Craft Calculator

How the Rust craft calculator adds up a list

The Craft Calculator adds up a Rust craft list the way the game crafts it: in whole batches. Every item is rounded up to full crafts. Ingredients made on the way are pooled across the whole list before they are rounded, and the result splits into raw resources and the parts to craft first. RustPotato reads every recipe, batch size and craft time from the game files; a server with craft-speed or recipe plugins changes them.

Pooling keeps the total right. One craft of 5.56 Rifle Ammo takes 5 Gun Powder and one craft of Pistol Bullet takes 5. Pooled, that is 1 craft of 10 and nothing spare. Rounded separately, it would be 2 crafts of 10 and 10 spare, a whole craft of Gun Powder for nothing.

Workbench level and craft time in Rust

Craft time in Rust depends on the workbench you stand at. A recipe takes its full time at the level it asks for, half of it one level higher, and a quarter two or more levels higher. The calculator times the whole list at every bench level that can make it, without an Accelerated Workbench Upgrade, which cuts the time again. The Workbench Level 3 tech tree shows what the top bench unlocks.

Gun Powder in Rust raid crafts: where pooling and the workbench save the most

Most of the sulfur in a Rust raid craft goes into Gun Powder: 10 Gun Powder take 30 Charcoal and 20 Sulfur, so the charcoal in a raw total tells how much Gun Powder was made on the way. It is also the ingredient crafted most: the 1,000 Gun Powder in a Timed Explosive Charge take 100 crafts, 3 minutes 20 seconds at Workbench Level 1, 1 minute 40 seconds at Level 2 and 50 seconds at Workbench Level 3.

Which Rust components you can craft and which you must find

The 14 Rust components in the calculator split in two: seven can be crafted, so the calculator breaks them down to what you gather once you press their hammer, and seven cannot be crafted, so they stay on the raw list as they are. Players shorten the resource names too: frags for Metal Fragments, HQM for High Quality Metal, GP for Gun Powder and LGF for Low Grade Fuel.

• Crafted: Gears, Metal Pipe, Metal Spring, Metal Blade, Sewing Kit, Road Signs, Empty Propane Tank
• Found only: Tarp, Rifle Body, Sheet Metal, Rope, SMG Body, Tech Trash, Semi Automatic Body. Each of them also comes out of a recycler: see the Recycling Calculator.

Every ingredient with a recipe carries a small hammer. Components and Low Grade Fuel start on the raw list, counted as brought: press the hammer of the Gears you still have to craft and the totals add everything they cost. The rest starts crafted, under Made on the way: press the hammer of the Gun Powder from your last farm and it goes back to the raw list, the totals minus what it would have cost. Untick Craft the ingredients too and every one comes in as it is, while a hammer still crafts the one or two you pick.

A worked example: a raid kit of rockets

A raid kit of 10 Rockets is a 3-step craft in Rust. From scratch it takes 19,500 Charcoal, 14,000 Sulfur, 1,000 Metal Fragments, 400 Scrap, 225 Animal Fat, 75 Cloth and 40 High Quality Metal. The steps run Gun Powder, Low Grade Fuel and Metal Pipe first, then Explosives, then the Rockets. The list needs Workbench Level 3 and keeps one player's crafting queue busy for 16 minutes 29 seconds. Crafted one rocket at a time, the same kit would take 240 Animal Fat and 80 Cloth: pooled, its Low Grade Fuel takes 75 crafts instead of 80, which saves 15 Animal Fat and 5 Cloth.

Questions about crafting in Rust