Bugl — code interview practice that feels like a game

Loading lesson path

Flash cards

Review the key moves

1/3

Core idea

What is the main idea behind PX to EM Conversion?

Lesson checks

Practice each idea before moving on

Short Mimo-style checks built from this lesson's code, terms, and sequence.

1Quick choice

Which statement best captures the main point of this lesson?

2Order

Put the learning moves in the order that makes the concept easiest to apply.

In the table below, select a body font size in pixels (px) to display a complete "px to em and percent" conversion table.

- Set a default font size (usually 16px) - Then, convert a pixel value to em, based on the default size - Or, convert an em value to pixels, based on the default size

PX to EM Converter

Set a default font size (usually 16px)
Then, convert a pixel value to em, based on the default size
Or, convert an em value to pixels, based on the default size

Body Font Size

In the table below, select a body font size in pixels (px) to display a complete "px to em and percent" conversion table.

Tip

The default font size is usually 16px.

What is the difference between PX, EM and Percent?

Pixel is a static measurement, while percent and EM are relative measurements. Percent depends on its parent font size. EM is relative to the current font size of the element (2em means 2 times the size of the current font). So, If the font size of body is 16 pixels, then 150% will be 24 pixels (1.5 * 16), and 2em will be 32 pixels (16 * 2). Look at CSS Units for more measurement units.