Okay, I hope this clarifies things. Doing the conversion from kg to pounds first allows these 100% / 50% PSI pressure values rule of thumb to work. Most suspension pumps have multiple scales. Use the PSI scale to set the pressure in PSI at half your body weight in pounds.
Body weight 180 lbs. or 81.6kg or 12.85 stone
Front fork starting pressure setting 90psi or 6.2 bar
Rear shock starting pressure setting 180 ps or 12.5 bar ( I usually end up adding 10-20 pounds extra for the second battery, horn, bag, water, tools, tubes, pump, etc. that I am carrying along.)