About This Calculator

The Melvor Idle Minimum HP Calculator answers a simple but vital question: what's the lowest amount of health I need to avoid being one-shot by a monster? Instead of just telling you "yes" or "no" on survival, this tool calculates the precise HP number you need to aim for. By inputting a monster's max hit and your defensive stats, it determines the exact health threshold required for your Auto Eat to trigger before a killing blow can land. This allows for efficient stat planning, helping you decide whether to focus on more health or more damage reduction for your next grind.

How to Use

1. Find the 'Max Hit' of the monster you want to fight from the Wiki or in-game.
2. Enter your character's total Damage Reduction (DR) percentage.
3. Enter your desired Auto Eat threshold percentage.
4. The calculator will instantly show the minimum HP you need to have.

Pro Tip

The golden rule of idling is that your Auto Eat Threshold (in HP) must be higher than the maximum damage you can take. If the "Max Hit You'll Take" is 479, your "Auto Eat Activates At" value must be at least 480. This calculator does that math for you!