Question 1

What is letter spacing in CSS?

Accepted Answer

Letter spacing (CSS property: letter-spacing) controls the space between individual characters in text. Also called tracking in typography, it increases or decreases the gap between letters for stylistic or readability purposes.

Question 2

What unit should I use for letter spacing?

Accepted Answer

em and rem are recommended because they scale relative to font size, maintaining proportions across different text sizes. px gives precise control but doesn't scale. For responsive design, prefer em or rem units.

Question 3

What is good letter spacing for headings?

Accepted Answer

Uppercase headings often look good with slightly positive tracking (0.05em to 0.15em). Body text usually uses normal or slightly negative tracking for readability. Large display text can use tighter spacing (-0.02em to -0.05em).

Question 4

How do I convert letter spacing between units?

Accepted Answer

1em equals the current font size. At 16px font size, 1em = 16px = 100%. So 0.1em at 16px = 1.6px. The tool automatically converts between px, em, rem, and percentage for you.