calculatory.app

Digital & Developer Tools

5 free tools for developers, writers, and digital professionals. No sign-up, no ads in the way — just fast, accurate utilities that run in your browser.

Word & Character Counter

Count words, characters, sentences, and paragraphs. See reading time, keyword density, and social media limits.

NewPopular

Binary to Decimal Converter

Convert between binary, decimal, hexadecimal, and octal number systems instantly. Essential for developers.

NewPopular

Case Converter

Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, and kebab-case.

New

Hex to RGB Converter

Convert hex color codes to RGB, HSL, and HSB values. Includes color preview and CSS output.

New

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back. Supports seconds, milliseconds, and multiple time zones.

New

About these tools

This category covers digital utility tools — the everyday tasks that developers, designers, writers, and technical users reach for regularly. Every tool runs entirely in your browser: no data is sent to a server, no account is needed, and nothing is stored anywhere outside your own machine.

The Word & Character Counter tracks words, characters, sentences, paragraphs, and reading time — with live social media character limit indicators for Twitter/X, LinkedIn, and Instagram. The Binary to Decimal Converter handles conversions across binary, decimal, hexadecimal, and octal simultaneously. The Case Converter covers all developer-relevant formats including camelCase, snake_case, and kebab-case. The Hex to RGB Converter includes live color preview with HSL and HSB outputs. The Unix Timestamp Converter handles both seconds and milliseconds and supports multiple time zones.

More tools — including a Markdown to HTML converter, regex tester, JSON formatter, and Base64 encoder — are planned in upcoming phases.