Formulae

XP required per level

$XP_{Class}=\left\lfloor (15+{lvl}^{1.9}+11\times lvl)\times (1.208-\min\{0.164,{\frac {0.215\times {lvl}}{{lvl}+100}}\})^{lvl}-15\right\rceil$

$XP_{Skill}=$

$XP_{Smithing}=$

Damage taken per hit

$Damage=\left\lceil {\frac {{attack}_{enemy}-2.5\times {defense}^{0.8}}{\max\{1,1+{\frac {{defense}^{1.5}}{100}}\times {\frac {defense}{\max\{1,{attack}_{enemy}\}}}\}}}\right\rceil$

Alchemy

Liquid generation

$Water_{/hour}=(1+{\frac {decant_{\%}+P2W_{\%}+vial_{\%}}{100}})\times (1+{\frac {stamp_{\%}+(\sum _{character}(lvl)*2+4)^{0.65}}{100}})$

Multiply this by 1.5 if you have bleach cauldron.

Misc

Statues

${Statues}_{/lvl}=\left\lfloor lvl^{1.35}+1\right\rceil$

$Bonus=\left\lfloor Base*lvl\right\rceil$