Free online tools, explained simply
No sign-up, no clutter. Pick a category below — every tool comes with a clear result, plus the reasoning behind it so you're never just staring at a number. Everything runs right in your browser, so your files and numbers are never uploaded anywhere.
Categories
Finance Tools
12 toolsMortgage, loan, savings, retirement, and other financial calculators — with plain-language explanations for every result.
PDF Tools
9 toolsMerge, split, compress, and convert PDF files, right in your browser.
Excel Tools
9 toolsSpreadsheet converters and utilities for everyday Excel and CSV tasks.
Image Tools
9 toolsResize, compress, crop, and convert images without uploading them anywhere.
Converters
9 toolsUnit, currency, and file-format converters for quick everyday conversions.
Developer Tools
9 toolsJSON formatters, encoders/decoders, and other everyday developer utilities.
Text Tools
15 toolsCase converters, text cleanup, generators, and ciphers for working with text.