Developer Tools

Typography Scale Calculator

Generate a harmonious typographic scale using classical ratios (Perfect Fourth, Golden Ratio, Major Third, etc.). Output CSS variables and Tailwind config.

Scale Settings

Result

Your type scale will appear here.

Chmod Calculator

Calculate Unix file permissions visually. Click checkboxes to set read/write/execute for owner, group, and others. Shows octal and symbolic notation.

CSS Specificity Calculator

Calculate CSS selector specificity and understand which styles take precedence. Supports ID, class, attribute, pseudo-class, element, and pseudo-element selectors.

CSS Unit Converter

Convert between CSS units: px, rem, em, pt, vw, vh. Set custom base font size and viewport width.