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CSS Golden Ratio Calculator

Online CSS golden ratio calculator with golden section sizing, visual split preview, and automatic typography and spacing scale generation for web layout design and frontend styling.

Ready. Update the base size to recalculate.

Golden Ratio Calculator

Calculation result

Larger section
247px
61.8%
Smaller section
153px
38.2%

Golden Ratio (φ)

φ ≈ 1.6180339887

Formula: larger / smaller = φ

The golden ratio is often used in art, architecture, and interface design to build balanced visual rhythm.

Visual preview

247px
153px

Golden spiral preview

Golden Ratio Type Scale

Generate a readable typography hierarchy based on φ

Golden Ratio Spacing Scale

Generate consistent spacing references from φ



Documentation

About CSS Golden Ratio Calculator

This tool applies the golden ratio (~1.618) to compute layout splits and provides visual, typography, and spacing scale guidance.

Key Features

  • Ratio-based Split: Calculates major/minor section sizes from a base value.
  • Direction Toggle: Horizontal or vertical split mode.
  • Visual Guidance: Includes split preview and golden-spiral illustration.
  • Typography Scale: Suggests font sizes using ratio progression.
  • Spacing Scale: Suggests rhythmic spacing values.

Steps

  1. Enter a base size.
  2. Choose split direction.
  3. Review major/minor values and visualization.
  4. Use font/spacing scales in your design tokens.

Use Cases

  • Structuring primary/secondary content layout.
  • Defining typography and spacing systems.
  • Improving visual balance for cards/landing pages.

FAQ

Is golden ratio always the best option?

Not always. It is a strong guideline, but final choices should consider brand style, readability, and context.

Why do outputs include decimals?

The golden ratio is irrational; practical implementations usually round to pixel-friendly values.