What is 20em in Picometres?

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What is 20 Ems (20em) in Picometres (pm)?

What is 20em in pm? Convert 20 Ems (20em) to Picometres (pm) and show formula, brief history on the units and quick maths for the conversion.

Enter Ems to convert to Picometres


Quick Reference for Converting Ems to Picometres

Formula
pm = em x 4232300000
Quick Rough Maths
To get the Picometres, multiply the number of Ems by 4.2 billion
Ems (em) in 1 Picometre
There are 0 Ems in 1 Picometre
Picometres (pm) in 1 Em
There are 4232300000 Picometres in 1 Em

Unit Information

Em
/ɛm/
Symbol: em
Unit System: Typography

What is the Em?

The em is a unit of length in the field of typography and uses the symbol em.

It is a "relative" unit and equals the currently specified point size. For example, 1 em in a 24-point typeface is equal to 24 points. This allows a typographer to specify text size relative to a base figure.

In metal type, the em was equal to the line height of the metal body. This meant the physical size of the letter could not exceed the em. In digital type, the em is a grid of arbitrary resolution so can be scaled to any point size for screen or print.

Picometre
/pē′kə-mē′tər/
Symbol: pm
Unit System: SI

What is the Picometre?

The picometre is a unit of length and is a multiple of the SI unit metre. It uses the symbol pm.

It represents one trillionth of a metre, or one hundredth of an Ångström.

Because the picometre is so small, its use is restricted almost entirely to chemistry, quantum physics and particle physics. Atoms are typically 62 pm and 520 pm.

LISA (Laser Interferometer Space Antenna) is a probe planned for launch in 2034 to detect gravitational waves in space. Its measures these displacements with an accuracy of up to 20 pm over a distance of 2,500,000,000 m.


Conversion Tables for Ems (em) to Picometres (pm)