What is 3100nm in Ems?

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What is 3100 Nanometres (3100nm) in Ems (em)?

What is 3100nm in em? Convert 3100 Nanometres (3100nm) to Ems (em) and show formula, brief history on the units and quick maths for the conversion.

Enter Nanometres to convert to Ems


Quick Reference for Converting Nanometres to Ems

Formula
em = nm / 4232300
Quick Rough Maths
To get the Ems, divide the number of Nanometres by 4.2 million
Nanometres (nm) in 1 Em
There are 4232300 Nanometres in 1 Em
Ems (em) in 1 Nanometre
There are 0 Ems in 1 Nanometre

Unit Information

Nanometre
/ˈnanə(ʊ)ˌmiːtə/
Symbol: nm
Unit System: SI

What is the Nanometre?

The nanometre is a unit of length and is a multiple of the SI unit metre. It uses the symbol nm.

1 nm is equal to one one-billionth of a metre. (Nano is the prefix for one billionth). It is used to express dimensions on an atomic scale for example a helium atom has a radius of approximately 0.03nm.

The nanometre was previously known as the millimicrometre (or the millimicron).

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.


Conversion Tables for Nanometres (nm) to Ems (em)