You could try this
one instead
I've done Weight Watchers and they work in averages. I'm currently just under 70kg but really should be closer to 60kg so I am overweight. However 2 years ago I was almost 80kg so a lot better than I was, just need to lose a bit more.
For those who don't know what their cm height is you can go to
this one and then the original site mentioned to see how you go.