See what share of the tube is full.
⚙️Calculation Parameters
📊Calculated Output
How Sonotube Fill Percentage Calculator Works?
To get a fill percentage, the Sonotube Fill Percentage Calculator divides the placed volume by the full tube capacity. The process takes 4 steps.
Enter the tube size
Type the diameter and full length. The calculator finds the full capacity.
Enter placed concrete
Type the fill height, the bags placed or the cubic feet (ft³) placed.
Divide by capacity
The calculator divides placed volume by capacity and multiplies by 100.
Read progress
The tool shows the percent full, the volume left and a progress bar.
Sonotube Fill Percentage Calculator Formula
The Sonotube Fill Percentage Calculator compares 2 volumes.
Capacity
C = π × (D ÷ 24)² × (L ÷ 12)Full volume of the tube.
Fill percentage
P = V_placed ÷ C × 100%Same result as fill height ÷ length.
Volume left
V_left = C × (1 − P ÷ 100)Volume to finish.
Worked example: 16 in × 60 in tube, 10 bags of 80 lb placed
- C = 6.981 ft³
- V_placed = 10 × 0.60 = 6.00 ft³
- P = 6.00 ÷ 6.981 = 85.9% full, with 0.98 ft³ left
Sonotube Fill Percentage Calculator Conversion Table
The fill percentage conversion table shows progress in one 16 in × 60 in (41 cm × 152 cm) tube as the concrete rises.
| Fill height | Placed ft³ | Placed L | Percent full | ft³ left |
|---|---|---|---|---|
| 12 in | 1.40 | 40 | 20% | 5.59 |
| 24 in | 2.79 | 79 | 40% | 4.19 |
| 30 in | 3.49 | 99 | 50% | 3.49 |
| 36 in | 4.19 | 119 | 60% | 2.79 |
| 48 in | 5.59 | 158 | 80% | 1.40 |
| 60 in | 6.98 | 198 | 100% | 0.00 |
In a straight tube the percent full equals fill height divided by length.
What is Sonotube Fill Percentage Calculator?
A Sonotube Fill Percentage Calculator is a progress tool that reports how full a round concrete form is as a percentage of its capacity.
A percentage gives a fast read on large tubes, where the top is hard to see and a flashlight check takes time. Ten bags in a 16 in × 60 in tube put the pour at 86%. The crew knows 2 more bags finish the job.
The tool works for single tubes and for whole projects, where it divides total placed volume by total capacity.
What are the uses of Sonotube Fill Percentage Calculator?
There are 4 main uses of the Sonotube Fill Percentage Calculator.
Pour monitoring
Supervisors track progress during long column pours.
Truck chute timing
Drivers slow the chute near 90% to avoid overflow.
Daily reports
Site leads log percent complete for each pier.
Batch counting
Mixer crews see how many batches remain.
🔗Related Sonotube Calculators
View all 106 subtools →Sonotube Partial Fill Calculator
Find the concrete for a tube you fill part way.
Sonotube Remaining Fill Calculator
See how much is left after part of the pour.
Sonotube Top-Up Calculator
Find the concrete you need to top up a tube.
Available Concrete Fill Height Calculator
See how high your concrete will reach.