# Talk:Kilogram per cubic metre

WikiProject Physics (Rated Start-class, Mid-importance)
This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start  This article has been rated as Start-Class on the project's quality scale.
Mid  This article has been rated as Mid-importance on the project's importance scale.

Is the following comment correct (found on the "Kilogram per cubic metre" page)? "To convert from g/cm³ to kg/m³, multiply by 1000; divide by 1000 for the opposite conversion. A gram per litre is identical in value to kg/m³"

I was thinking it would be g * 1000, and cm * 100 (to covert to kg/m³). I would think kg/m³multiplied times 1000 would be g/mm³(mm instead of cm)? I'm no math wiz -- so I'm probably being clueless on this. Tesseract501@aol.com (27 August, 2005)

To go from kg/m³ to g/m³, you would multiply by 1000, since there are 1000g = 1kg
To go from g/m³ to g/mm³, you would divide by 1000³ since there are 1000mm = 1m
So you are correct that it's wrong but not quite as you said. Ian Cairns 02:42, 28 August 2005 (UTC)

=g/cm3 convert Kg/m3

=(1/1000)/(1/100)3 =1000