1 E-15 m



To help compare different orders of magnitude this page lists lengths between 10⁻¹⁵ m and 10⁻¹⁴ m (1 fm and 10 fm).

Distances shorter than 1 fm

• 1 fm = 1 femtometre = 1,000 attometres
• 1.5 fm — diameter of the proton
• 2.81794 fm — classical electron radius

Distances longer than 10 fm

See also

• Femtometre
• Orders of magnitude (length)