The Whitney family contains six weights from Light to Black, each provided in roman, italic, and both roman and italic small caps. Whitney maintains visually consistent intervals between its weights, to ensure that every style has a heavier counterpart that provides the same degree of emphasis.

Whitney is suited to use at sizes large and small. The following tables offer some conservative guidelines for the smallest sizes at which the fonts can comfortably be reproduced and read, assuming typical reading conditions, and conventional contrast between type and background colors. The recommendations for sizes on screen are based on the coarser resolutions of older, entry-level monitors: at the higher resolutions available on modern phones, tablets, and laptops, type is viable at even smaller sizes.