Free Tools for Researchers

Cite sources, convert units, move data between CSV, JSON and Excel, and pull text and tables out of PDFs for analysis. Data stays on your computer.

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

Citation GeneratorAPA 7, MLA 9, Chicago and Harvard citations for websites, books, book chapters, journal articles, YouTube videos and reports, with DOI and ISBN look-up.Scientific CalculatorTrig in degrees or radians, logs, powers and any root, factorials, memory keys and a history of results.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.Unit ConverterLength, weight, volume, pressure, speed, energy, power, time, temperature, fuel economy, angles, data and land (cent, guntha, acre).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.PDF to TextExtract a PDF's text in any language, as lines or paragraphs, with or without page markers.PDF to MarkdownTurn a PDF into clean Markdown with headings, lists, tables and links, for notes, docs and AI tools. No upload.PDF to ExcelConvert PDF tables and bank statements to Excel (.xlsx) or CSV. No upload.Word CounterWords, characters, sentences, pages, reading time, keyword density and reading level, in any language.Diff CheckerCompare two texts and see added and removed lines or words.Random Number GeneratorFair random numbers in any range, whole or with decimals, with or without repeats, sorted if you like.Merge PDFCombine PDF files into one, in any order, without uploading.Compress PDF to SizeShrink a PDF to 100 KB, 200 KB, 500 KB or any size for online forms. No upload.

Getting tables out of papers

Use PDF to Excel for tables and PDF to Markdown for text with headings. Check numbers against the original: scanned PDFs need OCR first, and two-column layouts may need tidying.

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