here is a chart on the conversions

kg/mm to lbs/in
-----------------------------
16 = 896
15 = 840
14 = 784
13 = 728
12 = 672
11 = 616
10 = 560
9.0 = 504
8.5 = 476
8.0 = 448
7.5 = 420
7.0 = 392
6.5 = 364
6.0 = 336
5.5 = 308
5.0 = 280
4.5 = 252
4.0 = 224
3.0 = 168
2.0 = 112

or you can just type it in to google like so (just fallow the link)
http://www.google.com/search?num=100...in&btnG=Search

 

Or you can just divide or multiply by .0179

 

Or my favorite is to use this:
http://www.hraefn.net/projects/spring_rates.php

Converts between all spring rate formats

 

i just use google.
http://www.google.com/search?hl=en&q...US316&ie=UTF-8

 

multiply kg by 56 to get lbs

 

It makes a difference you know, whether you divide or multiply. Divide 500 lb/in by .0179 and see what you get.

This.