONL viewer that turns JSON Lines and NDJSON files into a searchable table in your browser. Validates every line with line numbers, then exports to a JSON array or CSV. Free, nothing uploaded.

List to comma separated converter joins a column of values into one line, a quoted SQL IN list or a JSON array, and splits delimited values back into a list. Free, instant.

Convert PNG images to WebP format for smaller file sizes with excellent quality. Adjust quality, preview before downloading, and batch convert multiple images.

Convert SQL INSERT INTO statements to CSV format instantly. Parse single or multi-row inserts, handle quoted strings and NULLs, and download clean CSV files. Free online converter.

Convert tab, comma, pipe, semicolon, or spaced text into valid CSV format. Copy or download clean CSV output for spreadsheets and data imports.

Convert plain text to JSON format. Supports lines to array, key-value to object, CSV to JSON, and custom delimiter parsing. Free online tool.

URL extractor pulls every link out of text, HTML, or log files, removes duplicates, and counts domains. Free, browser-based, exports to CSV or markdown.

Vim commands lookup: search real commands by task - exit vim, delete a line, search and replace across a file. Grouped by mode with practical notes. Works offline, free.

Count how often each word appears in your text. Analyze keyword density, find overused words, and export results as CSV.

Convert XML files to CSV format easily. Extract data from nested XML structures into a clean, flat CSV table with customizable delimiters.