Effective Health Calculator
Puts health and defences into one comparable number.
Effective health
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Total damage reduction — %
Damage taken from a 100-damage hit —
Reading this —
The formula
damage taken = (1 − armour ÷ (armour + k)) × (1 − reduction A) × (1 − reduction B) effective health = (health + shield) ÷ damage taken
The armour formula and its constant vary by game. Reductions in many games multiply rather than add.
What to watch out for
If your game gives a damage reduction percentage directly, set armour to 0 and use the reduction field.
Frequently Asked Questions
What does 50% reduction do?
It doubles effective health: 1,000 health becomes 2,000.
What does 100 armour do on a constant of 100?
1,000 health becomes 2,000.