Concrete Calculator & Estimator: Pour With Precision
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Slabs, Square Footings, or Walls Concrete Calculator
Calculate concrete for rectangular structures such as slabs, footings, and walls. These structures are common in foundations, floors, and barriers.
Measurement Units
Number of identical items
Standard units for rectangular slabs: Length & Width in feet, Thickness in inches
Concrete Grade
C25 Grade: Mix ratio 1:1.5:3 with water-cement ratio 0.50-0.55. General purpose concrete for residential foundations and light structural work. Strength: 25 MPa.
Mix Ratio: 1:1:2
Water-Cement Ratio: 0.45
Strength: 25 MPa
Cement Content: 556-590 lb/yd³
Wastage Allowance (10%)
0%5%10%15%20%
Cost Estimation
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Calculation Results
Volume Required
Total concrete volume needed with imperial units
1.09
yd³ (cubic yard)
29.33 ft³
Including 10% wastage allowance
Materials Needed:
Cement
501.33 lb
9 × 60 lb bags or 7 × 80 lb bags
Sand
960 lb
0.30 yd³
Gravel
1680 lb
0.59 yd³
Water
32 gal
0.16 yd³
Estimated Cost:
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