Data Tools
Tools to parse and manipulate data.
Converters
Date Calculator
Difference between dates, add/subtract, working days with holidays, age.
JSON Converter
JSON ⇄ CSV, YAML, TOML, XML, Markdown — plus TypeScript types.
Number Formats Converter
Number ↔ words in 7 languages, lakh/crore ↔ million grouping, cheque amounts, Roman, ordinal, scientific.
Spreadsheet Formula Converter
Excel ↔ Google Sheets ↔ LibreOffice: rename functions, fix separators & refs, A1 ↔ R1C1, compatibility report.
Unit Converter
Length, weight, temperature, area, volume, speed, data size and time.
Parsers
CSV Viewer & Editor
Sort, filter, edit and dedupe CSV — export to CSV, JSON or Excel.
Log Parser
Filter JSON, Nginx and syslog logs by level and time, with stats.
SQL on CSV
Query CSV / JSON files with real SQL (SQLite) — joins, GROUP BY, export.
Text Extractor
Pull emails, phone numbers, links and hashtags out of any text.
URL Parameter Separator
Inspect, strip tracking tokens (UTMs), and research query parameters.