In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

Big Picture BTU Online Calculator

Calculate BTUs used and fuel costs saved in your browser!

Select wood species from menu. Fill in and edit anything in white to suit your needs.

Wood Type Cords Burned MMBTU Burned
Assumed Wood Burn Efficiency:
Assumed Oil Furnace Efficiency:
Assumed Propane Burn Efficiency:
Local Oil Price (per gal):
Local Propane Price (per gal):
Total Cords Burned:
Total MMBTU Burned:
Avoided Oil Use (in gals):
Avoided Oil Cost:
Avoided Propane Use (in gals):
Avoided Propane Cost:

  1. Rebecca Slaton
    Rebecca Slaton
    Great resource. Easiest to use that I have seen online.
  2. 94BULLITT
    This is a great resource to see how money you save by burning wood. It would be nice if you could add cost per cord for those that buy wood so the calculator would show how much they saved over another type of heat.