Formulae

It needs to be determined what formulas are no longer accurate

This page contains a listing of various formulae for Earth Empires.

Note: Some of these are old formulas, and need to be updated. This list does not include every formula either. Those highlighted in green are as accurate as possible. A good player does not have to know all the formulas, but a basic understanding helps.

_{Most formulae use standard rounding, but some, like networth, use truncation.}

General Formulas

Calculating	Formula
Per Capita Income (PCI)	22.5 * (1 - Taxrate) * (1 + ((Networth/Land)/90000)) * (1 + (2 * (Ent/Land))) * BusTech * GvtPCIBonus
Revenue	PCI * Pop * Taxrate
Construction Cost	3 * Land + 1500
Destruction Cost	0.2 * (3 * Land + 1500)
Rebuilding Cost
Oil Consumption	(Troops + Jets + Tanks)/25
Buildings Per Turn	(CS/4 + 5) * GvtContrBonus
Military Upkeep	Troops Upkeep: Troops * .11 * MilTech% * (1 + Networth/40000000) * GvtBonus * Constant Jets Upkeep: Jets * .14 * MilTech% * (1 + Networth/40000000) * GvtBonus * Constant Turrets Upkeep: Turrets * .18 * MilTech% * (1 + Networth/40000000) * GvtBonus * Constant Tanks Upkeep: Tanks * .57 * MilTech% * (1 + Networth/40000000) * GvtBonus * Constant Spies Upkeep: Spies * 1 * MilTech% * (1 + Networth/40000000) * GvtBonus * Constant Constant = If MilBases/Land < .295 Constant = 1 - 1. 3 *(MilBases/Land) Else (that is, if the number of MilBases built is more than 29.5% of your land) Constant = 0.61
Alliance Costs	Defensive Allies: DefAllies * Networth * 0.002 (0.2% of NW each) Offensive Allies: OffAllies * Networth * 0.002 (0.2% of NW each) Intelligence Allies: IntelAllies * Networth * 0.0015 (0.15% of NW each) Research Allies: ResAllies * Networth * 0.0015 (0.15% of NW each) Trade Pacts: TradePacts * Networth * 0.0005 (0.05% of NW each) GDI Costs (Theocracy): Land * 8 GDI Costs (All Others): Land * 4 Declare War Costs: Land * 10
GDI Penalty	Because of the defensive nature of the alliance, one side effect of GDI is 10% lower gains from your attacks.
Land Upkeep	Land Upkeep = Land * 10
Total Expense	Military Upkeep Costs + Alliance Upkeep Costs + Land Upkeep Costs
Networth	(Troops * 0.5) + (Jets * 0.6) + (Turrets * 0.6) + (Tanks * 2) + (Spies * 1) + (Tech * 2) + (Land * 45) + (Buildings * 35) + (Money / 20000) + (Food/1000) + (Missles * 2500) + (Pop/6) + (Oil/100)
Food Production	(Farms * 5.3) + (Unused Acres*0.4) * GovFoodBonus * AgriTech
Food Consumption	(Pop * 0.03) + (Spies * 0.005) + ((Troops + Jets + Turrets) * 0.001) + (Tanks * 0.003)
Food Decay	Bushels * 0.001
Technology Percentages	BaseTech + (MaxTech - BaseTech) * GovtBonus * (1 - Exp(-Effective * TechPoints / (C1 + (C2* Land))))
Tech Per Turn	TechPerTurn=Round(0.17*Labs*(1+Labs/Land)+3,0)
Military Formulas
SPAL (Spies Per Acre Land)	(Spies*GovtBonus*Spytech + 1/4 AlliesSpies)/Land
Standard Strike Strength	WeaponsTech% * GovtBonus * Readiness * (Troops + Jets*2 + Tanks*4) + min(WeaponsTech% * GovtBonus * Readiness * (Troops + Jets*2 + Tanks*4), 0.25 * (AlliesTroops + AlliesJets*2 + AlliesTanks*4)) where min(value1,value2) = lower of the two values
Planned Strike Strength	SS Strength * 1.5

Networth

The formula for networth is simple. Each resource is multiplied by a constant, either rounded or truncated, then added together.

Networth = Troops*0.5+Jets*0.6+Turrets*0.6+Tanks*2+Spies*1+Tech*2+Land*45+Buildings*35+Money/20000+Food/1000+Missles*2500+Pop/6+Oil/100

_{The above formula does not include resource specific rounding or truncating.}

Switching Governments

If your current government is a Monarchy then there is no penalty for changing to another form.

When changing from any other form of government, there is are losses incurred to your countries resources during the change.

This loss is a percentage of all cash, military, technology and buildings. Starting at 14%, this number increases based on your networth (NW) with the following formula:

pre

NW < 10.5M: 14% losses

12M < NW < 30M: (14+25*(NW-10.5M)/18)% losses

NW > 30M: 39% losses