Picometre (American English picometer) is an SI measure of length that is equal to 10-12 of a metre. Its abbreviation is pm and is commonly used in measuring atomic-scale distances. Atom diameters are in the range from ~30 to 600 pm.
1 pm = 1 x 10-12 metre
1 pm = 1000 femtometre
100 pm = 1 ångström
1000 pm = 1 nanometre
See also:
1 x 10-12 metre