Formula

em = fm / 4232300000000

Quick Rough Maths

To get the Ems, divide the number of Fermis by 4.2 trillion

Fermis (fm) in 1 Em

There are 4232300000000 Fermis in 1 Em

Ems (em) in 1 Fermi

There are 0 Ems in 1 Fermi

Symbol: **fm**

Unit System: Non-SI metric

Unit System: Non-SI metric

The fermis is a unit of length in the non-SI metric system and uses the symbol fm.

One fermi is equal to 1×10−15m or 3.9370×10−14 in.

It is used to measure nuclear distances and was named after the Italian physicist Enrico Fermi (1901–1954). It has now been replaced with the SI-derived term femtometre.

Symbol: **em**

Unit System: Typography

Unit System: Typography

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.

10000fm = 0em

20000fm = 0em

30000fm = 0em

40000fm = 0em

50000fm = 0em

60000fm = 0em

70000fm = 0em

80000fm = 0em

90000fm = 0em

100000fm = 0em

110000fm = 0em

120000fm = 0em

130000fm = 0em

140000fm = 0em

150000fm = 0em

160000fm = 0em

170000fm = 0em

180000fm = 0em

190000fm = 0em

200000fm = 0em

210000fm = 0em

220000fm = 0em

230000fm = 0em

240000fm = 0em

260000fm = 0em

270000fm = 0em

280000fm = 0em

290000fm = 0em

300000fm = 0em

310000fm = 0em

320000fm = 0em

330000fm = 0em

340000fm = 0em

350000fm = 0em

360000fm = 0em

370000fm = 0em

380000fm = 0em

390000fm = 0em

400000fm = 0em

410000fm = 0em

420000fm = 0em

430000fm = 0em

440000fm = 0em

450000fm = 0em

460000fm = 0em

470000fm = 0em

480000fm = 0em

490000fm = 0em

510000fm = 0em

520000fm = 0em

530000fm = 0em

540000fm = 0em

550000fm = 0em

560000fm = 0em

570000fm = 0em

580000fm = 0em

590000fm = 0em

600000fm = 0em

610000fm = 0em

620000fm = 0em

630000fm = 0em

640000fm = 0em

650000fm = 0em

660000fm = 0em

670000fm = 0em

680000fm = 0em

690000fm = 0em

700000fm = 0em

710000fm = 0em

720000fm = 0em

730000fm = 0em

740000fm = 0em

760000fm = 0em

770000fm = 0em

780000fm = 0em

790000fm = 0em

800000fm = 0em

810000fm = 0em

820000fm = 0em

830000fm = 0em

840000fm = 0em

850000fm = 0em

860000fm = 0em

870000fm = 0em

880000fm = 0em

890000fm = 0em

900000fm = 0em

910000fm = 0em

920000fm = 0em

930000fm = 0em

940000fm = 0em

950000fm = 0em

960000fm = 0em

970000fm = 0em

980000fm = 0em

990000fm = 0em