Orders of
magnitude (length)

in E notation

0 m
1 E-24 m
1 E-23 m
1 E-22 m
1 E-21 m
1 E-20 m
1 E-19 m
1 E-18 m
1 E-17 m
1 E-16 m
1 E-15 m
1 E-14 m
1 E-13 m
1 E-12 m
1 E-11 m
1 E-10 m
1 E-9 m
1 E-8 m
1 E-7 m
1 E-6 m
1 E-5 m
1 E-4 m
1 E-3 m
1 E-2 m
1 E-1 m
1 E0 m

1 E+1 m
1 E+2 m
1 E+3 m
1 E+4 m
1 E+5 m
1 E+6 m
1 E+7 m
1 E+8 m
1 E+9 m
1 E+10 m
1 E+11 m
1 E+12 m
1 E+13 m
1 E+14 m
1 E+15 m
1 E+16 m
1 E+17 m
1 E+18 m
1 E+19 m
1 E+20 m
1 E+21 m
1 E+22 m
1 E+23 m
1 E+24 m
1 E+25 m
1 E+26 m

Distances shorter than 1 fm

• 1 fm = 1 femtometre = 1,000 attometres
• 1. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International 5 fm — diameter of the proton
• 2. The proton ( Greek πρῶτον / proton "first" is a Subatomic particle with an Electric charge of one positive 81794 fm — classical electron radius

Distances longer than 10 fm