Free Data Tools

Convert and clean data between CSV, JSON and Excel, compare files, test regular expressions and run quick calculations without opening a notebook. Files stay on your device.

All 16 tools here work now, and none of them needs credits.

CSV ↔ JSON ConverterConvert CSV to JSON and back, with quotes and delimiters handled.Excel to CSVConvert any sheet of an .xlsx, .xls or .ods file to CSV, or every sheet at once.Spreadsheet Converter (CSV to Excel, XLS to XLSX)Convert CSV to Excel, XLS to XLSX, ODS to XLSX or CSV, and Excel to JSON or JSON to Excel, in your browser.JSON FormatterValidate, pretty-print and minify JSON privately.PDF to ExcelConvert PDF tables and bank statements to Excel (.xlsx) or CSV. No upload.Diff CheckerCompare two texts and see added and removed lines or words.Regex TesterTest JavaScript regular expressions: matches highlighted, capture and named groups, flags, replace and common patterns.Average CalculatorMean, median, mode, range, geometric mean, standard deviation and weighted average of any list, with the working.Percentage CalculatorX% of Y, what percent X is of Y, percentage change, reverse percentages, percentage difference and share of a total.Scientific CalculatorTrig in degrees or radians, logs, powers and any root, factorials, memory keys and a history of results.CAGR CalculatorCompound annual growth rate between two values over years or dates, or the end value at a CAGR, with a yearly table.NPV, IRR & XIRR CalculatorNet present value and internal rate of return for yearly or dated cash flows, including XIRR for SIPs and mutual funds.Random Number GeneratorFair random numbers in any range, whole or with decimals, with or without repeats, sorted if you like.UUID GeneratorUUID v4, v7, v1, v5 and v3 in bulk, GUID formats, and a checker that shows a UUID's version and time.Date CalculatorDays, months and business days between dates (with your holidays), and add or subtract days, weeks, months or business days.Unit ConverterLength, weight, volume, pressure, speed, energy, power, time, temperature, fuel economy, angles, data and land (cent, guntha, acre).

Opening CSVs safely

Text that starts with = + - or @ can run as a formula when a CSV is opened in Excel. Check exported text fields before you share a file, and put an apostrophe in front of any that start that way.

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