Irregular Shape Concrete Calculator
Concrete volume for an irregular slab from approximate area and thickness.
Compare Your Options And Get Clear Answers
Concrete volume for an irregular slab from approximate area and thickness.
Irregular Shape Concrete Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Irregular Quick Guide
Typical values for reference.
| Area m2 | mm | Waste % | Volume |
|---|---|---|---|
| 12 | 100 | 10 | 1.32 m3 |
| 5 | 75 | 10 | 0.41 m3 |
| 60 | 150 | 8 | 9.72 m3 |
| 20 | 100 | 10 | 2.20 m3 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Irregular Shape Concrete Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real prices and rules vary, so treat it as a guide.
Volume = area x thickness x (1 + waste).
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.