About this calculator

A coal-fired forge burns ~3–5 kg/hr at working heat; coke ~2–3 kg/hr and runs cleaner. Bituminous coal is preferred for forging — it cokes itself.

Frequently asked questions

What does the Forge Coal/Coke Consumption do?

Blacksmith coke or coal needed per session. A coal-fired forge burns ~3–5 kg/hr at working heat; coke ~2–3 kg/hr and runs cleaner. Bituminous coal is preferred for forging — it cokes itself.

Is the Forge Coal/Coke Consumption free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Forge Coal/Coke Consumption?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified blacksmithing professional before committing to a purchase or a job.

What inputs does the Forge Coal/Coke Consumption need?

Enter values for: Forge hours, Fuel. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Forge Coal/Coke Consumption on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.