How many ems are in one pixel?

One pixel equals 0.0625 em. The formula is em = px × 0.0625.

How do I convert pixels to ems?

Multiply the value in pixels by 0.0625. For example, 100 × 0.0625 = 6.25 — so 100 px = 6.25 em.

Pair · linear · factor 0.0625

pixels to ems

pxem

Active unit

pixels · ≈ 100 px (base)

All units

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pxpixel100

How we calculated this

Target:

Frequently asked questions

A glowing emerald letter built from a pixel grid beside a classic metal type sort, wrapped in a geometric grid of measures, on a cosmic nebula in violet and magenta

Typography

A pixel is not a dot: a short history of typographic units

The designer thinks in pixels, the typesetter in points, and the client holds a millimeter ruler up to the print — and nothing matches. This apparent Tower of Babel is not a lack of standards but five centuries of evolution: from lead type and "magpie" books, through the Apple–Microsoft war over screen resolution, to the CSS pixel that is not a dot on the panel at all.

12 min