HOW IT WORKS
How to use this tool
- 1Enter the incoming attack damage.
- 2Enter your total defense from armor and accessories.
- 3Pick your game mode and read the net damage.
Terraria
Terraria Armor Calculator
Calculate how much damage your Terraria defense blocks in Classic, Expert and Master mode.
Last updated:
Local browser processing • no upload required
Set attack, defense and mode to see exactly what gets through.
Damage after defense
- Net damage
- 70
- Damage blocked
- 30
Defense formulas follow the current Terraria damage reduction rules.
Next Creation Steps
Quick answer
How does defense work in Terraria?
Each defense point blocks half a damage point in Classic mode, three-quarters in Expert, and one full point in Master.
Key specifications
- Processing
- In your browser
- Tool files
- Processed on your device
- Access
- Free; no account required
- Result
- On-screen calculation; no file export
Sources
FAQ
FAQ
How does defense work in Terraria?
Each defense point blocks half a damage point in Classic mode, three-quarters in Expert, and one full point in Master.
What is the minimum damage a hit can deal?
Attacks always deal at least 1 damage, no matter how high your defense is.
Does defense work against every source?
Yes, defense applies to most damage sources, though some status effects bypass it.
How much defense can I realistically reach?
Late-game armor sets push past 100 defense with accessories and modifiers.
Which mode should I calculate for?
Use Expert or Master for hardcore playthroughs, where defense matters much more.