how to convert

[ugo]

How do I convert lbs/cu.ft3 to kg/m3
how do I convert PSi to mpa

[convert-me.com]

How do I convert lbs/cu.ft3 to kg/m3
how do I convert PSi to mpa

You can convert psi to mpa here: http://www.convert-me.com/en/convert/pressure
We don't have a density conversion calculator yet, but to convert lbs/ft3 to kg/m3 you can multiply your amount by 16.03

[spider]

Here's the link to the lbs/cu.ft3 to kg/m3 conversion table:

http://www.aqua-calc.com/convert/density/pound-per-cubic-foot-to-kilogram-per-cubic-meter

and here's the link to "one to all" density conversions:

http://www.aqua-calc.com/one-to-all/density