Pellet Grill Consumption Calculator
Calculate pellet consumption for your pellet grill based on cook temperature, duration, ambient temperature, and grill size.
About this calculator
Burn Rate starts from a base pellet-consumption figure set by Grill Size -- a bigger cook chamber and hopper burn more pellets per hour at the same settings -- and then scales that base up or down for temperature. Cook Temperature raises Burn Rate because a pellet grill fires its auger more often to hold a higher setpoint, roughly doubling consumption between low-and- slow smoking around 225°F and high-heat grilling near 450°F. Ambient Temperature works the other direction below 70°F: colder outside air pulls more heat out of the cook chamber, so the grill compensates by burning pellets faster, roughly 1.5% more per degree below 70°F.
Once Ambient Temperature reaches 70°F or higher, that penalty stops applying entirely -- Burn Rate no longer responds to further warming, since the model only accounts for cold-weather heat loss, not any benefit from hot weather. Pellets Needed simply multiplies Burn Rate by Cook Time, and Bags (20 lb) rounds that up to whole bags since pellets are sold by the bag. Hopper Refills estimates how many times you'd need to top off the hopper during a long cook, based on typical hopper capacity for each Grill Size -- useful for deciding whether an overnight brisket needs a hopper extension or a scheduled refill.
Inputs
Results
Pellets Needed
12.8 lbs
≈ 3 bags of sugar
How to Use This Calculator
- Enter your target cook temperature in °F.
- Set the total cook duration in hours.
- Enter the ambient temperature and select your grill size.
- The calculator shows total pellets needed, number of 20-lb bags, hourly burn rate, hopper refills required, and estimated cost.
- Check hopper capacity against refill count to determine if you need a hopper extension for long cooks.
How the result changes with Cook Time
| Cook Time | Pellets Needed |
|---|---|
| 4 | 6.4 lbs |
| 6 | 9.6 lbs |
| 12 | 19.2 lbs |
| 20 | 32 lbs |
What each input means
- Cook Temperature
- Target grill temperature. Low-and-slow (225-250°F) uses fewer pellets than high-heat grilling.
- Cook Time
- Total expected cook time in hours.
- Ambient Temperature
- Outside air temperature. Cold weather increases pellet burn rate (~1.5% per degree below 70°F).
- Grill Size
- Hopper and cook-chamber size drive the base pellet burn rate before temperature and weather adjustments.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersCook Temperature = 250, Cook Time = 8, Ambient Temperature = 70, Grill Size = 2 = 4 input(s) provided
- Calculate Pellets NeededPellets Needed12.8 = 12.8
- Calculate BagsBags1 = 1
- Calculate Burn RateBurn Rate1.6 = 1.6
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Does raising Ambient Temperature above 70°F reduce Burn Rate further?
No. The cold-weather penalty only applies below 70°F, adding roughly 1.5% to Burn Rate for every degree colder. At 70°F and above, Ambient Temperature has no further effect on pellet consumption in this model -- Burn Rate is driven entirely by Cook Temperature and Grill Size at that point.
How much does Cook Temperature affect pellet usage?
Substantially -- the model roughly doubles Burn Rate between a low-and-slow 225°F smoke and a high-heat 450°F grill session, since holding a higher setpoint means the auger feeds pellets into the firepot more frequently. Long high-heat cooks will burn through noticeably more pellets than the same duration at smoking temperatures.
Does a larger grill need more Hopper Refills than a smaller one?
Essentially no, for the same cook conditions. Base Burn Rate and hopper capacity both scale together with Grill Size -- 1 lb/hr with a 12 lb hopper (small), 1.5 lb/hr with an 18 lb hopper (medium), 2 lb/hr with a 24 lb hopper (large) -- which works out to the same burn-rate-to-capacity ratio for all three, so a bigger hopper empties in roughly the same number of hours as a smaller one at the same temperature and weather settings. Hopper Refills is driven almost entirely by Cook Time, not by which grill size you select.
Are the pellet cost and bag estimates based on a specific brand?
No, Est. Pellet Cost uses a general per-bag price assumption for 20 lb bags, not any specific manufacturer's current pricing, which varies by brand, retailer, and region. Use Bags (20 lb) and Pellets Needed as the more reliable figures, and substitute your own local price for a precise cost estimate.
Related Calculators
The questions that sit next to this one — chosen by subject, including calculators filed under a different category.
Smoker Fuel Calculator
Calculate charcoal and wood chunk amounts needed based on cook time, smoker type, and ambient temperature.
BBQ & SmokingBrisket Cook Time Calculator
Calculate total brisket cook time based on weight, smoker temperature, cook rate, and whether you wrap.
Biomass & BioenergyWood Pellet Production Calculator
Calculate pellet output from raw wood based on moisture content and conversion efficiency.
BBQ & SmokingBBQ Catering Calculator
Calculate raw meat needed for a BBQ catering event based on guest count, proteins, serving size, and yield.
More in Cooking, Food & Beverage.