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1 em = 1 rem
1 Em equals 1 Rems

Ems to Rems Conversion Table

Standard benchmark values from 1 to 1,000 em in rem.

Ems (em) Rems (rem)
1 em 1 rem
2 em 2 rem
5 em 5 rem
10 em 10 rem
25 em 25 rem
50 em 50 rem
100 em 100 rem
250 em 250 rem
500 em 500 rem
1000 em 1000 rem

Convert Ems to Rems

Convert ems to rems (em to rem) with our instant calculator. 1 em = 1 rem. Includes exact formula and reference tables.

How to Convert Ems to Rems (em to rem)

1 Em (em) is equal to 1 Rems (rem). Multiply the em value by 1

Quick Answer 1 em = 1 rem
Formula rem = em × 1
Inverse Factor 1 rem = 1 em

Unit Definitions & Metrology Context

In standard digital design and CSS specifications (W3C CSS Values Module), the reference pixel (px) is calibrated to 1/96th of an inch (96 DPI baseline).

About Ems (em): Em (em) is a unit in the Typography measurement category. It is widely used in relative font size (16 px standard). Relative to the typography base unit, 1 em equals 16 Pixels (px).

About Rems (rem): Rem (rem) is a unit in the Typography measurement category. It is widely used in root em (16 px browser standard). Relative to the typography base unit, 1 rem equals 16 Pixels (px).

Need to convert in the opposite direction? Visit our Convert Rems to Ems (rem to em) calculator (1 rem = 1 em).

Step-by-Step Worked Examples (em to rem)

  • Convert 5 Ems to Rems: Applying the formula (rem = em × 1): starting with 5 em, multiply the em value by 1 to get 5 rem.
  • Convert 10 Ems to Rems: Applying the formula (rem = em × 1): starting with 10 em, multiply the em value by 1 to get 10 rem.
  • Convert 50 Ems to Rems: Applying the formula (rem = em × 1): starting with 50 em, multiply the em value by 1 to get 50 rem.

Popular Typography Conversions

Pixel ⇄ Rem
Divide pixels by 16 to get root rems (assuming default 16px browser base font size).
Rem ⇄ Pixel
Multiply rem by 16 to get the computed pixel value (1.5 rem = 24 px).
Point ⇄ Pixel
Multiply typography points by 4/3 (~1.333) to get CSS pixels (12 pt = 16 px).
Pixel ⇄ Point
Multiply CSS pixels by 0.75 (3/4) to get typography points (16 px = 12 pt).
Pica ⇄ Pixel
1 pica equals exactly 12 points or 16 CSS pixels.

Frequently Asked Questions

Verified answers and formulas for converting ems to rems.

How many rems are in 1 em?

There are 1 rems (rem) in 1 em (em). Conversely, 1 rem equals 1 ems.

How do you convert ems to rems?

To convert ems (em) to rems (rem), use the formula: rem = em × 1. Multiply the em value by 1. For example, 10 em equals 10 rem.

How do I convert back from rems to ems?

To convert in the reverse direction from rems (rem) to ems (em), use the inverse formula: em = rem × 1. Multiply the rem value by 1 (1 rem = 1 em).

What is the difference between em (em) and rem (rem)?

Both em and rem measure typography. Em (em) is a unit in the Typography measurement category. It is widely used in relative font size (16 px standard). Relative to the typography base unit, 1 em equals 16 Pixels (px). Rem (rem) is a unit in the Typography measurement category. It is widely used in root em (16 px browser standard). Relative to the typography base unit, 1 rem equals 16 Pixels (px).

How do you convert pixels (px) to rem?

Divide the pixel value by 16 (assuming default root font size of 16px). For example, 16px = 1rem, 24px = 1.5rem, and 32px = 2rem.