Defense vs Offense Build Calculator

How to Use This Tool

Follow these steps to generate accurate build matchup results:

1. Select your game type from the dropdown to apply genre-specific damage and armor formulas.
2. Enter all offensive build stats in the Offensive Build Stats section. Use in-game values for accuracy.
3. Enter all defensive build stats in the Defensive Build Stats section. Ensure percentages do not exceed 100%.
4. Click the Calculate Build Matchup button to generate results, or Reset All Fields to clear inputs.
5. Use the Copy Results button to save your output to the clipboard for reference.

Formula and Logic

Calculations adjust based on your selected game type to reflect real-world game mechanics:

• Effective DPS: (Base Damage × (1 - Crit Chance + (Crit Chance × Crit Multiplier))) × Attack Speed × Defensive Damage Multiplier (armor, reduction, penetration)
• Effective Health: Max Health ÷ ((1 - Avoidance Chance) × (1 - Total Damage Reduction))
• Time to Kill (TTK): Effective Health ÷ Effective DPS
• Win Probability: Calculated based on expected damage output over a 60-second standard encounter, capped between 5% and 95%

Game-specific adjustments apply to armor multiplier calculations for Action RPG, Tabletop RPG, MOBA, and FPS titles.

Practical Notes

Gaming build calculations are subject to several real-world variables:

• Meta shifts and patch updates can change damage formulas, armor values, and stat caps. Always use the latest in-game values.
• RNG factors (critical hits, dodge/block rolls) are calculated using expected values. Actual match outcomes may vary per instance.
• Some games use diminishing returns on stats like critical hit chance or armor. This tool uses linear calculations unless adjusted by game type.
• Overlapping avoidance (dodge + block) is capped at 100% to reflect most game rules.

Why This Tool Is Useful

This calculator solves common pain points for gaming enthusiasts:

• Gamers can optimize character loadouts for ranked matches, raids, or PvP without manual math.
• Game designers can balance homebrew classes, monsters, or custom game modes using standardized stat comparisons.
• Streamers and content creators can quickly generate build stats for guides, tier lists, or live match analysis.
• Competitive players can simulate matchups against specific opponents to prep for tournaments or scrims.

Frequently Asked Questions

What game types are supported?

The tool supports four common game types: Action RPG (e.g., Elden Ring, Diablo), Tabletop RPG (e.g., D&D 5e), MOBA (e.g., League of Legends), and FPS (e.g., Valorant). Each uses genre-specific damage and armor formulas.

How accurate are the win probability results?

Results use expected value calculations for RNG-based stats (crit, dodge, block). Actual win rates may vary per match due to random rolls, but the tool provides a reliable baseline for build comparison.

Can I compare two offensive builds against each other?

This tool is designed for one offensive build vs one defensive build. To compare two offensive builds, run the calculator twice: first with Build A as offense and Build B as defense, then swap the stats.

Additional Guidance

For best results, follow these tips when using the tool:

• Use raw in-game stat values, not buffed or temporary bonus values, for consistent results.
• Test builds with multiple game type settings if playing cross-genre mods or custom game modes.
• Combine this tool with in-game practice to validate theoretical results against real match performance.
• Update your inputs after every game patch that changes core stat formulas or caps.