Get the concrete for a pole base.
⚙️Calculation Parameters
📊Calculated Output
How Pole Base Concrete Calculator Works?
To size a pole base, the Pole Base Concrete Calculator calculates concrete from the base diameter and depth you supply and reports the base weight. The process takes 4 steps.
Enter supplied dimensions
Type the base diameter and depth from the pole maker or engineer.
Subtract the pole
Enter the pole or sleeve size and embedment, if the pole sits inside the concrete.
Calculate volume
The tool finds the net fill in cubic feet (ft³) and cubic yards (yd³).
Read weight and bags
The calculator lists bags and the base weight at 145 lb/ft³ (2,320 kg/m³).
Pole Base Concrete Calculator Formula
The Pole Base Concrete Calculator uses supplied dimensions only.
Base volume
V = π × (D ÷ 24)² × (H ÷ 12) − V_poleV_pole is the embedded pole or sleeve.
Base weight
W = V × 145 lb/ft³Normal-weight concrete.
Metric weight
W (kg) = V (m³) × 2,320Same density in SI units.
Worked example: 25 ft flagpole, 24 in × 54 in base, 4 in sleeve
- V_base = 14.137 ft³; V_sleeve = 0.393 ft³
- V = 13.744 ft³ (0.509 yd³)
- Weight = 1,993 lb (904 kg); 23 bags of 80 lb
Pole Base Concrete Calculator Conversion Table
The pole base conversion table lists typical base sizes for 6 pole types with volume, bags and weight.
| Pole | Base | ft³ | yd³ | 80 lb bags | Weight lb |
|---|---|---|---|---|---|
| Basketball hoop pole | 18 in × 48 in | 7.07 | 0.262 | 12 | 1,025 |
| 20 ft flagpole | 18 in × 42 in | 6.19 | 0.229 | 11 | 897 |
| 25 ft flagpole | 24 in × 54 in | 14.14 | 0.524 | 24 | 2,050 |
| Solar ground-mount post | 12 in × 60 in | 3.93 | 0.145 | 7 | 569 |
| Utility service pole | 24 in × 72 in | 18.85 | 0.698 | 32 | 2,733 |
| Satellite dish mast | 12 in × 36 in | 2.36 | 0.087 | 4 | 342 |
Sizes are typical. Pole manufacturers and utilities specify the base for each product and site.
What is Pole Base Concrete Calculator?
A Pole Base Concrete Calculator is a calculator that turns supplied base dimensions for poles, flagpoles and masts into concrete volume, bags and base weight.
Poles rely on base mass and soil contact to stay upright under wind. Manufacturers list a base size for each pole height and wind zone. The calculator takes those numbers and returns the order, without assuming a size of its own.
A 24 in × 54 in flagpole base with a 4 in sleeve weighs about 1,993 lb (904 kg).
What are the uses of Pole Base Concrete Calculator?
There are 4 main uses of the Pole Base Concrete Calculator.
Flagpoles
Installers pour bases to the flagpole maker sizes.
Basketball hoops
Owners pour in-ground hoop bases.
Solar mounts
Contractors size bases for ground-mount posts.
Masts and antennas
Crews pour bases for dish and antenna masts.
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