Post-hole concrete calculator
Calculate concrete around round posts in round holes.
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Your measurements
Enter your project values. Your estimate updates as you type.
View your estimateExample values are a starting point. Check product yields and specifications before ordering.
YOUR ESTIMATE
Concrete required
0.332m³
Net concrete volume0.302 m³
Concrete per hole0.038 m³
Calculated from your measurements.
How it's calculated
Concrete = π × (hole diameter² − post diameter²) ÷ 4 × depth × quantity. Apply waste.
Calculations use consistent units for your selected measurements. The waste allowance is applied once to the measured requirement. Whole purchase quantities are rounded up.
What this estimate includes
The post is assumed to extend through the full filled depth. Square posts require a different volume deduction.
QUIKRETE product yieldsQuantity and arithmetic estimates only. Use project specifications for installation and design requirements.
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