One stove, three floors and full basement (no entrance to home, bilko entrances only, but never gets much different from 50 degrees year round, don't heat it), first two floor 1428 sq ft, many windows, cold climate, exposed site; third floor somewhat less than 1428 square feet.
Have electric baseboard available but never use it. The breakers are not on. Have a profoundly handicapped brother I care for, so nights keep a small electric heater in his bedroom, since I need to keep the door closed at night. Otherwise, wood is my sole heat source. Do not keep the entire house at 70. Keep the first floor warm, push colder air by fan down the stairwell. Keep the bedroom floors progressively cooler, 2nd to 3rd floors. Each floor 5 to 7 degrees cooler than the one below at this time of year. Our nighttime outdoor temps can range from about 5F to -25F at night, plus wind. I don't push my stove at all. If I needed to keep the upper floors warmer I easily could, but would use more wood.
Start fires in September (shoulder season) and sometimes light them into June. But use branches, twigs, stuff I need to get rid of from windfall and tops of trees, some uglies until sometime in November, when I start needing to heat 24/7 and begin using my stacks, so don't actually know how much wood I use.
Have to burn seriously, high heat production, 24/7 from sometime in November to sometime in March or April, depending on the year. This year has been bitterly cold. I burned about 3/5 of one stack, until I got to some wood I want to keep for next winter, then moved to the next stack. Have about a face cord left of that stack. So, between the two cords I have started, I guess I have about just over 2/3 cords left, so I have burned 1 1/3 cords from my stacks plus the shoulder season stuff. Probably equivalent of over two cords total, but hard to know and have not reduced my stacks by that much.
Despite the bitterly cold temps we are experiencing, we are getting enough added sunlight with the longer days, and some sunny ones for a change, to get significant solar gain during the days, which goes a long way to reducing heating load from here out.