Trade utility
Concrete Volume Calculator
Estimate slab, pad, or pour volume in cubic meters, cubic feet, and liters with a built-in waste allowance.
Interactive calculator
Estimate concrete volume
Use slab dimensions and a waste allowance to estimate how much concrete to order before a pour.
Results
Total volume
3.11 m3
Cubic feet
109.8 ft3
Liters
3,110 L
How to use it
- 01Enter the pour length and width in meters.
- 02Add slab depth in centimeters so thin and thick pours can be modeled without manual unit conversion.
- 03Set a waste percentage to account for uneven base, spillage, and site variability.
Result guide
- Base volume is the raw geometric volume before any contingency is added.
- Total volume is the order-ready estimate after the waste allowance is applied.
- Cubic feet and liters are included for quick supplier and mixing-reference checks.
About this calculator
Concrete ordering mistakes are expensive because under-ordering can delay a pour and over-ordering increases waste. A quick volume estimator helps convert rough dimensions into a more realistic order quantity.
This page keeps the inputs simple for slab-style pours while still showing the result in the units contractors and suppliers commonly switch between.
Frequently asked questions
Why add a waste allowance to concrete volume?
Because site conditions, spillage, and uneven sub-base can cause real usage to exceed the perfect geometric volume.
Can this be used for footings or pads too?
Yes. The same rectangular-volume math works for footings, pads, and other simple straight-sided pours.
Does this estimate reinforcement or cement bags?
No. This page is limited to wet-concrete volume rather than a full material-mix breakdown.
Reviewed by Dr. Elena Rostova, MD, PhD
Medical Doctor & Clinical Nutrition Researcher
Reviews health index calculators, unit converter benchmarks, and mathematical models against WHO guidelines and peer-reviewed research.
Sources: Per WHO guidelines / Peer-reviewed research/Standard estimating formulas for area, volume, and material counts/Common trade calculation references for unit assumptions
Disclaimer: Calculator results are for general reference and educational purposes only per WHO standards. Health indexes and mathematical models are not a substitute for professional medical diagnosis, clinical nutrition, or certified trade advice.
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