How many C4 do you need for a stone wall in Rust?

A stone wall has 500 health: 2 C4 (4,400 sulfur), 4 rockets, 10 satchels or 182 explosive rounds.

How many rockets for an HQM wall?

An HQM wall has 2,000 health: 15 rockets (21,000 sulfur) or 8 C4 (17,600 sulfur).

How many C4 for a sheet metal and an armored door?

Sheet metal door: 1 C4, 2 rockets or 4 satchels; armored door: 3 C4 or 5 rockets.

What is cheaper in sulfur: C4 or rockets?

On a stone wall, C4 costs 4,400 sulfur and rockets cost 5,600; on an HQM wall it is 17,600 versus 21,000. The calculator marks the cheapest method for every target.

Why break walls from the soft side?

The hard (outer) side of a wall is protected against melee hits and bullets: a wooden wall takes 100 hits with a wooden spear from the soft side and 1,000 hits from the hard side. For explosives the side hardly matters.

Tool

Rust raid calculator

How many C4, rockets, satchels, explosive rounds, fire and spears you need for walls, doors and the tool cupboard, how much sulfur it costs and which set is cheapest for a path through the base.

What we break

What we break it with

High External Wooden Wall

500 health

Explosives

Cheapest in sulfur

3 × Incendiary Rocketfrom 2 to 3 in server tests

Fastest without sulfur

17 × Molotov Cocktailfrom 15 to 20 in server testsin 5:20

With siege weapons: 6 hits, Battering Ram, in 0:27

All methods

Method			Other resources
Explosive 5.56 AmmoCheapest	× 96			5:36
Satchel Charge	× 6			10:48
High Velocity Rocket	× 18			9:00
Rocket	× 3			9:30
Beancan Grenade	× 36			13:12
C4	× 2			11:00
F1 Grenade	× 378			1:40:48
40mm HE Grenade	× 16	—	—	—

Data from Rust server build 25823813, checked October 9, 2026

Raid table

How many C4, rockets, satchels and explosive rounds walls, doors and the tool cupboard take; sulfur under each number

What we break
Wooden Wall250 health	12,200	22,800	31,440	481,200
Stone Wall500 health	24,400	45,600	104,800	1824,550
Sheet Metal Wall1,000 health	48,800	811,200	2311,040	3999,975
HQM Wall2,000 health	817,600	1521,000	4622,080	79819,950
Wooden Door200 health	12,200	11,400	2960	18450
Sheet Metal Door250 health	12,200	22,800	41,920	631,575
Armored Door1,000 health	36,600	57,000	157,200	2506,250
Wood Double Door200 health	12,200	11,400	2960	18450
Sheet Metal Double Door250 health	12,200	22,800	41,920	631,575
Armored Double Door1,000 health	36,600	57,000	157,200	2506,250
Garage Door600 health	24,400	34,200	94,320	1503,750
Metal Shop Front750 health	36,600	68,400	188,640	3007,500
Ladder Hatch250 health	12,200	22,800	41,920	631,575
High External Wooden Wall500 health	24,400	34,200	62,880	962,400
High External Stone Wall500 health	24,400	45,600	104,800	1824,550
High External Wooden Gate500 health	24,400	34,200	62,880	962,400
High External Stone Gate500 health	24,400	45,600	104,800	1824,550
Tool Cupboard100 health	12,200	11,400	1480	9225
Auto Turret1,000 health	24,400	45,600	41,920	1002,500
SAM Site1,000 health	24,400	45,600	41,920	2005,000

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Found a mistake or inaccuracy?

What we break

What we break it with

High External Wooden Wall

All methods

Raid table

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