Throat Calculators

The Throat is the opening between the firebox and cook chamber. Enter the area given by the PitCalc and choose a shape that works best for your build.


Throat Calculator for Cylindrical Tanks

Use this calculator to lay out the throat opening on a cylindrical tank in combination with a square shaped firebox.

Cylindrical-Tank-Throat.jpg

PLANETCALC, Throat Calculator for Cylindrical tank

Throat Calculator for Cylindrical tank

Top width of cut-out.
 
Bottom width of cut-out
 
Height of cut-out
 
Calculated Area
 


Trapezoid Shaped Throat Opening for Cylindrical Tanks

Use this calculator to lay out a trapezoidal shaped throat cut-out in combination with a square shaped firebox.

Trapezoid-Throat.jpg

PLANETCALC, Trapezoid-shaped Throat Opening

Trapezoid-shaped Throat Opening

Enter the width of your firebox

Enter the height you want for a grease dam at the bottom of the tank.

Top Length
 
Bottom Length
 
Height of cut-out
 
Throat area of cut-out.
 


Throat Calculator for Overlapping Cylindrical Tanks

Use this calculator to determine the throat cut-out when using two cylindrical tanks of the same or different diameter. The cut-out width will always be the same for both tanks. Enter the tank's diameter and the throat area from the Pit Calculator.

Overlapping-Tanks-Throat.jpg

PLANETCALC, Throat Calculator for Overlapping Cylindrical Tanks

Throat Calculator for Overlapping Cylindrical Tanks

Overall Height of cut-out
 
Cut-out Width
 
Calculated Throat Area
 

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