Decay timing
Rust Decay Calculator
Estimate the remaining no-protection window from building grade and current health.
Patch 2026.07 · Updated 2026-07-11
Current block
Decay estimate
- Remaining time
- 5h 0m
- Full-health baseline
- 5 hours
Standard-rate estimate. Modded server settings can change the result.
Grade comparison
Full-health decay windows
| Grade | Time |
|---|---|
| Twigs | 1 hours |
| Wood | 3 hours |
| Stone | 5 hours |
| Sheet Metal | 8 hours |
| Armored | 12 hours |
Decay guide
Mixed grades do not disappear together
Read the baseline windows and use current health to estimate which layer goes first.
Quick answers
Frequently asked questions
How long does stone take to decay without protection?
The standard full-health baseline is 5 hours.
How long does armored take to decay without protection?
The standard full-health baseline is 12 hours.