Here you can find all the known formulas and rates that is present in the game.
Health Points []
floor(8.5 * health * (level0.84) + 65)[]
- health - your health stat number
- level - your current level (not harvest level)
- floor - i.e. round down to the nearest whole number
Req. XP (Harvesting) []
5.28 * (level ^ 2) + 188.5 * level + 21[]
- level - your current harvesting level
- This formula should be correct, ±15XP (only tested for LV26 and below).
Quest Rewards (Gold) []
floor(100 * quest1.85)[]
- quest - your current quest level
- floor - i.e. round down to the nearest whole number
Stamina Cost[]
((SW-20)/5+1)*(SW-20)/2)-(SC-20)/5+1)*(SC-20)/2
- SW (Stamina Wanted) - Amount of stamina to be added
- SC (Stamina Current) - Amount of stamina you currently have now