If i wear a size 36 waist in mens jeans, what size would I wear in womens jeans? I think Its 16 - 18 Is that right?

I think about 14-16

google it.

Probably a size 16. Usually the waist measurement on jeans is a couple of inches more than your natural wastline because pants tend to sit more at the navel. For example, size 36 jeans would fit a woman with a 34 inch waistline, which is a misses size 16.HTH : )