Smoking Time Calculator Formula

Understand the math behind the smoking time calculator. Each variable explained with a worked example.

Use the Smoking Time Calculator

Formulas Used

Estimated Smoking Time

total_hours = round(rate_hr_per_lb * weight_lbs * temp_factor * 10) / 10

Target Internal Temp

target_temp_f = (meat_type == 1) * 203 + (meat_type == 2) * 205 + (meat_type == 3) * 195 + (meat_type == 4) * 165 + (meat_type == 5) * 165

Rest Time After Smoking

rest_minutes = (meat_type == 1) * 60 + (meat_type == 2) * 45 + (meat_type == 3) * 15 + (meat_type == 4) * 20 + (meat_type == 5) * 30

Variables

VariableDescriptionDefault
meat_typeMeat Type1
weight_lbsMeat Weight(lbs)10
smoker_temp_fSmoker Temperature(°F)250
rate_hr_per_lbDerived value= (meat_type == 1) * 1.25 + (meat_type == 2) * 1.5 + (meat_type == 3) * 0.5 + (meat_type == 4) * 0.33 + (meat_type == 5) * 0.5calculated
temp_factorDerived value= 250 / smoker_temp_fcalculated

How It Works

How Smoking Time Is Estimated

Formula

Total Time = Rate (hr/lb) x Weight (lbs) x (250 / Smoker Temp)

Smoking Rates at 250°F

| Meat | Rate | Target Internal | |------|------|----------------| | Brisket | 1-1.5 hr/lb | 200-205°F | | Pork Shoulder | 1.5-2 hr/lb | 203-205°F | | Ribs (rack) | 5-6 hours total | 195-203°F | | Whole Chicken | 3-4 hours total | 165°F | | Turkey | 0.5 hr/lb | 165°F |

The Stall

Large cuts (brisket, pork shoulder) often stall at 150-170°F as moisture evaporates and cools the surface. This can last hours. Wrapping in butcher paper or foil (the Texas crutch) pushes through the stall faster.

Worked Example

Smoke a 10 lb brisket at 250°F.

meat_type = 1weight_lbs = 10smoker_temp_f = 250
  1. 01Rate for brisket = 1.25 hr/lb.
  2. 02Temp factor = 250 / 250 = 1.
  3. 03Total time = 1.25 x 10 x 1 = 12.5 hours.
  4. 04Target internal temperature = 203°F.
  5. 05Rest time after removing from smoker = 60 minutes.
  6. 06Total time including rest = 13.5 hours. Start early!

Ready to run the numbers?

Open Smoking Time Calculator