Make a chart of bags per tube size.
⚙️Calculation Parameters
📊Calculated Output
How Bags per Sonotube Chart Generator Works?
To build a bag chart, the Bags per Sonotube Chart Generator calculates the bag count for every diameter and depth you select and lays the results out in a grid. The process takes 4 steps.
Select diameters
Tick the tube sizes to include, from 4 in to 48 in (10 cm to 122 cm).
Select depths
Pick depth steps, such as 24 in, 36 in, 48 in and 60 in.
Pick a bag size
Choose 40 lb, 50 lb, 60 lb, 80 lb, 90 lb, 20 kg or 25 kg.
Generate the chart
The tool fills every cell with a whole-bag count and lets you print or copy the grid.
Bags per Sonotube Chart Generator Formula
The Bags per Sonotube Chart Generator runs the bag formula once per cell.
Cell value
Bags(D, H) = ⌈π × (D ÷ 24)² × (H ÷ 12) ÷ Y⌉D and H in inches, Y in cubic feet (ft³).
Grid size
Cells = diameters × depths7 × 6 = 42 cells in the sample chart.
Waste option
Bags = ⌈V × (1 + w) ÷ Y⌉Optional margin per cell.
Worked example: the 14 in × 42 in cell for 80 lb bags
- V = 3.1416 × (14 ÷ 24)² × 3.5 = 3.742 ft³
- Bags = ⌈3.742 ÷ 0.60⌉ = ⌈6.24⌉ = 7
- The value goes in row 14 in, column 42 in
Bags per Sonotube Chart Generator Conversion Table
The bags per Sonotube conversion table is a sample chart of 80 lb (36 kg) bags for 7 diameters and 6 depths.
| Diameter | 24 in | 36 in | 42 in | 48 in | 60 in | 72 in |
|---|---|---|---|---|---|---|
| 6 in | 1 | 1 | 2 | 2 | 2 | 2 |
| 8 in | 2 | 2 | 3 | 3 | 3 | 4 |
| 10 in | 2 | 3 | 4 | 4 | 5 | 6 |
| 12 in | 3 | 4 | 5 | 6 | 7 | 8 |
| 14 in | 4 | 6 | 7 | 8 | 9 | 11 |
| 16 in | 5 | 7 | 9 | 10 | 12 | 14 |
| 18 in | 6 | 9 | 11 | 12 | 15 | 18 |
Each cell is rounded up for 1 tube with no waste margin.
What is Bags per Sonotube Chart Generator?
A Bags per Sonotube Chart Generator is a chart tool that builds a grid of bag counts across the tube diameters and depths you select.
A printed grid answers bag questions at the store or on site without a phone. Lumberyards post these charts next to the tube rack, and crews tape them inside a truck door. The generator makes the chart for the exact bag product and the depth steps used in your area.
Changing the bag size rebuilds every cell. A chart for 60 lb bags shows 33% more bags in each cell than the 80 lb chart, before rounding.
What are the uses of Bags per Sonotube Chart Generator?
There are 4 main uses of the Bags per Sonotube Chart Generator.
Store displays
Lumberyards post a bag chart by the tube rack.
Truck reference
Crews keep a laminated chart in the work truck.
Quote speed
Estimators read bag counts without running a calculator.
Training
Supervisors teach new workers bag counts by size.
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