react
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react
React is a JavaScript library for building user interfaces with declarative, component-based, and cross-platform design.
1234tools-calculation-hub
1234Tools is a browser-based, client-side collection of over 1,169 calculators and converters across finance, math, engineering, health, and everyday tasks, available as a static PWA with no build step.
Stars
10
7-day growth
No data
Forks
0
Open issues
0
License
GPL-3.0
Last updated
2026-07-31
AI repository intelligence
FR-AI / ANALYSISWhy it is worth attention
It packages an unusually large collection of 1,169+ tools into a lightweight static web app that runs entirely in the browser, can be installed as a PWA, and works offline for previously opened tools.
Who it is for
- Students and professionals needing quick calculations
- People looking for free browser-based finance, health, or engineering tools
- Developers interested in a no-build static web app example
- Users who want installable, offline-capable web utilities
Use cases
- Converting units or calculating financial formulas without installing desktop software
- Using calculators on mobile or desktop via an installed PWA
- Browsing a large categorized catalog to find a specific calculator or converter
- Running a local copy by serving static files over HTTP
Strengths
- Over 1,169 calculators and converters in one place
- Client-side processing: calculator data is not sent to a server
- Static HTML, CSS, and JavaScript with no framework or build step
- PWA installation and offline use for previously opened tools
Considerations
- Offline availability only applies to tools already opened in the browser and depends on browser behavior
- Requires JavaScript and a modern browser; local file use may require an HTTP server
- The README does not describe per-tool versioning or a detailed update mechanism
README quick start
Getting Started
Description
Browser-based toolkit with more than 1,169 calculators and converters for finance, mathematics, engineering, health, and everyday problem-solving, delivered as a client-side web application for the latest 2026 release.
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