Type Scale & Modular Scale Generator

Generate a typographic scale from a base font size and a chosen ratio — golden ratio (1.618), perfect fourth (1.333), perfect fifth (1.5), augmented fourth (1.414), major third (1.25), minor third (1.2), or a custom ratio. The scale produces semantically named steps (xs, sm, base, md, lg, xl, 2xl, 3xl) with px and rem values, a live preview, and ready-to-paste CSS custom properties. Pure arithmetic, runs locally in your browser.