Markup
Single static HTML page
The page structure is defined in one HTML file, including the calculator UI, custom select markup, result display, help modal, and miner comparison modal.
Main Stack
What is used in this mining cost calculator and how the pieces are split up.
Styling
Custom CSS
The visual layer is built with a standalone stylesheet rather than a CSS framework. It includes branded typography, custom form styling, result panels, and responsive behavior.
JavaScript structure
Vanilla JS split by concern
Unlike a one-file static app, this project separates concerns into multiple scripts for menu behavior, modal logic, translation handling, and calculator interaction.
Internationalization
Built-in EN/PT translation system
The app includes a manual translation dictionary and page update flow, letting the same interface switch between English and Portuguese without a framework i18n library.
Reference data
Embedded miner examples
Miner comparison and default reference values are shipped directly in the frontend, so the calculator can work entirely offline after load without fetching catalog data.
Runtime model
No backend or build pipeline
The project is a browser-only calculator. It has no bundler, package manifest, backend API, or database layer, which keeps deployment and local usage extremely simple.
How It Runs
The app is assembled in the browser from one HTML page and several helper scripts.
1
The browser loads the HTML shell
index.html defines the structure for inputs, miner selection, result areas, language toggles, and modal content.
2
Custom CSS applies the branded UI
styles.css sets the layout, card look, typography, spacing, and adaptive behavior across screen sizes.
3
Translation bootstraps the interface
translate.js loads the current language, swaps labels and helper text, and coordinates the bilingual display logic.
4
Menu and modal scripts handle interaction
menu.js and modal.js manage custom UI behavior such as overlays, picker interaction, and help or miner-reference popups.
5
The calculator updates results in-place
User input drives browser-side calculations for energy cost estimation and updates the rendered results immediately without any server communication.
Architecture Map
This is still a static app, but more modular than the simpler calculators in the workspace.
Key files
index.htmlMain UI shell and structural markup for the calculator.
styles.cssFull styling layer for layout, forms, cards, and responsive design.
menu.jsCustom select/menu behavior for miner choice and interaction flows.
modal.jsModal open/close logic for compare/help content.
translate.jsTranslation dictionary and page update logic for EN/PT mode.
tax.icoProject favicon asset.
Architecture Analysis
index.html styles.css menu.js modal.js translate.js tax.ico
This project shows a useful middle ground between raw inline JavaScript and a full framework: it is still static, but the interaction logic has been split into focused browser scripts.
Data and Interaction
The calculator is driven by embedded reference data and in-browser state.
Input model
User input controls the estimate
Hashrate, power, efficiency, and tariff values are entered or prefilled from miner examples.
The calculator updates cost estimates directly in the browser.
No backend persistence or account system is involved.
The app is designed for quick what-if comparisons.
Reference behavior
Embedded examples and bilingual copy
Miner examples are bundled into the frontend experience.
Translation strings are stored directly in JavaScript objects.
The app can run without network calls once loaded.
Interaction richness comes from custom scripts rather than external UI libraries.
Run Commands
No install step is required unless you prefer serving it over localhost.
Local usage
open index.html # or python -m http.server
The project can be opened directly as a static page or served from a tiny local server if you want URL-based testing.
Environment setup
What the project expects
No dependency installation.
No environment variables.
No API keys.
No framework runtime.
Bottom Line
Hash Cost Calculator is a modular static web app built with HTML, CSS, and multi-file vanilla JavaScript. Its standout trait is that it adds richer UI behavior, bilingual support, and reference data without crossing into a framework-based architecture.