Noise Levels at a glance
| Quietest | Crouching: 6 |
| Walking | 14 |
| Sprinting | 32 (more than twice walking) |
| Hammering | 55 (so building is loud) |
| Loudest | Generator: 110 |
| Unit | The guide gives bare numbers, no unit |
| Source | game.guide survival guide; not checked in footage by us |
Noise by action (game.guide)
| Action | Noise |
|---|---|
| Crouching | 6 |
| Walking | 14 |
| Low radio | 22 |
| Falling | 24 |
| Knocking | 30 |
| Sprinting | 32 |
| Melee hit | 35 |
| Dragging furniture | 38 |
| Dropping metal | 45 |
| Hammering | 55 |
| Breaking glass | 70 |
| Shouting | 70 |
| Loud radio | 90 |
| Generator | 110 |
What the numbers tell you
The list runs from 6 to 110, and the big jumps are the ones you control. A loud radio (90) is far above a low one (22), and the generator (110) is the loudest thing on the list. game.guide's page on the basement says the generator charges batteries but "calls them".
Two things you do every day sit in the middle: dragging furniture (38) and hammering (55). That matters on Day 3, when you drag the couch to brace the door, and when you build the rooftop shelter.
What the game itself says
The game's own text agrees on the direction, even without numbers. The Custom Music Radio game pass description says the infected hear any battery radio, and the in-game rule book says to listen before opening a door and that noise travels. Our radio page covers the controls.
We haven't measured the numbers in play, and we don't know the distance at which each one is heard. Treat the table as a ranking of how risky each action is.
Tips
- Crouch (6) when you pass doors you don't want to wake; walking is 14, sprinting 32.
- Keep the radio low (22), not loud (90).
- Do the hammering jobs (55) while the hallway is quiet, not when something is at the door.
- Don't shout (70) or break glass (70) unless you mean to.
- Leave the generator (110) for when you can afford the attention.
FAQ
What makes the most noise in 30 Floors Up?
According to game.guide, the generator at 110, then a loud radio at 90.
How loud is sprinting?
32, against 14 for walking and 6 for crouching (game.guide).
Is crouching quiet?
Yes, it is the lowest on the list at 6.
What do the numbers mean?
The guide doesn't say. We read them as a ranking, not a distance.
More 30 Floors Up pages
- 30 Floors Up Radio: How to Use the Battery Radio
- 30 Floors Up Barricade: How to Brace the Door on Day 3
- 30 Floors Up Difficulty, Lobbies and Saves
- 30 Floors Up Bolt Cutters: Where to Find Them
- 30 Floors Up beginner guide
- 30 Floors Up codes
- 30 Floors Up wiki: live stats
Sources
Checked Nov 13, 2026. Community wikis are edited by players, so numbers marked “per” one wiki may change after an update.