Granite Weight Calculator

A standard kitchen countertop (25 sq ft at 1.25 inches thick) weighs approximately 440 pounds. Weight varies based on thickness and granite type, with most residential countertops ranging from 300-600 pounds.

Standard granite has a density of approximately 168 lb/ft³ (2.7 g/cm³). Black granite varieties can be slightly denser at 172 lb/ft³, while lighter granites like white or beige typically measure around 165 lb/ft³.

Most residential granite countertops are either 2 cm (3/4 inch) or 3 cm (1.25 inches) thick. The 3 cm thickness is more popular because it doesn't require plywood support and provides a more substantial appearance.

Standard kitchen cabinets can support granite when properly installed with support brackets or corbels spaced every 24 inches. Overhangs greater than 10 inches typically require additional support like steel rods or brackets.

Calculate volume (length × width × thickness in feet), then multiply by 168 lb/ft³. Add 15-20% for packing materials and crating when estimating shipping costs, as granite must be carefully packaged to prevent cracking.