Every smoker burns fuel differently. A kamado cooker sips charcoal at under a pound per hour, while an offset smoker can devour 2.5 pounds per hour. Running out of charcoal mid-cook is one of the most frustrating pitmaster experiences, especially on an overnight brisket. Our fuel calculator estimates your charcoal, pellet, or wood needs based on your specific smoker type, planned cook duration, and weather conditions. Enter your setup and get an estimate before you light the fire, not after you run out at 3 AM with a half-cooked brisket in the smoker.
How It Works
The calculator uses baseline burn rates per smoker type at 225F in calm, mild weather. A Weber Smokey Mountain burns approximately 1.5 lbs of charcoal per hour. A Big Green Egg uses about 1 lb per hour due to its excellent ceramic insulation. An offset smoker burns through 2.5 lbs per hour because of its larger firebox and thinner steel walls. A pellet grill consumes about 1.5 lbs of pellets per hour. A kettle grill uses roughly 2 lbs per hour when set up for indirect smoking. These rates are multiplied by cook duration and adjusted for weather: cold conditions add 25%, windy conditions add 25%, and both together add 50%.
When to Use This Calculator
Use this before every long cook to make sure you have enough fuel on hand. It is especially valuable for overnight cooks where running to the store at 2 AM is not an option. Also useful when cooking in cold or windy weather, which dramatically increases fuel consumption. Pair with the smoking time calculator for any cut to estimate both cook duration and fuel needs in one planning session.
Frequently Asked Questions
How much charcoal per hour of smoking?
Charcoal consumption varies significantly by smoker type. A Weber Smokey Mountain burns about 1.5 lbs per hour at 225F. A Big Green Egg, thanks to ceramic insulation, uses only about 1 lb per hour. An offset smoker can burn through 2.5 lbs per hour. A kettle grill set up for indirect smoking uses about 2 lbs per hour. These are averages at 225F in calm, mild weather.
Lump charcoal vs briquettes for smoking?
Lump charcoal burns hotter and faster, produces less ash, and imparts a cleaner flavor. Briquettes burn more consistently and longer per piece, making temperature control easier for beginners. For long smokes (8+ hours), many pitmasters prefer briquettes for their predictability. For shorter cooks or kamado-style cookers, lump charcoal is ideal. You can also mix both: a base of briquettes for consistency with lump added for higher heat.
Does cold weather affect charcoal consumption?
Yes, significantly. Cold and windy conditions can increase charcoal consumption by 25-50%. The smoker loses heat faster through its walls, and wind disrupts the airflow that controls temperature. In freezing temperatures, you may use twice as much charcoal as on a calm summer day. Our calculator includes a cold weather adjustment. Consider using a wind break and opening the smoker less frequently in cold weather.
What is the Minion method?
The Minion method is a technique for long, low-temperature cooks on charcoal smokers. Fill the charcoal chamber with unlit briquettes, then place a small amount of fully lit coals on top. The lit coals slowly ignite the unlit ones over many hours, maintaining a steady temperature without needing to add fuel. This is the standard technique for Weber Smokey Mountain cooks of 12+ hours.
How much wood do I need for smoke flavor?
For a typical cook, plan on 4-6 fist-sized wood chunks or 2-3 cups of wood chips. Chunks are preferred because they smolder longer and produce cleaner smoke. Place chunks directly on the hot coals. Chips can be placed in a foil pouch with holes poked in it. The heaviest smoke absorption happens in the first 2-3 hours of the cook, so front-load your wood additions early.
