Eyewear Golden Ratio Check | Frame Design Balance Calculator
Eyewear Golden Ratio Calculator
Check both physical fit and visual balance of frames based on age, region, and frame dimensions.
Calculator
Result
Field & Region Guidance
The ideal ratio depends on frame geometry, facial type, age, and region. Use this guidance to understand each input:
- Lens Width: Horizontal lens dimension
- Lens Height: Vertical lens dimension (optional)
- Bridge Size: Distance between lenses over the nose
- Temple Length: Sidearm length from hinge to tip
- Population: Regional face structure (Asian, European, American)
- Age Group: Children, Young Adult, Adult, Senior
Formula & Ranges
Golden Ratio is calculated as:
If lens height provided:
ratio = lens width / lens height
Else (approximate):
ratio ≈ (lens width + bridge) ÷ (temple / 100)
| Range | Interpretation |
|---|---|
| – | Waiting for input... |
Understanding the Golden Ratio in Eyewear
The Golden Ratio (φ ≈ 1.618) is widely recognized as a principle of visual harmony. In eyewear design, it helps assess frame balance between lens width, bridge, and temple length.
Ratios within 1.3–1.6 are typically considered balanced for most adult faces, but children's faces are smaller, and ideal ranges must be adjusted accordingly.
Impact of Age and Region
- Children / Teenagers: Smaller faces, lower bridge; ideal lens width generally ≤ 50mm
- Young Adults: Standard adult proportions
- Adults: Standard adult proportions, lens width 50–60mm
- Seniors / Elderly: Possible lower bridge; adjust ratios slightly lower
Regional differences (Asian, European, American) also affect ideal ranges. This calculator considers both age and region for realistic recommendations.