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Calcimator

Earth Oven Sizing Calculator

Calculate dome dimensions, door size, thermal mass, heat-up time, and cooking capacity for a cob/clay pizza and bread oven.

Inputs

cm
cm
cm

Results

Interior dome height

60 cm

Door height38 cm
Door width45 cm
Overall outer diameter128 cm
Max 30 cm pizzas6
Max bread loaves22
Thermal mass (cob layer)355 kg
Heat-up time68 min
Recommended diameter for pizza count48 cm
Floor Area (m²)0.64
Dome Surface (m²)1.27
Insul Volume M30.16
How to Use This Calculator
  1. Enter the desired interior dome diameter in centimeters.
  2. Set wall thickness, insulation layer thickness, and the number of pizzas to cook simultaneously.
  3. The calculator returns dome height, door dimensions, outer diameter, maximum pizza capacity, and thermal mass.
  4. Use the heat-up time estimate to plan your firing schedule (typically 1.5–2 hours before cooking).
  5. Adjust diameter to trade between pizza capacity and build materials required.
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