Rust Furnace & Smelting Calculator
Enter your ore type, quantity, and furnace choice to see smelt time, wood needed, charcoal yield, and how many gunpowder batches you can craft.
Smelting Setup
1,000
Smelting Results
Smelt Time
41.7
minutes
Wood Needed
500
wood
Charcoal Yield
375
charcoal
GP Batches
12
×10 GP each
Furnace info — Small
18 slots, ~0.5 wood per ore. Load wood and ore in a ~1:2 ratio to minimise waste. 1 wood ≈ 2 ore smelted.
Load wood and ore in equal proportions to avoid wasted wood. 1 wood ≈ 2 ore smelted (approx).