Firewood Calculator: How Much Firewood Do You Need?

A cord is a precisely defined unit: 128 cubic feet of tightly stacked wood. In physical terms, that's a pile 4 feet wide, 4 feet tall, and 8 feet long — with pieces stacked neatly, not thrown loosely. It is the legal standard unit of firewood measurement in most U.S. states, including Colorado.

These terms get used interchangeably in the market, which creates real confusion — and sometimes gets buyers significantly less wood than they paid for. Knowing the difference before you order protects you.

Most firewood is sold split to a standard length — 16 inches is by far the most common. But 12", 18", and 24" are all normal, and the length determines both how many pieces are in a cord and whether the wood actually fits your stove or fireplace. Measure your firebox before ordering.

A full cord of firewood contains approximately 600 to 700 split pieces at the standard 16-inch log length. The exact count varies by how the wood is split and the log length — shorter pieces mean more pieces per cord; longer pieces mean fewer.

How many cubic feet are in a cord of wood?

A full cord of wood is exactly 128 cubic feet of stacked wood — measured as a 4 × 4 × 8 foot pile. However, that 128 cubic feet includes airspace between pieces. The actual solid wood volume is roughly 80 cubic feet, with the remaining 48 cubic feet being air. This is why cord density matters: tightly stacked, straight-split pieces deliver more actual wood per cord than loosely thrown rounds.

How many face cords are in a full cord?

A full cord contains exactly three face cords (also called ricks) when the logs are 16 inches long — the standard length. If the logs are 12 inches, you'd need four face cords to equal a full cord. If they're 24 inches, you'd need two. This is why the word "face cord" without a log length specified is meaningless as a measurement.

How many ricks are in a cord of firewood?

At the standard 16-inch log length, three ricks equal one full cord. A rick — the same thing as a face cord — is a stack 4 feet high and 8 feet long, but only as deep as the log length. Because "rick" is an informal regional term with no legal definition, always confirm the log length when someone quotes you a price per rick.

A cord of properly seasoned firewood weighs approximately 2,000 to 2,400 pounds for the softwood species common to Colorado mountain properties — about one to one-and-a-quarter tons. Green (freshly cut) wood is significantly heavier because it still contains water, often by 50 to 100 percent.

How much does a face cord (rick) of wood weigh?

A face cord weighs roughly one-third of a full cord — approximately 670 to 800 pounds of seasoned spruce or pine at 16-inch length. A face cord of mixed hardwood at 16 inches would run around 1,250 to 1,300 pounds seasoned. Green face cords are considerably heavier and much harder to move and store.

Why cord weight matters for delivery and storage

Knowing the weight helps you plan practically. A full cord of seasoned ponderosa pine — about 2,300 pounds — needs a load-rated delivery vehicle and a stacking surface that can handle it. If you have driveway weight restrictions, a gravel pad, or a hillside property, discuss it when you order. At Timberline, we've delivered to properties throughout South Fork and Creede and can advise on access before we load the truck.

Weight is also an indicator of seasoning. Wet wood is noticeably heavier than dry wood of the same species. If your delivered cord feels abnormally heavy, check the moisture content before burning. All Timberline cords are verified under 20% moisture before delivery — which is why our wood burns cleanly and why your stove doesn't glaze with creosote.

Heating a house with wood requires 2 to 6 cords per winter for most homes. That range is wide because four variables drive the number: your home's square footage, how well it holds heat, what kind of stove you have, and how long your heating season runs. At South Fork's elevation — roughly 8,200 feet — you're dealing with a genuine mountain winter that demands accurate planning.

Home size and insulation quality

The bigger and draftier your home, the more BTUs you need to keep it warm. A well-insulated modern build retains heat between fires; an older cabin with single-pane windows loses it almost as fast as you produce it. The table below shows estimated cord ranges for Colorado mountain homes on a 5-month heating season using an EPA-certified wood stove.

Heating season length in Colorado

South Fork and Creede sit between 8,000 and 8,200 feet elevation. First frost typically arrives in late September; the last frost is usually in late May. A primary residence that heats with wood is looking at a genuine 7-month heating season — October through April. Seasonal cabins and vacation rentals typically see 3 to 5 active months depending on their guest calendar and whether the property is occupied in spring.

Your heating appliance is the single most impactful variable in the entire calculation — more than home size in many cases. A modern EPA-certified wood stove converts 75 to 80 percent of a cord's BTUs into usable room heat. An open traditional fireplace converts just 10 to 15 percent. That gap means an open fireplace burns through five to six times more wood than an efficient stove for the same amount of heat output.

BTU (British Thermal Unit) measures heat energy. More BTU per cord means more heat from less wood. All values below assume properly seasoned firewood at under 20% moisture content — wet wood burns at a fraction of its rated output regardless of species.

For the full firewood BTU comparison and moisture content guide, see our Firewood BTU Guide for Colorado Mountain Wood.

A standard firewood bundle — approximately 0.75 cubic feet, typically 4 to 6 split pieces — burns for 1 to 2 hours in a campfire or fire pit under normal conditions. In a wood stove with controlled airflow, a full load of dense split wood can hold 4 to 8 hours.

South Fork averages roughly 10,000 heating degree days annually — a measure of how cold a location runs over a full year. For comparison, Denver averages about 5,800 HDD, and Minneapolis — considered one of the colder major cities in the country — averages around 8,500 HDD. A property in the South Fork and Creede area is operating in one of the more demanding heating climates in the continental United States. Budget firewood on the higher end of any estimate range, not the low end. Properties at 9,000+ feet — Creede sits at 8,852 feet — should add an additional half to full cord over lower-elevation estimates.

Spruce beetle has killed more than 617,000 acres of forest across the Rio Grande National Forest since 1996, and Douglas-fir beetle activity surged in 2024 to its highest level in a decade, concentrated right here between South Fork and Creede. That standing dead timber is a significant wildfire hazard — and once harvested and properly seasoned, it's genuinely good firewood. The firewood Timberline delivers is locally sourced beetle-kill from the San Luis Valley — dead timber that would otherwise stand in the forest as wildfire fuel. Buying local, dead-standing wood keeps transport short and follows buy-it-where-you-burn-it guidance that helps prevent the spread of invasive forest pests.

Order before October. Demand from South Fork, Creede, and Pagosa Springs properties spikes the moment the first cold front arrives in late September, and it doesn't ease until March. By mid-October, delivery windows extend 2 to 3 weeks out. By November, individual cord orders are often filled against remaining inventory with no guaranteed timing.

For vacation rental operators and property owners who need reliable supply through the season: our subscription model locks in scheduled deliveries in October, January, and March, with subscription customers receiving priority scheduling over single-cord orders. You don't run out mid-season. Your guests don't complain about an empty woodpile.