Pixels to rem, for when a hardcoded stylesheet is being moved onto a type scale. The base is whatever font-size the root of your page ends up at, which is 16px until somebody changes it.

PixelsRemRoot size

1.5rem

The ones you keep looking up

px	rem	Copy
1	`0.0625rem`
2	`0.125rem`
4	`0.25rem`
8	`0.5rem`
12	`0.75rem`
14	`0.875rem`
16	`1rem`
18	`1.125rem`
20	`1.25rem`
24	`1.5rem`
32	`2rem`
40	`2.5rem`
48	`3rem`
64	`4rem`
80	`5rem`
96	`6rem`