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Firewood Calculator

Calculate how many cords of firewood you need for winter. Compare 10 wood types by BTU output. Get cost estimates vs propane, gas, and electric heating.

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How to Use Firewood Calculator

  1. 1Enter home size and insulation quality
  2. 2Set winter months and heating use
  3. 3Compare wood types by BTU
  4. 4View cords needed and cost

Frequently Asked Questions

A well-insulated 2,000 sqft home using wood as primary heat needs 3-5 cords for a 5-month winter. Supplemental heating needs 1-2 cords.

A cord is a stack 4×4×8 feet, totaling 128 cubic feet. A face cord is 4×8 but only 16 inches deep — about 1/3 of a full cord.

Dense hardwoods burn longest: oak (24+ million BTU/cord), hickory (28 million), and maple (24 million). Softwoods like pine burn fast but produce more creosote.

The Firewood Calculator is a free online tool that lets you calculate cords of firewood needed for winter heating with btu estimates and cost comparison. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.

Using the Firewood Calculator is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. No downloads, installations, or sign-ups are required. The tool runs directly in your web browser for maximum convenience.

Yes, the Firewood Calculator is 100% free to use with no limitations. There is no registration required, no daily usage caps, and no hidden fees. You can use it as many times as you need.

The Firewood Calculator uses industry-standard formulas and algorithms to deliver reliable results. While the tool is designed for accuracy, results should be used as estimates and guidance. For critical decisions, always consult a qualified professional.

Yes, after running your calculation you can copy the results to your clipboard or take a screenshot. The Firewood Calculator displays a detailed breakdown so you can easily record or share your numbers. No account is required to use or save results.

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About Firewood Calculator

Calculate how many cords of firewood you need for winter. Compare 10 wood types by BTU output. Get cost estimates vs propane, gas, and electric heating.

NexTool's Firewood Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.

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Cords Needed
3.00
0.60 /month
Face Cords
9.0
384 cu ft
Total BTU
87.3M
Oak (White)
Estimated Cost
$900
$300/cord
Heating Cost Comparison (Same BTU Output)
Fuel TypeEst. Costvs Firewood
Firewood (Oak (White))$900—
Propane ($2.50/gal)$2,385+165%
Natural Gas ($1.20/therm)$1,048+16%
Electric ($0.13/kWh)$3-100%
Firewood Reference Guide
Wood TypeBTU/Cord (M)Cost/CordSplittingNotes
Oak (White)Selected29.1$300ModerateExcellent heat, burns slow and steady
Oak (Red)27.3$280ModerateGreat all-around firewood
Maple (Sugar)29.0$310ModerateHot, long-burning coals
Hickory30.6$320HardHottest burning common hardwood
Ash24.0$250EasyEasy to split, burns clean
Birch23.4$240EasyBurns fast, good kindling
Cherry20.4$260EasyPleasant aroma, moderate heat
Pine (White)15.8$180EasyBurns fast, more creosote, use for kindling
Douglas Fir20.7$200EasyGood softwood option
Elm24.5$220Very HardStringy grain, hard to split
Firewood Quick Facts
Full Cord
4' x 4' x 8'
128 cubic feet of stacked wood
Face Cord
4' x 8' x 16"
1/3 of a full cord
Seasoning Time
6-12 months
Split and stack for best results
Moisture Target
< 20%
Use a moisture meter to check
Storage
Off ground, covered top
Allow air circulation on sides
Chimney Cleaning
Annually
Essential for creosote buildup