See how high your concrete will reach.
⚙️Calculation Parameters
📊Calculated Output
How Available Concrete Fill Height Calculator Works?
To find the fill height, the Available Concrete Fill Height Calculator divides the concrete you have by the volume of 1 inch of tube. The process takes 4 steps.
Enter available concrete
Type the concrete on hand in cubic feet (ft³), liters (L), cubic yards (yd³) or as a count of bags.
Enter the tube diameter
Pick the tube to fill.
Divide by the tube rate
The calculator finds the ft³ per inch of the tube and divides the available volume by that rate.
Read the height
The result shows inches (in), feet (ft) and centimeters (cm) of fill, and compares the result with your target depth.
Available Concrete Fill Height Calculator Formula
The Available Concrete Fill Height Calculator solves the cylinder formula for height.
Fill height
h (in) = V (ft³) ÷ (π × (D ÷ 24)²) × 12D in inches.
From bags
V = bags × yield80 lb = 0.60 ft³, 60 lb = 0.45 ft³.
Shortfall
Gap = h_target − hPositive gap means more concrete is needed.
Worked example: 4 bags of 80 lb mix in a 12 in tube
- V = 4 × 0.60 = 2.40 ft³
- h = 2.40 ÷ 0.7854 × 12 = 36.7 in (93 cm)
- Target 48 in: gap = 11.3 in, or 2 more bags
Available Concrete Fill Height Calculator Conversion Table
The available fill height conversion table shows how high 1, 2, 4 and 6 bags of 80 lb (36 kg) concrete rise in 5 tube sizes.
| Tube | 1 bag | 2 bags | 4 bags | 6 bags |
|---|---|---|---|---|
| 8 in | 20.6 in | 41.3 in | 82.5 in | 123.8 in |
| 10 in | 13.2 in | 26.4 in | 52.8 in | 79.2 in |
| 12 in | 9.2 in | 18.3 in | 36.7 in | 55.0 in |
| 16 in | 5.2 in | 10.3 in | 20.6 in | 30.9 in |
| 18 in | 4.1 in | 8.1 in | 16.3 in | 24.4 in |
Each 80 lb bag yields 0.60 ft³ (17 L).
What is Available Concrete Fill Height Calculator?
An Available Concrete Fill Height Calculator is a reverse tool that shows how deep a known amount of concrete fills a round tube.
The calculator starts from what you have, not from what you need. Four bags in the garage fill 36.7 in of a 12 in tube. Leftover concrete in a truck chute fills a set height in a spare form. The answer tells you whether the concrete reaches the target depth before you start.
The tool works for every bag size and for loose volumes left in a mixer or truck.
What are the uses of Available Concrete Fill Height Calculator?
There are 4 main uses of the Available Concrete Fill Height Calculator.
Leftover bags
Owners see how deep the bags on hand fill a new post hole.
Truck leftovers
Crews find a use for the last 0.25 yd³ in the drum.
Shallow footings
Builders check whether a bag count reaches the required depth.
Batch planning
Mixer crews mark the rise of each batch on the form.
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