CSS units·118px
118px =
7.375rem
88.5pt

118 px in rem — 7.375 rem, 88.5 pt

118 px is 7.375 rem and 88.5 pt — 1.22917 inches, 31.221 mm, and 737.5% of the root font size.

rem (root 16 px)
7.375rem
pt (points)
88.5pt
pc (picas)
7.375pc
percent of root
737.5%
inches
1.22917in
millimetres
31.221mm
centimetres
3.1221cm

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)
115px7.1875rem86.25pt
116px7.25rem87pt
117px7.3125rem87.75pt
118px7.375rem88.5pt
119px7.4375rem89.25pt
120px7.5rem90pt

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 118 px?

7.375 rem — that is 118 divided by 16.

Q. How many points is 118 px?

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

Q. What length is that?

1.22917 inches, or 31.221 mm — though a ruler on the screen will not agree.

Q. And as a percentage?

737.5% of the root font size.