VW to PX Converter

About This Tool

This tool converts viewport width (vw) values to pixel (px) equivalents when a target viewport width is supplied. It is intended for front-end developers, UI designers, design‑systems engineers, and documentation teams who need deterministic sizing rules for responsive components. By providing a vw value and the corresponding viewport width, users obtain a precise px result that can anchor typography, spacing, and component dimensions in both design specifications and implementation code. No external data or references are required.
Core calculation follows the CSS definition: 1vw equals 1% of the viewport width. The formula is px = (vw / 100) × viewport_width_px. For example, 5 vw with a 1200 px viewport yields 60 px. The tool supports formatting options such as rounding to a fixed number of decimal places, enabling clean tokens for CSS variables, design tokens, or preprocessor values. It also supports validating inputs and providing clear numeric outputs.
Inputs are a single numeric vw value and the viewport width in pixels, plus optional precision and rounding mode. Outputs are a numeric px value, with units implied by the surrounding CSS context. The tool validates inputs (0 ≤ vw ≤ 100, viewport width > 0) and outputs results quickly, supporting both direct in-page usage and integration into automated pipelines that generate style sheets or design tokens.
Unique value lies in its straightforward, dependency‑free calculation, explicit handling of invalid ranges, and the ability to harmonize vw-based decisions with concrete px values across breakpoints. The target audience includes developers, designers, and product teams seeking reliable conversions for responsive design and documentation, without requiring a larger calculator or scripting environment.

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