Bouldering Chalk Bag Volume and Density Estimation Tool

Overview

A precise, browser-based utility designed for climbers to estimate the volume capacity of their chalk bags and the density/surface area of their chalk blocks. This tool helps climbers manage supply levels and equipment compatibility without external storage dependencies.

Core Features

• Chalk Bag Volume Calculator:
  • Cylinder mode: Calculate volume based on bag diameter and height.
  • Frustum/Tapered mode: Calculate volume for bags with a wider opening than base.
  • Volume output in Liters and Cubic Centimeters (cm³).
• Chalk Density & Capacity Estimator:
  • Convert weight (grams) to volume based on selected chalk type (Fine Powder vs. Chunky Block).
  • Max capacity warning if volume exceeds input dimensions.
• Chalk Block Surface Area/Crushing Area Calculator:
  • Calculate total surface area for standardized rectangular chalk blocks.
  • Estimate remaining volume based on "used" dimensions.

UI/UX Layout

• Header: Clean, centered title with a brief description of utility.
• Main Tool Area:
  • Tabbed interface to switch between 'Bag Capacity' and 'Block Analysis'.
  • Input fields with clear labels and real-time validation (no negative numbers).
  • Result cards that animate (slide-in) upon calculation to display clear, bold numeric outputs.
• Visuals:
  • Simple, responsive forms using high-contrast inputs.
  • Soft shadows (box-shadow) for interaction cards to distinguish them from the background.

Design System & Palette

• Color Palette (Light Mode Only):
  • Background: #F8FAFC (Soft Cool Gray)
  • Primary: #0284C7 (Vibrant Sky Blue for call-to-actions)
  • Text: #1E293B (Deep Slate for readability)
  • Accent: #E2E8F0 (Subtle borders)
• Animations:
  • Smooth transitions on input focus states.
  • Subtle fade-in effects for dynamic result generation.
  • Responsive layout shifts using CSS Flexbox/Grid to handle mobile stacking.

Technical Implementation Guidelines

• Single File: All HTML, CSS (Tailwind via CDN), and Vanilla JS must reside in one file.
• No Storage: Strictly no localStorage, sessionStorage, or cookies. Maintain state using JavaScript variables only.
• Compatibility: Use standard DOM APIs. Ensure the app is fully functional inside a sandboxed iframe (no popups, no external scripts that require access to parent storage).
• Accessibility: Ensure all input fields have labels and high-contrast text for inclusivity.
• Security: Use strict input sanitization. All external links must utilize target="_blank" rel="noopener noreferrer".