How Much Does Marble Weigh?
Marble Weight (Direct Answer)
Marble weighs 169 lb/ft³ (2,700 kg/m³). A 3cm marble slab weighs ~17 lbs per square foot.
Slightly lighter than granite (172 lb/ft³)
Marble Weight Calculator
Select a material and enter dimensions to calculate weight
People Also Calculated
Marble weight is calculated using the formula: Weight = Length × Width × Thickness × Density. Marble's density ranges from 157 to 177 pounds per cubic foot (2,520 to 2,840 kg/m³), with 169 lb/ft³ (2,710 kg/m³) being a reliable average for most white and colored marble varieties.
Marble is very similar in weight to granite, which makes sense given that marble is metamorphosed limestone — the mineral recrystallization during metamorphism produces a material with density comparable to granite. For practical estimates, using 169 lb/ft³ for marble and 168 lb/ft³ for granite means the two materials are essentially interchangeable from a weight-planning perspective.
As with any stone calculation, consistency of units is key. Convert all measurements to the same unit system before multiplying. If you measured a marble tile in inches, convert each dimension to feet by dividing by 12, or multiply everything in inches and use 0.0977 lb/in³ as marble's density in pounds per cubic inch.
Calculations verified using ASTM C503 standard density values
Last updated: February 2026