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Calculate glaze batch weight from unity formula and raw material analysis. Scale recipes to any batch size for consistent studio pottery glazing.
Create kiln firing schedules with ramp rates, hold times, and cone temperatures. Plan bisque and glaze firings for electric and gas pottery kilns.
Calculate clay shrinkage percentage from wet, dry, and fired dimensions. Plan pottery sizes accurately for clay bodies from leather-hard through glaze firing.
Approximate hollow forms as cylinders, truncated cones, or spheres. Subtract inner volume from outer volume to get clay wall volume.
V_cylinder = π × h × (R_outer² − R_inner²)Bisque density is typically 1.8–2.2 g/cm³; vitrified stoneware reaches 2.3–2.5 g/cm³. Use measured density for your clay body and firing temperature.
Weight = volume (cm³) × density (g/cm³)Add estimated volume for solid feet, handles, and attachments. These are often modeled as small cylinders or rectangular prisms with full clay density.
Total weight = body weight + Σ attachment weightsUpdated: July 2026
Bowl 8 in diameter × 3 in tall, 1/4 in wall, density 2.3 g/cm³. Calculator estimates ~850 g (~1.9 lb) — useful for USPS flat-rate vs calculated shipping decisions.
Twenty mugs averaging 350 g each total 7 kg per shelf. Check shelf rating (often 10–15 kg) before stacking a full electric kiln load.
Tall cylinder vase 18 in × 6 in with 3/8 in walls weighs roughly 4.5 kg bisque. Confirms reinforced shelf and two-person lift for unloading.
Wet clay includes water weight. Use bisque or fired density for finished piece estimates — wet clay weighs roughly double the fired result.
Pot bottoms are often 2–3× wall thickness. Add extra volume for the foot ring or flat base or the estimate will understate weight by 10–20%.
Knowing finished piece weight helps with shipping quotes, kiln shelf loading, and structural design. This calculator estimates weight from vessel dimensions, wall thickness, and clay body density at bisque or glaze firing stage.