Wood heat calculators

Two calculators, both with their assumptions stated in the open — the same math the rest of the site uses, documented on the methodology page.

• Stove sizing calculator

  Square footage, insulation quality, and climate → the BTU/h output range to shop for, with links to matching stove classes.

• Wood heat cost comparison

  Your local cord wood, pellet, electricity, and natural gas prices → an honest dollars-per-million-BTU comparison of the four ways to heat.