Tools
Furnace Optimizer
How many furnaces, how much wood, and how long — for any ore load or target output rate.
Output
10,000
Sulfur
Time (1 furnace)
1h 9m
Furnaces for 30m
3
Ore per slot
1,667
6 slots
Wood needed
10,000
Charcoal made
7,500
Smelt speeds (seconds per ore)
| Ore type | Small Furnace | Large Furnace | Electric Furnace | Wood / ore |
|---|---|---|---|---|
| Metal Fragments (from Metal Ore) | 5s · 12.0/min | 2.5s · 24.0/min | 1s · 60/min | 1 |
| Sulfur (from Sulfur Ore) | 5s · 12.0/min | 2.5s · 24.0/min | 1s · 60/min | 1 |
| High Quality Metal (from HQM Ore) | 10s · 6.0/min | 5s · 12.0/min | 2s · 30.0/min | 2 |
Per-ore smelt time and throughput (ore/min per slot) for each furnace. Electric is fastest and burns no wood; large furnaces are 2× small. HQM is the slowest and uses 2× wood. Your current selection is highlighted.
6 ore slots · wood · 2× speed. Times assume all ore slots run in parallel and enough wood is kept loaded. HQM smelts slower and burns 2× wood. Electric furnaces need ~5 rW and no wood.