you know it depend of many element
- Speed rate desired
- The environment
- the Area
i don’t think that this kind of tools exist , but
Generally commercial recommend
1 AP for 20 users
1 AP for 200 m²
with your own experience you can create an EXEL script how do this work.
And as said by capplari, VisuelRF is a very good tool, and you have to know that after the positioning it give you a bull of materiel how is very useful