Warframe Ehp Calculator

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Expert Review: This calculator is validated and maintained by David Chen, Game Economy Analyst.

The Warframe EHP (Effective Health Pool) Calculator helps you determine your Warframe’s true survivability against incoming damage, factoring in your Armor, Health, and Shields.

Warframe EHP Calculator

Effective Health Pool (EHP)
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Warframe EHP Calculator Formula

$$DR = \frac{\text{Armor}}{\text{Armor} + 300}$$ $$EHP = (\text{Base HP} \times \frac{1}{1 – DR}) + \text{Base Shield}$$ $$EHP = \text{HP} \times (1 + \frac{\text{Armor}}{300}) + \text{Shield}$$
Source: Warframe Wiki – Effective Health | Warframe Builder – EHP Guide

Variables

  • Base Health (HP): The Warframe’s total health value, including health mods like Vitality.
  • Base Shield (S): The total shield value, including shield mods like Redirection.
  • Base Armor (A): The Warframe’s total Armor value from base stats and mods like Steel Fiber.
  • Effective Health Pool (EHP): The total damage required to kill the Warframe, taking Armor-based damage reduction into account.

What is Warframe EHP?

Effective Health Pool (EHP) is a metric used by Warframe players to gauge a build’s overall durability. It’s crucial because enemies deal damage directly to your health, and Armor only applies its damage reduction to health and companion health, not shields.

EHP accounts for the damage reduction (DR) provided by Armor. For example, if a Warframe has 50% DR from Armor, it effectively doubles the life of its Health pool. The EHP calculator sums the raw Shield value with the Armor-enhanced Health value to give a single number for comparison.

How to Calculate Warframe EHP (Example)

  1. Determine Base Values: A Valkyr has 100 Health, 100 Shields, and 400 Armor.
  2. Calculate Damage Reduction (DR): $\text{DR} = \frac{400}{400 + 300} = \frac{400}{700} \approx 0.5714$ (57.14% DR).
  3. Calculate Health EHP: The multiplier is $1 + \frac{400}{300} \approx 2.3333$. $\text{Health EHP} = 100 \times 2.3333 = 233.33$.
  4. Calculate Total EHP: Add the Shield value. $\text{Total EHP} = 233.33 + 100 = 333.33$.

Frequently Asked Questions (FAQ)

  • How does Armor affect EHP? Armor directly increases the EHP of your Health pool by mitigating incoming damage. More Armor equals higher damage reduction, which mathematically scales your Health pool.
  • Is Shield considered part of EHP? Yes, Shields are considered part of the raw EHP calculation. However, Armor does not protect Shields, which is why EHP calculations are often focused on maximizing Health and Armor for long-term survival against sustained damage.
  • What is the maximum EHP possible in Warframe? Due to the scaling nature of Armor mods and certain Warframe abilities (like Nidus’s passive or ability-based damage reduction), the theoretical EHP limit is extremely high, especially when considering the use of abilities that provide multiplicative damage reduction.
  • Why is my in-game EHP different from the calculator? The calculator uses a basic EHP formula. It does not account for complex mechanics like Shield Gating, specific Warframe abilities that grant flat damage reduction (e.g., Rhino Skin), or unique Mod combinations.
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