Design calculators
Design calculators help with layout proportions, aspect ratios, and related visual-math shortcuts.
Pixel and print units must match the labels. These tools do not replace a full design specification or accessibility review.
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Design
Aspect Ratio Calculator
Ratio and simplified W:H of a rectangle.
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Design
DPI PPI Calculator
Pixels per inch from pixel size and print size.
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Design
Golden Ratio Calculator
Longer or shorter segment from golden ratio (mode 0=longer, 1=shorter).
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Design
PX REM Calculator
Convert px ↔ rem (mode 0=px→rem, 1=rem→px).
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Design
Resolution Scale Calculator
Scaled pixel dimensions for 2× / 3× assets.
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Design
Screen Diagonal Calculator
Diagonal from width and height (same units).
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