From Melvor Idle
This page is up to date (v0.15.4).

The Hitpoints skill determines the maximum amount of Hitpoints the player can have and their passive regeneration rate. The player's maximum Hitpoints are calculated by multiplying the Hitpoints skill level by 10. Hitpoints experience can be earned by dealing damage to Monsters. 0.133 XP is awarded per point of damage done to a monster. This experience can be increased by 7% by equipping the Gold Emerald Ring.

Hitpoints are passively regenerated once every 10 seconds, with 1 Hitpoint (HP) being gained per interval by default. This amount is increased by 1 for every 10 levels in Hitpoints, and by an additional 10 HP if the Hitpoints Skillcape is equipped. Equipping the Gold Ruby Ring increases this amount by 10%. The Rapid Heal Prayer doubles the amount. Regeneration Potions provide a 3-12% chance to double the amount. These effects are multiplicative. Hitpoints may also be replenished by eating Food. Raising Hitpoints to level 99 will unlock the Hitpoints Skillcape for purchase from the Shop.

Melvor Idle version v0.15.4 (Released: 26th June 2020)
Attack (skill).svg Attack
Strength (skill).svg Strength
Defence (skill).svg Defence
Hitpoints (skill).svg Hitpoints
Ranged (skill).svg Ranged
Magic (skill).svg Magic
Prayer (skill).svg Prayer
Slayer (skill).svg Slayer
Woodcutting (skill).svg Woodcutting
Fishing (skill).svg Fishing
Firemaking (skill).svg Firemaking
Cooking (skill).svg Cooking
Mining (skill).svg Mining
Smithing (skill).svg Smithing
Thieving (skill).svg Thieving
Farming (skill).svg Farming
Fletching (skill).svg Fletching
Crafting (skill).svg Crafting
Runecrafting (skill).svg Runecrafting
Herblore (skill).svg Herblore
Guides: Man (thieving).svg Beginners Guide Question.svg FAQ Bank Slot (upgrade).svg Bank Combat.svg Combat Mastery.svg Mastery Coins.svg Money Making Shop header.svg Shop Easter.svg Easter Eggs
Reference Tables: Items, Equipment, Experience Table, Upgrading Items, Chest Loot Tables, Monsters, Monster Loot Tables