Build An Ant Empire EFF Calculator
Multiply the EFF value currently displayed for your ant by a mutation multiplier from the item list. Use this as a quick comparison estimate.
Item list checked
Sources: All Things How mutation item reference (effects unverified in game) (Third-party source, published 2026-09-30)
Estimate EFF after a listed mutation
Enter the current EFF shown in game, then choose a mutation multiplier from the item list.
Simple multiplier estimate
Estimate only: this applies the selected listed multiplier to your input. Item effects are marked unverified on this site. The calculator does not reproduce a confirmed game formula or predict Cash, production per minute, or other effects. Result is displayed to at most 6 decimal places.
How to use the estimate
Read the current EFF on the ant, enter that value, and select the mutation multiplier you want to compare. For example, an input of 100 and a listed 1.35脳 multiplier produces a simple estimate of 135.
Mutation values in the referenced item list are marked unverified here. A displayed EFF may include other effects or game rules that this calculation does not model. Confirm the live potion description and the ant's resulting EFF before spending.
Review item prices and effects 路 Read mutation basics 路 Open the number converter
EFF calculator FAQ
How does this EFF calculator work?
It multiplies the current EFF you enter by the selected mutation multiplier listed in our item reference. It is a simple estimate and is not a verified in-game formula.
Are the mutation multipliers verified?
No. The local item list marks these effects unverified. Check the live game UI before using a potion.
Does the result show Cash per minute or exact ant earnings?
No. The tool only multiplies your EFF input by one selected listed multiplier; it does not estimate Cash or production per minute.