CSS units·14px
14px =
0.875rem
10.5pt

14 px in rem — 0.875 rem, 10.5 pt

14 px is 0.875 rem and 10.5 pt — 0.14583 inches, 3.704 mm, and 87.5% of the root font size.

rem (root 16 px)
0.875rem
pt (points)
10.5pt
pc (picas)
0.875pc
percent of root
87.5%
inches
0.14583in
millimetres
3.704mm
centimetres
0.3704cm

Why rem divides by 16

Because browsers default the root font size to 16 px, and rem is a multiple of it. When a reader enlarges text in their browser settings, only the parts written in rem grow — anything pinned in px stays put.

Nearby sizes

pxrem (root 16 px)pt (points)
11px0.6875rem8.25pt
12px0.75rem9pt
13px0.8125rem9.75pt
14px0.875rem10.5pt
15px0.9375rem11.25pt
16px1rem12pt
17px1.0625rem12.75pt

On screen, pt and inches are still pixels

CSS fixes one inch at 96 px and one point at 1/72 inch. So 16 px is exactly 12 pt — but hold a ruler to the screen and that "inch" will not measure an inch.

Sizes you meet most

Body text at 16, small text at 14, spacing at 8, 24 and 32 — the values that keep coming back.

How to read this

  • rem = px ÷ 16, because browsers default the root font size to 16 px.
  • pt = px × 0.75, since CSS fixes an inch at 96 px and a point at 1/72 inch.
  • One pc is 12 pt, and one inch is both 96 px and 72 pt.
  • Use rem for text and spacing; keep px for hairlines such as borders.

Frequently asked questions

Q. How many rem is 14 px?

0.875 rem — that is 14 divided by 16.

Q. How many points is 14 px?

10.5 pt. A point is 1/72 inch and an inch is 96 px, so you multiply by 0.75.

Q. What length is that?

0.14583 inches, or 3.704 mm — though a ruler on the screen will not agree.

Q. And as a percentage?

87.5% of the root font size.