This calculator will take your current HP and Defence totals and the expected enemy attack ignore defence potential to calculate whether you have balanced your HP with Def efficiently. Thanks to HGCenty for developing the formula
To use the tool:
1) Enter your current HP and Defence totals
2) Enter the percentage of ignore defence you expect to face (i.e for Savage sets enter 25 or for Savage and Cruel enter 30)
3) Click "Calculate"
Your build will be analysed and it will identify the HP required for your build to be efficient in terms of Effective HP. This is based on the situations your champion may face.