Concrete Calculator
ft
ft
in
%
Add 5 to 10% for spillage and uneven ground.
Concrete needed
1.23 cubic yards
33.33 cubic feet, or 0.944 cubic meters
- Approximate weight2.5 US tons
- 5,000 lb
Or in premixed bags
- 80 lb bags0.6 cu ft each
- 56
- 60 lb bags0.45 cu ft each
- 75
- 40 lb bags0.3 cu ft each
- 112
- 25 kg bagsabout 0.0117 m³ each
- 81
Weight assumes normal concrete at 150 lb/ft³ (2,400 kg/m³). Bag yields are typical label values. Above about 1 cubic yard, ready-mix delivery is usually cheaper and easier than bags.
How it was calculated
- 10 ft × 10 ft × (4 in ÷ 12) × 1 = 33.33 ft³
- 33.33 ft³ ÷ 27 = 1.23 yd³
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