Concrete Calculator
Choose a shape, enter its dimensions and see the concrete volume, weight and number of bags needed.
The Concrete Calculator estimates the volume and weight of concrete necessary to cover a given area. Purchasing slightly more concrete than the estimated result can reduce the probability of having insufficient concrete.
Slabs, Square Footings, or Walls
| Metric | Value |
|---|---|
| Concrete Volume | 0.600 m³ |
| Concrete Weight | 1,440 kg |
| Weight (tonnes) | 1.44 t |
| Bags Needed (25 kg) | 51 |
A slab 3 m × 2 m × 10 cm needs 0.6 m³, about 1,440 kg of concrete.
Hole, Column, or Round Footings
| Metric | Value |
|---|---|
| Concrete Volume | 0.170 m³ |
| Concrete Weight | 407 kg |
| Weight (tonnes) | 0.41 t |
| Bags Needed (25 kg) | 15 |
A slab 3 m × 2 m × 10 cm needs 0.6 m³, about 1,440 kg of concrete.
Circular Slab or Tube
| Metric | Value |
|---|---|
| Concrete Volume | 0.028 m³ |
| Concrete Weight | 68 kg |
| Weight (tonnes) | 0.07 t |
| Bags Needed (25 kg) | 3 |
A slab 3 m × 2 m × 10 cm needs 0.6 m³, about 1,440 kg of concrete.
Curb and Gutter Barrier
| Metric | Value |
|---|---|
| Concrete Volume | 0.675 m³ |
| Concrete Weight | 1,620 kg |
| Weight (tonnes) | 1.62 t |
| Bags Needed (25 kg) | 57 |
A slab 3 m × 2 m × 10 cm needs 0.6 m³, about 1,440 kg of concrete.
Stairs
| Metric | Value |
|---|---|
| Concrete Volume | 0.352 m³ |
| Concrete Weight | 844 kg |
| Weight (tonnes) | 0.84 t |
| Bags Needed (25 kg) | 30 |
A slab 3 m × 2 m × 10 cm needs 0.6 m³, about 1,440 kg of concrete.
Calculate concrete volume for slabs, footings, and columns — for construction, DIY projects, and contractor estimates.
Formula
Volume = length × width × depth. Convert to cubic yards by dividing cubic feet by 27.
Reference Values
- •1 cubic yard = 27 cubic feet
- •1 cubic meter = 35.31 cubic feet
- •Typical slab depth: 4-6 inches
Related tools
FAQ
Common questions about Concrete Calculator
How we calculate this
We use the standard published formula for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it within a few days. See how we check our calculators.
DIY disclaimer
Estimates only. Buy a little extra, measure your actual space, and check product labels and local building rules.