What websites can help me with understanding converting units?

Question

for ap physics b. like, how to better understand converting things and when to. thanks in advance

Answer 1

there are plenty of web sites, like

http://www.convertworld.com/en/energy

but that won't help you to learn.

Use dimensional analysis. And check that they cancel and give you the desired units in the answer.

ex:

0.0072571 g/mm³ x 1kg/1000g x 1000³mm³/m³ = 7257 kg/m³