How much does concrete weigh?
Enter the length, width and thickness of your slab or pour. You'll get the weight in pounds, kilograms and tonnes — instantly. Choose normal, lightweight or heavyweight concrete.
2kg
0.00 tonnes · 0.001 m³
Normal weight concrete: 2400 kg/m³ (ASTM C138 typical value)
Common questions
- How much does concrete weigh?
- Normal-weight concrete weighs about 150 lb per cubic foot (2,400 kg/m³). A 10 × 10 ft slab poured 4 inches thick is roughly 33 cubic feet, which comes out to about 5,000 lb (2,268 kg). Use the calculator above to get the exact figure for your pour.
- How much does a yard of concrete weigh?
- One cubic yard of normal-weight concrete weighs about 4,050 lb (1,837 kg) — roughly 2 short tons. A cubic yard is 27 cubic feet, so 27 × 150 lb/ft³ = 4,050 lb.
- How much does concrete weigh per square foot?
- It depends on thickness. A 4-inch (100 mm) slab weighs 50 lb/ft² (240 kg/m²); a 6-inch (150 mm) slab weighs 75 lb/ft² (360 kg/m²). Multiply by the slab area to get total weight.
- How much does a cubic foot of concrete weigh?
- Normal-weight concrete: about 150 lb/ft³ (2,400 kg/m³). Lightweight concrete (used in structural decks and blocks): about 110 lb/ft³ (1,760 kg/m³). Heavyweight concrete (radiation shielding): about 200 lb/ft³ (3,200 kg/m³).
- How much does a concrete slab weigh?
- A 10 × 10 ft slab at 4 in thick weighs about 5,000 lb (2.5 tons). A driveway 24 × 24 ft at 6 in thick weighs about 43,200 lb (21.6 tons). Enter your slab dimensions above for the exact weight.
Want the full walk-through? Read the concrete weight guide →
Reference & education only. Not professional, engineering, or code-compliance advice. Estimates are based on published model codes; local amendments and your Authority Having Jurisdiction (AHJ) govern. Always verify against the current adopted code and a licensed professional before doing work.
Last reviewed 2026-08.