Typography Calculators
Font-unit conversion, modular scale, line height, letter spacing, reading time, golden ratio and more typography tools.
Font Unit Converter
Convert a pixel font size to pt, rem, em and % (root 16px, 1pt = 96/72 px).
Modular Scale Calculator
Compute a type step size = base·ratioⁿ from base, ratio and step n.
Line Height from Ratio
Compute line height (px) = font size × ratio.
Line Height Ratio
Compute line-height ratio = line height (px) / font size.
Tracking em → px
Compute letter spacing (px) = em × font size.
Tracking px → em
Compute letter spacing (em) = px / font size.
Reading Time (words)
Compute reading time (min) = words / wpm.
Reading Time (chars)
Compute reading time (min) = characters / cpm.
px → inch / cm / mm
Convert pixels (96 DPI) to inch, cm and mm (1in = 96px = 2.54cm).
Print Size → px
Compute required pixels px = width (in) × DPI.
Golden Ratio
Compute the golden-ratio larger (×φ) and smaller (÷φ) of a base value (φ≈1.6180).
Ideal Measure (CPL)
Compute column width (px) = CPL × char-width-factor × font size.