Pixel to VH Converter
Converts pixel values to viewport height (vh) units for responsive CSS; ideal for frontend developers and designers optimizing layouts.

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About This Tool
The Pixel to VH Converter translates a pixel measurement into a CSS vh value, enabling proportional heights across devices without rewriting CSS for each breakpoint. It is designed for frontend developers, UI engineers, and designers who need a quick, reliable way to express heights relative to the viewport. Conceptually, vh represents a percentage of the viewport height, so the core relation is vh = (px * 100) / viewport_height_px. The tool validates numeric inputs, returns a single numeric vh value, and supports optional rounding to desired precision. By removing manual calculations, it reduces errors when migrating pixel-based layouts to fluid designs. The tool fits into CSS drafting and QA workflows where proportional heights must be preserved on mobile, tablet, and desktop. Its value lies in fast verification of height choices during layout planning and iterative testing, especially when viewport heights vary by device or orientation. Users can reuse results across components by applying the computed vh value to height properties in stylesheet rules. The approach is lightweight, language-agnostic, and integrates easily with existing CSS strategies, contributing to more robust responsive behavior and faster design-to-code handoffs.
How to Use
1. Provide inputs: enter the pixel value (px_value) and the viewport height in pixels (viewport_height_px).
2. Confirm inputs are numeric and positive for viewport height.
3. Run calculation to obtain the vh result (vh_value = (px_value * 100) / viewport_height_px).
4. Review the formatted vh output and apply rounding if needed.
5. Copy the vh value into your CSS height property, e.g., height: 50vh;

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