Data & Spreadsheet Tools
Tools for working with tabular data: open spreadsheets and CSV files, convert between formats, clean up columns and duplicates, and turn numbers into charts. Files are read on your device and never uploaded.
All 40 data tools
Grouped by what they do.
Open & edit files
4 toolsOpen and edit data files without installing anything.
- CSV Editor & Viewer Open, fix and save CSV files in a spreadsheet grid — large files included.
- Excel Viewer (XLSX, XLS, ODS, Numbers) Open any spreadsheet without Excel — every sheet, formula and comment, nothing uploaded.
- SQLite Online (SQL Playground) A full SQLite database in your browser — open, query, import, export. Pro tool
- Large CSV File Viewer Open CSV files of several GB: jump to any row, filter them, export a part. Pro tool
Convert data
15 toolsMove data from one file format to another.
- Excel to CSV Converter Turn any sheet into clean CSV — every sheet at once, title rows and merged cells fixed.
- JSON ↔ YAML Converter Two-way JSON ⇄ YAML conversion that keeps numbers exact and warns about YAML traps.
- CSV to Excel Converter CSV to .xlsx without losing leading zeros, phone numbers or long IDs.
- HTML / Web Table to CSV & Excel Copy a table from any web page, Word file or Wikipedia article — get clean CSV or Excel.
- CSV to SQL Converter Typed CREATE TABLE and batched INSERTs, upserts or bulk-load scripts for six databases.
- Excel to JSON Converter Spreadsheet rows to clean, typed JSON — header row as keys, dates as ISO 8601.
Show all 15 Show fewer Convert data tools
- PDF to Excel Converter Turn tables in a PDF into a spreadsheet — columns you can fix, numbers that add up. Pro tool
- XML ↔ JSON Converter Two-way XML ⇄ JSON with control over attributes, arrays and namespaces — XXE-safe.
- JSON to Excel Converter API responses and nested JSON to a clean Excel workbook — one sheet per list.
- PDF Table to Excel / CSV Box the table once — get every page of it as one clean spreadsheet. Pro tool
- Table Converter Paste a table in any common format, tidy it in a grid, export it in 29 formats.
- Number Extractor Paste any text and get every number in it, with an exact sum, average, low and high.
- Spreadsheet Format Converter (XLS, XLSX, ODS, Numbers) Change a workbook’s format — and see exactly what carries over before you convert.
- TOML ↔ JSON Converter Exact TOML ⇄ JSON / YAML conversion, with errors that name the rule and the line.
- Excel to PDF Converter (XLSX, CSV) Spreadsheets to print-ready PDFs — formatting, page setup and header rows kept. Pro tool
Clean & transform
4 toolsFix and reshape data before you use it.
- Remove Duplicate Rows (CSV/Excel) Find and remove repeated rows by the columns that matter, with a file of what was removed.
- CSV Column Mapper Fit an export to an import template — or pick, rename and reorder its columns.
- Text to Columns Excel’s Text to Columns, online: split lines or a column, then paste back into a sheet.
- CSV Transpose & Unpivot Flip rows and columns, or reshape wide ↔ long — then paste straight back into Excel.
Merge, split & compare
5 toolsBring files together, split them up or compare them.
- CSV & Excel Splitter Cut big CSV and Excel files into smaller ones, header repeated in each. Pro tool
- CSV & Excel Merger Stack CSV and Excel files into one table, with columns lined up by name. Pro tool
- Compare Two Excel or CSV Files See exactly which rows were added, removed or changed between two spreadsheets. Pro tool
- Join CSV/Excel Files (VLOOKUP Online) VLOOKUP for whole files: bring columns from one table into another by a key. Pro tool
- Compare Two Lists What is in one list but not the other — and what they share.
Charts & graphs
8 toolsTurn your numbers into charts.
- Chart Maker (Graph from Data) Paste a table, pick a suggested chart, download it — all in your browser.
- Bar Graph Maker Grouped, stacked, horizontal and diverging bar charts from your numbers.
- Line Graph Maker Line and area charts on a real date axis, with notes and moving averages.
- Pie Chart Maker Pie and donut charts with clear labels, percentages and an “Other” slice.
- Scatter Plot Maker Scatter and bubble charts with trendlines, their equations and R².
- Descriptive Statistics Calculator Every summary statistic of your data, with a box plot, histogram and stem-and-leaf.
- Venn Diagram Maker Paste lists or type set sizes: every overlap counted, listed and drawn.
- Word Cloud Generator Word clouds from text or word lists, in any shape, with PNG, SVG and CSV export.
Tables & templates
4 toolsMake tables, templates and sample data.
- LaTeX Table Generator Edit a table like a spreadsheet and get clean LaTeX code with the packages it needs.
- HTML Table Generator Spreadsheet-style editing, accessible table markup out — styled, responsive and sortable.
- Markdown Table Generator Spreadsheet-style editing for GitHub Markdown tables, with a live preview.
- Mock Data Generator Design the columns, link the tables, and download up to a million rows of test data. Pro tool
No data tools match these filters.
Choose “Anything” in one of the filters, or look across every category on All tools.
Data tools A–Z
C
E
S
Collections with data tools
All collections →- 101 tools Finance & CA Income tax & TDS · GST & compliance · Returns & valuation · 4 more
- 197 tools Developers JSON, YAML & data formats · Format, convert & run code · Encode, decode & hash · 5 more
- 174 tools Students Grades, marks & exams · Essays & writing · Citations & references · 4 more
- 95 tools Engineers Electrical & electronics · Mechanical, fluids & HVAC · Civil & construction · 3 more
Good to know
- 39 of 40 tools run entirely in your browser; the other one explains on its page what it sends.
- 37 of 40 keep working without a connection once loaded.
- HTML / Web Table to CSV & Excel: Pasted content and opened files never leave your device. The Wikipedia tab asks Wikipedia for the article you name, straight from your browser. The Web page tab sends only the address to MySmartCoPilot, which fetches that page and returns the text of its tables.
- SQLite Online (SQL Playground): The SQLite engine (about 650 KB of WebAssembly) is downloaded from this site the first time you open, import or run something; after that it also works offline. Your databases, files and queries are never uploaded.
- Word Cloud Generator: The first time you use it, the stop-word lists (about 70 KB compressed) and the font you choose are downloaded from MySmartCoPilot. Your text, word lists and pictures never leave your device.
Other categories
All tools →- 132 tools Developer Format, validate, encode, decode.
- 95 tools Text Count, clean, sort, compare.
- 92 tools Image Compress, resize, convert, crop.
- 55 tools PDF Merge, split, extract, convert.
- 35 tools Audio & Video Convert, trim, compress media.
- 56 tools Design Colours, gradients, CSS.
- 36 tools SEO Meta tags, sitemaps, schema.
- 27 tools Social Media Captions, previews, limits.
- 94 tools Finance Loans, savings, interest, tax.
- 78 tools Business Invoices, quotes, margins.
- 39 tools Legal Templates and legal maths.
- 48 tools Health BMI, calories, pregnancy.
- 51 tools Math Calculators and solvers.
- 45 tools Science Physics, chemistry, astronomy.
- 31 tools Engineering Electronics, electrical, mechanical.
- 29 tools Construction Materials, area, home costs.
- 80 tools Education Grades, citations, study.
- 36 tools Network DNS, headers, IPs, subnets.
- 35 tools Security Passwords, encryption, keys.
- 33 tools Converters Every unit, exact factors.
- 75 tools Utility Convert, count down, randomise.